{"id":2169,"date":"2012-02-06T23:15:51","date_gmt":"2012-02-06T15:15:51","guid":{"rendered":"http:\/\/www.zhangxinxu.com\/wordpress\/?p=2169"},"modified":"2018-01-02T01:14:57","modified_gmt":"2018-01-01T17:14:57","slug":"html5-placeholder%e4%bd%bf%e7%94%a8%e7%bb%8f%e9%aa%8c%e5%88%86%e4%ba%ab%e5%8f%8a%e6%8b%93%e5%b1%95","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2012\/02\/html5-placeholder%e4%bd%bf%e7%94%a8%e7%bb%8f%e9%aa%8c%e5%88%86%e4%ba%ab%e5%8f%8a%e6%8b%93%e5%b1%95\/","title":{"rendered":"HTML5 placeholder\u5b9e\u9645\u5e94\u7528\u7ecf\u9a8c\u5206\u4eab\u53ca\u62d3\u5c55"},"content":{"rendered":"

by zhangxinxu<\/a> from http:\/\/www.zhangxinxu.com<\/a>
\n\u672c\u6587\u5730\u5740\uff1ahttp:\/\/www.zhangxinxu.com\/wordpress\/?p=2169<\/a><\/p>\n

\u4e00\u3001HTML5 placeholder\u76f8\u5173\u7684\u5f15\u8a00<\/h3>\n

placeholder<\/code>\u5728\u82f1\u6c49\u8bcd\u5178\u4e2d\u89e3\u91ca\u6210\u4e86\u201c\u5360\u4f4d\u7b26\u201d\u3002\u8981\u7406\u89e3\u5e76\u4e0d\u96be\uff0c\u8bf7\u770b\u6b64\u573a\u666f\uff1a
\n\"\u72d7\u72d7\u6811\u4e0b\u6492\u5c3f\u5c3f\"<\/p>\n

\u201c\u54a6\uff1f\u201d\u60a8\u53ef\u80fd\u4f1a\u7591\u95ee\uff0c\u201c\u8fd9\u4e0d\u662f\u5c31\u662f\u72d7\u72d7\u6811\u4e0b\u6492\u5c3f\u5c3f\u201d\u3002\u786e\u5b9e\uff0c\u8be5\u573a\u666f\u53ef\u4ee5\u8f83\u597d\u7684\u8be0\u91caplaceholder<\/code>\u201c\u5360\u4f4d\u7b26\u201d\u4e4b\u610f\u3002\u6211\u4eec\u4e0d\u59a8\u5c06placeholder<\/code>\u6765\u4e2a\u4e34\u65f6\u62c6\u5206\uff1aplace + hold + er.<\/p>\n

\u5bf9\u4e8e\u4e0a\u9762\u573a\u666f\u5c31\u6709\uff1aplace\u6307\u6811\u53ca\u9644\u8fd1\u533a\u57df\uff1bhold\u8868\u793a\u9547\u4f4f\u4e86\u5176\u4ed6\u72d7\u72d7\u2014\u2014\u6b64\u5904\u4e3a\u6d12\u5bb6\u7684\u5730\u76d8\uff1b\u800cer\u5219\u5c06\u91cd\u70b9\u8f6c\u5230\u4e86\u5c3f\u4e0a\u3002\u4e8e\u662f\uff0c\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cplaceholder<\/code>\u6307\u7684\u5c31\u662f\uff1a\u201c\u8db3\u4ee5\u9547\u4f4f\u8fd9\u5757\u533a\u57df\u7684\u72d7\u72d7\u7684\u5c3f\u201d\uff0c\u5373\u201c\u5360\u636e\u6811\u6728\u7684\u5c3f\u201d\uff0c\u7b80\u79f0\u4e3a\u201c\u5360\u6811\u5c3f\u201d\uff1b\u81f3\u6b64\uff0c\u201c\u5360\u4f4d\u7b26\u201d\u4e4b\u610f\u5c31\u5f88\u597d\u7406\u89e3\u4e86\uff0c\u4e5f\u5c31\u662f\u201c\u5360\u636e\u4f4d\u7f6e\u7684\u5b57\u7b26\u201d\u3002\u65e0\u8bba\u662f\u4f20\u7edf\u8f6f\u4ef6\u6216\u662fweb\u5e94\u7528\u4e2d\uff0c\u8fd9\u4e2a\u73a9\u610f\u90fd\u662f\u76f8\u5f53\u5e38\u89c1\u7684\uff0c\u77aa\u5927\u773c\u775b\u968f\u4fbf\u7784\u7784\uff0c\u5f97\uff0c\u7acb\u9a6c\u6709\u4e86~~<\/p>\n

\u5982\u6211FireFox\u6d4f\u89c8\u5668\u53f3\u4e0a\u65b9\u7684\u641c\u7d22\u5360\u4f4d\u7b26\uff1a
\n\"FireFox\u6d4f\u89c8\u5668\u4e0a\u81ea\u5e26\u641c\u7d22\u7684\u5360\u4f4d\u7b26\u6548\u679c<\/p>\n

\u6216\u662f\u5f53\u524d\u6211\u5199\u8fd9\u7bc7\u6587\u7ae0\u7684\u540e\u53f0\u9875\u9762\u7684\u53f3\u4fa7\u52a0\u6807\u7b7e\u7684\u5c0f\u6846\u6846\uff1a
\n\"placeholder\u4f7f\u7528\u793a\u610f\u622a\u56fe<\/p>\n

\u5728\u53ef\u8f93\u5165\u63a7\u4ef6\u4e2d\uff0c\u201c\u5360\u4f4d\u7b26\u201d\u4e00\u822c\u4f5c\u63d0\u793a\u7528\uff0c\u7b80\u6d01\u660e\u4e86\uff0c\u7a7a\u95f4\u5229\u7528\u7387\u9ad8\u3002\u7136\u800c\uff0c\u5728XHTML\u7684\u65f6\u4ee3\uff0c\u63a7\u4ef6\u5143\u7d20\u5e76\u6ca1\u6709placeholder<\/code>\u8fd9\u4e00\u5c5e\u6027\uff0c\u56e0\u6b64\uff0c\u6211\u4eec\u7684\u505a\u6cd5\u90fd\u662f\u901a\u8fc7JavaScript\u505a\u6a21\u62df\uff0c\u4f8b\u5982\u4e0b\u9762\u8fd9\u4e2a\u672a\u5206\u79bb\u7684\u4e0d\u63a8\u8350\u7684\u5199\u6cd5\uff1a<\/p>\n

\n
<input value=\"@zhangxinxu\" onfocus=\"javascript:if(this.value='@zhangxinxu'){this.value='';}\" onblur=\"javascript:if(!this.value){this.value='@zhangxinxu';}\" \/><\/pre>\n<\/div>\n
\u6548\u679c\u5c31\u662f\u4e0b\u9762\u8fd9\u4e2a\uff08\u5982\u679c\u770b\u4e0d\u5230\u6548\u679c\uff0c\u8bf7\u70b9\u51fb\u8fd9\u91cc<\/a>\u67e5\u770b\u539f\u6587\uff09<\/span>\uff1a
\n<\/p>\n
\u65f6\u4ee3\u603b\u662f\u4e0d\u65ad\u53d8\u5316\u7684\uff0c\u5728HTML5\u4e2d\uff0c\u60f3input<\/code>\u6587\u672c\u6846\u6216\u662ftextarea<\/code>\u6587\u672c\u57df\u5df2\u7ecf\u6709\u4e86\u5360\u4f4d\u7b26\u529f\u80fd\uff0c\u5176\u5c5e\u6027\u540d\u5c31\u662fplaceholder<\/code>\u3002<\/p>\n
\u6700\u57fa\u672c\u4f8b\u5b50\uff1a<\/p>\n
\n
<input id=\"email\" type=\"email\" placeholder=\"zhangxinxu@zhangxinxu.com\" size=\"26\" \/> <\/pre>\n<\/div>\n
\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1aHTML5\u5360\u4f4d\u7b26\u57fa\u672c\u5b9e\u4f8bdemo<\/a><\/p>\n
\u76ee\u524d\uff0c\u73b0\u4ee3\u6d4f\u89c8\u5668\u5747\u65e9\u5df2\u652f\u6301placeholder<\/code>\u5360\u4f4d\u7b26\u5c5e\u6027\u3002\u597d\u5b9a\u897f\u4e0d\u7528\u767d\u4e0d\u7528\u554a\uff0c\u56e0\u6b64\uff0c\u5728\u524d\u5e74\uff0c\u6211\u5c31\u5c06HTML5\u7684placeholder\u5360\u4f4d\u7b26\u5c5e\u6027\u5e94\u7528\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\u4e86\u3002\u5728\u8fd9\u4e00\u5e74\u591a\u7684\u5e94\u7528\u4e2d\uff0c\u8fd8\u662f\u6709\u4e9b\u78d5\u78d5\u78b0\u78b0\uff0c\u5728\u6b64\u4f5c\u4e3a\u7ecf\u9a8c\u5206\u4eab\u4e0b\u3002\u4e00\u6765\u52a0\u6df1\u5927\u5bb6\u4e0eplaceholder<\/code>\u7684\u8ba4\u8bc6\uff0c\u4e8c\u662f\u5e0c\u671b\u5927\u5bb6\u53ef\u4ee5\u79ef\u6781\u5927\u80c6\u5e94\u7528\u4e00\u4e9bHTML5\u7684\u65b0\u7279\u6027\u3002<\/p>\n
\u7136\u540e\uff0c\u8fd8\u8981\u5bf9\u5360\u4f4d\u7b26\u7684\u4e00\u4e9b\u5e94\u7528\u505a\u6269\u5c55\u3002\u672c\u6587\u5185\u5bb9\u591a\u800c\u6742\uff0c\u4e0d\u8fc7\u90fd\u662f\u4e9b\u503c\u5f97\u82b1\u65f6\u95f4\u5480\u56bc\u7684\u4e1c\u897f\u3002<\/p>\n
\u4e8c\u3001placeholder\u7684\u6d4f\u89c8\u5668\u8868\u73b0\u5dee\u5f02<\/h3>\n
\u8fd9\u91cc\u7684\u6d4f\u89c8\u5668\u6307\uff1aFireFox, Opera, Chrome. IE\u6d4f\u89c8\u5668\u56e0\u4e3a\u6ca1\u6709\u4e70\u5230\u56de\u7a0b\u7684\u706b\u8f66\u7968\u8fd8\u5728\u5bb6\u91cc\u5934\u8fc7\u5e74\u5462\uff01<\/p>\n
\u5728\u5360\u4f4d\u7b26\u57fa\u672cdemo<\/a>\u4e2d\uff0c\u5076\u4eec\u662f\u770b\u4e0d\u5230\u4ec0\u4e48\u672c\u8d28\u5dee\u5f02\u3002\u90fd\u662f\u9ed8\u8ba4\u6de1\u7070\u8272\uff0c\u586b\u5199\u7684\u5b57\u7b26\u90fd\u662f\u9ed1\u8272\u3002\u90a3\u5dee\u5f02\u5728\u4f55\u5904\u5462\uff1f<\/p>\n
\u6211\u4eec\u505a\u70b9\u5c0f\u52a8\u4f5c\uff0c\u5c31\u53ef\u4ee5\u770b\u51fa\u5dee\u5f02\u6765\u4e86\uff1a<\/p>\n
\n
input { color: #333; }<\/pre>\n<\/div>\n
\u6dfb\u52a0\u7c7b\u4f3c\u4e0a\u9762\u7684\u4e00\u6bb5CSS\u4ee3\u7801\uff0c\u7ed3\u679c\u5c31\u6709\u5dee\u522b\u4e86~~<\/p>\n
\u5728FireFox\u6d4f\u89c8\u5668\u4e0b\uff0c\u5360\u4f4d\u7684\u9ed8\u8ba4\u5b57\u7b26\u989c\u8272\u53d8\u6210#333\u54af\uff1b\u4f46\u662f\uff0cChrome\u6d4f\u89c8\u5668\u4ee5\u53caOpera\u6d4f\u89c8\u5668\u90fd\u662f\u575a\u5b9a\u7684\u6de1\u7070\u8272\u3002\u5177\u4f53\u53c2\u89c1\u4e0b\u9762\u622a\u56fe\u4eec\uff1a
\n\"placeholder\u6d4f\u89c8\u5668\u5dee\u5f02\u622a\u56fe\" \"placeholder\u6d4f\u89c8\u5668\u5dee\u5f02\u622a\u56fe\" \"placeholder\u6d4f\u89c8\u5668\u5dee\u5f02\u622a\u56fe\"<\/p>\n
\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a\u51fa\u73b0\u6d4f\u89c8\u5668\u517c\u5bb9\u6027\u5dee\u5f02\u7684demo<\/a><\/p>\n
\u539f\u56e0\uff1f<\/strong>
\n\u4e3a\u4f55FireFox\u6d4f\u89c8\u5668\u4e0b\u4f1a\u6709\u5982\u6b64\u8868\u73b0\uff0c\u6211\u89c9\u5f97\u5e94\u8be5\u662fFireFox\u6d4f\u89c8\u5668\u54ea\u91cc\u641e\u9519\u4e86\u3002input<\/code>\u9009\u62e9\u5668\u8986\u76d6\u4e86\u7cfb\u7edf\u8868\u5355\u6837\u5f0fforms.css<\/code>\u4e2d\u7684\u5982\u4e0bCSS\uff1a<\/p>\n
\n
input:-moz-placeholder, textarea:-moz-placeholder {\n    color: graytext;\n}<\/pre>\n<\/div>\n
\u5982\u4e0b\u5c0fBug\u4e0b\u7aa5\u89c6\u7684\u622a\u56fe\uff1a
\n\"FireFox\u6d4f\u89c8\u5668\u4e0b\u9ed8\u8ba4placeholder\u989c\u8272\u88abreset\"<\/p>\n
\u800c\u5b9e\u9645\u4e0a\uff0c\u6839\u636e\u6211\u7684\u7406\u89e3\uff0c\u6807\u7b7e+\u4f2a\u7c7b\u9009\u62e9\u5668\u7684\u4f18\u5148\u7ea7\u8981\u9ad8\u4e8e\u5355\u7eaf\u7684\u6807\u7b7e\u9009\u62e9\u5668\u3002\u6216\u8bb8\u662f\u5bf9\u4e8e\u7cfb\u7edfCSS\uff0cFireFox\u6d4f\u89c8\u5668\u8d70\u4e86\u81ea\u5df1\u7684\u72ec\u6728\u6865\u5427\uff1b\u800cChrome\u548cOpera\u6d4f\u89c8\u5668\u5219\u662f\u8d70\u7684\u9633\u5173\u9053\uff0c\u5373\u4f7f\u5982\u4e0b\u8bbe\u7f6e\uff1a<\/p>\n
\n
input { color: #333!important; }<\/pre>\n<\/div>\n
\u6587\u672c\u6846\u4f9d\u7136\u662fhold\u4f4f\u7684\u6de1\u7070\u8272\u6587\u5b57\u6548\u679c\u3002<\/p>\n
\u5b9e\u9645\u95ee\u9898<\/strong>
\n\u8981\u60f3FireFox\u6d4f\u89c8\u5668\u4e0bplaceholder\u6587\u5b57\u9ed8\u8ba4\u7070\u8272\u6587\u672c\u663e\u793a\uff0c\u9700\u8981\u4e0d\u5bf9input<\/code>\/textarea<\/code>\u91cd\u7f6e\u6587\u5b57\u989c\u8272\u3002However, input<\/code>\u7b49\u63a7\u4ef6\u9ed8\u8ba4\u989c\u8272\u662f\u7eaf\u9ed1\u8272\uff0c\u5bf9\u989c\u8272\u6311\u5254\u7684\u8bbe\u8ba1\u5e08\u4eec\u60f3\u5fc5\u96be\u4ee5\u5bb9\u5fcd\u8fd9\u4e0d\u548c\u8c10\u7684\u9ed1\u8272\uff0c\u4e8e\u662f\u4e4e\uff0cinput<\/code>\/textarea<\/code>\u7684\u989c\u8272\u91cd\u7f6e\u5728\u6240\u96be\u514d\uff0c\u4e8e\u662f\u5c31\u6709\u4e86\u4e0a\u9762\u5c55\u793a\u7684\u95ee\u9898\u3002<\/p>\n
\u4fee\u590d<\/strong>
\n\u4ee5\u524d\uff0c\u56e0\u4e3a\u7ecf\u9a8c\u4e0d\u8db3\uff0c\u5bf9placeholder\u7684\u7406\u89e3\u4e0d\u6df1\uff0c\u5bf9\u4e8eFireFox\u6d4f\u89c8\u5668\u4e0b\u7684\u8fd9\u6837\u663e\u793a\u5dee\u5f02\u662f\u501f\u52a9\u4e8eJavaScript\u811a\u672c\u4fee\u590d\u7684\uff08\u901a\u8fc7JS\u6539\u53d8\u5143\u7d20\u7684color\uff09\u3002\u73b0\u5728\u77e5\u9053\u4e86\uff0c\u8fd9\u5b8c\u5168\u662f\u516c\u516c\u80cc\u5ab3\u5987\u8fc7\u6cb3\u2014\u2014\u5403\u529b\u4e0d\u8ba8\u597d\u554a\uff01<\/p>\n
\u8f83\u597d\u7684\u505a\u6cd5\u662f\u4f7f\u7528CSS\u518d\u6b21cover\u4e00\u904d\uff0c\u5982\u4e0b\uff1a<\/p>\n
\n
input { color: #333; }\n\/* recover again *\/<\/span>\ninput:-moz-placeholder { color: #999; }<\/pre>\n<\/div>\n
\u4e8e\u662f\u4e4e\uff0cFireFox\u4e0b\u542b\u6709placeholder<\/code>\u5c5e\u6027\u7684\u6587\u672c\u63a7\u4ef6\u4eec\u9ed8\u8ba4\u989c\u8272\u53c8\u662f\u7070\u8272\u6ef4\u5566~~<\/p>\n
\u989c\u8272\u81ea\u5b9a\u4e49<\/strong>
\n\u5f53\u7136\uff0c\u5982\u679c\u60a8\u4e0d\u559c\u6b22\u6c89\u95f7\u7684\u7070\u8272\uff0c\u53ef\u4ee5\u901a\u8fc7CSS\u91cd\u7f6eplaceholder<\/code>\u5360\u4f4d\u7b26\u989c\u8272\u3002FireFox\u6d4f\u89c8\u5668\u81ea\u7136\u5c31\u662f\u4e0a\u9762\u7684:-moz-placeholder<\/code>. \u90a3\u5bf9\u4e8e\u5176\u4ed6\u73b0\u4ee3\u6d4f\u89c8\u5668\u5462\uff1f\u662f\u4e0d\u662f\u5c31\u662f:-webkit-placeholder<\/code>\u4ee5\u53ca:-o-placeholder<\/code>\u5462\uff1f<\/p>\n
\u563f\u563f\uff0csorry\uff0c\u4e0d\u662f\u7684\uff01<\/p>\n
\u5bf9\u4e8eChrome\u6d4f\u89c8\u5668\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n
\n
::-webkit-input-placeholder { color:#34538b; }<\/pre>\n<\/div>\n
\u5bf9\u4e8eOpera\u6d4f\u89c8\u5668\uff0c\u867d\u7136Opera 11\u7248\u672c\u4e2d\u5df2\u7ecf\u652f\u6301\u4e86placeholder, \u4f46\u662f\u76ee\u524d\u8fd8\u4e0d\u652f\u6301\u5176\u5360\u4f4d\u7b26\u989c\u8272\u7684\u81ea\u5b9a\u4e49\u3002<\/p>\n
Opera 11 supports placeholders too<\/a>, but you cannot style it<\/a> (yet), and it is limited to input<\/code> elements. In Opera 11.50 textarea<\/code> placeholders are implemented too.<\/p><\/blockquote>\n
\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1aplaceholder\u989c\u8272\u81ea\u5b9a\u4e49demo<\/a>
\n\"\u81ea\u5b9a\u4e49placeholder\u5360\u4f4d\u7b26\u989c\u8272\"<\/p>\n
\u4e09\u3001\u60c5\u4f55\u4ee5\u582a\u7684IE\u6d4f\u89c8\u5668<\/h3>\n
IE\u6d4f\u89c8\u5668\u5c31\u50cf\u662f\u57ce\u968d\u5e99\u7684\u4e4c\u9f9f\uff0c\u4e00\u7247\u56fa\u5b9a\u533a\u57df\u6162\u6162\u5730\u722c\u6765\u722c\u53bb\u3002\u53e3\u5934\u4e0a\u8bf4\u81ea\u5df1\u5bf9HTML5\u7684\u652f\u6301\u600e\u4e48\u6837\u600e\u4e48\u6837\uff0c\u4f46\u662f\u8ddf\u5176\u4ed6\u73b0\u4ee3\u6d4f\u89c8\u5668\u6bd4\u8d77\u6765\uff0c\u53ef\u4ee5\u81ea\u5df1\u6316\u4e2a\u6d1e\u8df3\u8fdb\u53bb\u4e86\u3002\u60f3\u5fc5\u90fd\u77e5\u9053\uff1aIE6~IE9\u90fd\u4e0d\u652f\u6301HTML5 placeholder. \u6211\u4eec\u8981\u60f3\u6e10\u8fdb\u4f7f\u7528placeholder, \u5bf9\u4e8eIE\u6d4f\u89c8\u5668\uff0c\u5fc5\u987b\u8981\u501f\u52a9JavaScript\u4ea4\u4e92\u4e86\u3002<\/p>\n
\u81ea\u7136\uff0c\u5904\u7406\u8fd9\u7c7b\u517c\u5bb9\u6027\u6709\u5173\u7684\u95ee\u9898\uff0c\u5c11\u4e0d\u4e86\u6d4f\u89c8\u5668\u7684\u5224\u65ad\u3002\u8fd9\u91cc\u8981\u5224\u65ad\u7684\u4e0d\u662f\u662f\u4e0d\u662fIE(\u56e0\u4ee5\u540eIE\u4f1a\u652f\u6301), \u800c\u662f\u662f\u5426\u652f\u6301placeholder\u5c5e\u6027\u3002\u5982\u4e0b\u68c0\u6d4b\u4ee3\u7801\uff1a<\/p>\n
\n
var isPlaceholderSupport = \"placeholder\" in document.createElement(\"input\");<\/pre>\n<\/div>\n
\u4e8e\u662f\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u81ea\u5b9a\u4e49\u4e00\u4e2a\u6a21\u62dfplaceholder\u6548\u679c\u7684\u65b9\u6cd5\uff0c\u5982\u4e0b\u4ee3\u7801\uff1a<\/p>\n
\n
var funPlaceholder = function(element) {\n    var placeholder = '';\n    if (element && !(\"placeholder\" in document.createElement(\"input\")) && (placeholder = element.getAttribute(\"placeholder\"))) {\n        element.onfocus = function() {\n            if (this.value === placeholder) {\n                this.value = \"\";\n            }\n            this.style.color = '';\n        };\n        element.onblur = function() {\n            if (this.value === \"\") {\n                this.value = placeholder;\n                this.style.color = 'graytext';    \n            }\n        };\n        \n        \/\/\u6837\u5f0f\u521d\u59cb\u5316<\/span>\n        if (element.value === \"\") {\n            element.value = placeholder;\n            element.style.color = 'graytext';    \n        }\n    }\n};<\/pre>\n<\/div>\n
\u4e0a\u9762\u4ee3\u7801\u539f\u751fJS\uff0c\u4e0d\u4f9d\u8d56JS\u5e93\uff0c\u53ef\u4ee5\u51d1\u5408\u4f7f\u7528\uff0c\u4e0d\u8fc7\u4f7f\u7528DOM level 1, \u65e0\u6cd5\u627f\u53d7\u591a\u4ea4\u4e92\u3002\u60a8\u53ef\u4ee5\u6839\u636e\u81ea\u5df1\u5b9e\u9645\u9700\u6c42\u505a\u4fee\u6539\uff01<\/p>\n
\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1aIE\u6d4f\u89c8\u5668\u4e0bplaceholder\u6a21\u62df<\/a><\/p>\n
\"IE\u6d4f\u89c8\u5668\u4e0bplaceholder<\/p>\n
\u4e00\u4e9b\u7ecf\u9a8c<\/strong>
\n\u4e3a\u4e86\u4e0d\u5f71\u54cd\u652f\u6301placeholder\u5c5e\u6027\u7684\u6d4f\u89c8\u5668\u4e0a\u7684\u8868\u73b0\uff0cIE\u6d4f\u89c8\u5668\u4e0b\u9ed8\u8ba4placeholder\u5360\u4f4d\u7b26\u7684\u663e\u793a\uff0c\u4ee5\u53ca\u6587\u672c\u7070\u8272\u5e94\u8be5\u4ea4\u7531JavaScript\u5b8c\u6210\uff0c\u800c\u4e0d\u662f\u901a\u8fc7HTML\u8bbe\u7f6e\uff0c\u5982\u4e0b\u505a\u6cd5\u662f\u4e0d\u53ef\u53d6\u7684\uff1a<\/p>\n
\n
<input type=\"email\" placeholder=\"zhangxinxu@zhangxinxu.com\" value=\"zhangxinxu@zhangxinxu.com\" style=\"color:graytext;\" size=\"26\" \/> <\/pre>\n<\/div>\n
\u5bf9\u4e8e\u73b0\u4ee3\u6d4f\u89c8\u5668\uff0cvalue<\/code>\u503c\u5373\u4f7f\u4e0eplaceholder<\/code>\u4e00\u6837\u5230\u539f\u5b50\u7ea7\uff0c\u5176\u8fd8\u662f\u5f53\u4f5cvalue<\/code>\uff0c\u4e5f\u5c31\u662f\u9f20\u6807focus<\/code>\u65f6\u5019\uff0c\u503c\u4e0d\u4f1a\u53d8\uff1b\u540c\u65f6color:graytext<\/code>\u7684\u8bbe\u7f6e\u8ba9\u6b63\u5e38\u6587\u672c\u7684\u989c\u8272\u4e5f\u7f6e\u7070\u4e86\uff0c\u8fd9\u662f\u7cdf\u7cd5\u7684\u3002<\/p>\n
\u5982\u679c\u60a8\u770b\u5230\u4e0b\u9762\u7684\u6587\u5b57\uff0c\u53ef\u80fd\u662f\u7531\u4e8e\u5728\u5176\u4ed6\u7f51\u7ad9\u6216\u662fRSS\u4e2d\u9605\u8bfb\u672c\u6587\uff0c\u672c\u6587\u539f\u5730\u5740\uff1ahttp:\/\/www.zhangxinxu.com\/wordpress\/?p=2169<\/a>\uff0c\u672c\u6587\u4f5c\u8005\uff1a\u5f20\u946b\u65ed<\/a>\uff0c\u6765\u81ea\u5f20\u946b\u65ed-\u946b\u7a7a\u95f4-\u946b\u751f\u6d3b\uff0c\u8bbf\u95ee\u539f\u51fa\u5904\u66f4\u591a\u7cbe\u5f69\u5185\u5bb9\u3002<\/em><\/div>\n
\u56db\u3001\u5f53\u9047\u5230\u81ea\u5b9a\u4e49\u4e0b\u62c9<\/h3>\n
\u8fd9\u5e74\u5934\uff0c\u6d82\u9e26\u7684\u90fd\u80fd\u4ebf\u4e07\u5bcc\u7fc1\uff0c\u6ca1\u4ec0\u4e48\u4e8b\u60c5\u9047\u4e0d\u5230\u7684\u3002placeholder\u56fa\u7136\u7280\u5229\uff0c\u4f46\u662f\uff0c\u67d0\u4e9b\u60c5\u5f62\u4e0b\uff0c\u5176\u4e5f\u4f1a\u86cb\u75bc\u83ca\u7d27\u3002<\/p>\n
\u5982\u4e0b\u5b9e\u4f8b\uff0c\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a\u5f53placeholder\u9047\u5230\u81ea\u5b9a\u4e49\u4e0b\u62c9<\/a><\/p>\n
\"\u5f53placeholder\u9047\u5230\u81ea\u5b9a\u4e49\u4e0b\u62c9<\/p>\n
\u6587\u672c\u6846focus<\/code>\u7684\u65f6\u5019\uff0c\u81ea\u5b9a\u4e49\u4e0b\u62c9\u663e\u793a\u3002\u70b9\u51fb\u4e0b\u62c9\u5217\u8868\u5143\u7d20\uff0c\u5982\u679c\u901f\u5ea6\u4e0d\u662f\u5f88\u5feb\uff0c\u4f60\u4f1a\u53d1\u73b0\uff0c\u5360\u4f4d\u7b26\u5148\u586b\u5145\u4e86\u6587\u672c\u6846\uff0c\u800c\u540e\u9009\u62e9\u5185\u5bb9\u624d\u8fdb\u5165\uff01\u8fd9\u662f\u56e0\u4e3aclick<\/code>\u4e8b\u4ef6\u6162\u4e8eblur<\/code>\u4e8b\u4ef6\u3002<\/p>\n
\u4f46\u662f\uff0c\u5728\u6d4f\u89c8\u5668\u81ea\u5e26\u4e0b\u62c9\u4e2d\u6728\u6709\u6b64\u95ee\u9898\uff1a
\n\"\u6d4f\u89c8\u5668\u81ea\u5e26\u4e0b\u62c9\u4e0eplaceholder\u65e0\u51b2\u7a81<\/p>\n
\u89e3\u51b3<\/strong>
\n\u8fd9\u53ef\u4ee5\u8bf4\u662f\u5f88\u65e0\u89e3\u7684\u95ee\u9898\u3002\u4e00\u822c\uff0c\u8fd9\u7c7b\u95ee\u9898\u7684\u505a\u6cd5\u662f\u5c06\u81ea\u5b9a\u4e49\u5217\u8868\u7684click<\/code>\u4e8b\u4ef6\u6362\u6210mousedown<\/code>\u4e8b\u4ef6\u3002\u4f8b\u5982\uff0c\u643a\u7a0b\u65c5\u6e38\u7f51<\/a>\u9996\u9875\u9009\u62e9\u65e5\u671f\u90a3\u5757\uff1a
\n\"\u643a\u7a0b\u65c5\u884c\u7f51\u9996\u9875\u65f6\u95f4\u5360\u4f4d\u7b26\u4e0e\u81ea\u5b9a\u4e49\u4e0b\u62c9\u7684\u5904\u7406\"<\/p>\n
\u4e94\u3001\u8868\u5355\u5e8f\u5217\u5316 – \u811a\u672c\u6a21\u62dfplaceholder\u7684\u5c40\u9650<\/h3>\n
\u8fd9\u91cc\u6240\u8bf4\u7684\u811a\u672c\u6a21\u62df\u662f\u6307\u4e0a\u9762\u901a\u8fc7value<\/code>\u503c\u6539\u53d8\u6a21\u62dfplaceholder<\/code>\u7684\u65b9\u6cd5\u3002<\/p>\n
value<\/code>\u6a21\u62df\u6cd5\u7684\u5c40\u9650\u6027\u6709\u4e24\u4e2a\uff1a
\n\u5176\u4e00<\/strong>\u662fvalue<\/code>\u503c\u626e\u6f14\u4e86\u4e24\u4e2a\u89d2\u8272\uff1a\u5f53value<\/code>\u503c\u548cplaceholder<\/code>\u503c\u76f8\u7b49\u65f6\uff0cvalue<\/code>\u503c\u5c31\u53d8\u6210\u4e86placeholder<\/code>\uff0c\u5176\u4f59\u65f6\u5019\u8fd8\u662fvalue<\/code>. <\/p>\n
\u8fd9\u5f88\u597d\u7406\u89e3\uff0c\u5c0f\u5f20\u770b\u89c1A\u5973\u5c31\u88c5\u5bcc\u4e8c\u4ee3\uff0c\u5176\u4ed6\u65f6\u5019\u662f\u5b9e\u6253\u5b9e\u5730\u548cB\u5973\u505a\u670b\u53cb\u3002\u53ea\u8981\u4e0d\u662f\u8499\u725b\u559d\u591a\u7684\u4eba\u90fd\u77e5\u9053\uff0c\u4e00\u65e6A\u5973\u548cB\u5973\u540c\u65f6\u51fa\u73b0\uff0c\u5c0f\u5f20\u5c31\u9ebb\u70e6\u54af – \u56e0\u4e3a\u4ed6\u4e0d\u662f\u9e23\u4eba\uff0c\u65e0\u6cd5\u5f71\u5206\u8eab\uff01\u7c7b\u4f3c\u5730\uff0c\u5982\u679c\u5b9e\u9645\u4e0a\u7684value<\/code>\u4e0eplaceholder<\/code>\u76f8\u7b49\uff0cvalue\u662f\u65e0\u6cd5\u540c\u65f6\u626e\u6f14\u4e24\u4e2a\u8eab\u4efd\u6ef4\uff0c\u4e8e\u662f\uff0cproblem\u6765\u4e86~~~~<\/p>\n
\u5176\u4e8c<\/strong>\u5c31\u662f\u5360\u4f4d\u7b26\u5145\u5f53\u4e86value<\/code>\u7684\u89d2\u8272\uff0c\u4e8e\u662f\uff0c\u5728\u8868\u5355\u5e8f\u5217\u5316\uff08\u6216\u539f\u751f\u7684\u8868\u5355\u63d0\u4ea4\uff09\u7684\u65f6\u5019\uff0c\u7c7b\u4f3c\u201c\u8bf7\u8f93\u5165\u59d3\u540d\u201d\u8fd9\u6837\u7684\u6587\u5b57\u5c31\u4f1a\u8bef\u8ba4\u4e3a\u662f\u8f93\u5165value<\/code>\u503c\u800c\u88ab\u904d\u5386\u6216\u63d0\u4ea4\u4e86\u3002<\/p>\n
\u5728\u5b9e\u9645\u60c5\u51b5\u4e2d\uff0c\u7b2c\u4e00\u4e2a\u5c40\u9650\u6027\u5f88\u5c11\u51fa\u73b0\uff0c\u4e5f\u5bb9\u6613\u907f\u514d\uff0c\u56e0\u6b64\uff0c\u6ca1\u4ec0\u4e48\u62c5\u5fe7\u548c\u8bf4\u5934\u7684\u3002\u4f46\u662f\uff0c\u7b2c\u4e8c\u4e2a\u5c40\u9650 – \u8868\u5355\u5e8f\u5217\u5316\u5374\u662f\u4e2a\u9ebb\u70e6\u7684\u4e1c\u897f\uff01<\/p>\n
\u95ee\u9898\u663e\u73b0<\/strong>
\n\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1avalue\u6a21\u62df\u6cd5\u8868\u5355\u5e8f\u5217\u5316\u4e0b\u7684\u95ee\u9898<\/a><\/p>\n
\u9760\u8c31\u6d4f\u89c8\u5668\u4e0b\u70b9\u51fbdemo\u9875\u9762\u6309\u94ae\u5219\u7ed3\u679c\u5f88OK\uff1a
\n\"\u652f\u6301placeholder\u6d4f\u89c8\u5668\u5e8f\u5217\u5316\u6b63\u5e38<\/p>\n
\u4f46\u662f\uff0c\u8bf8\u5982IE\u8fd9\u6837\uff0c\u4f7f\u7528value<\/code>\u6a21\u62dfplaceholder<\/code>\u5c5e\u6027\u7684\u6d4f\u89c8\u5668\u5c31\u76f4\u63a5\u4e2d\u67aa\u4e86\uff1a
\n\"value\u6a21\u62dfplaceholder\u8868\u5355\u5e8f\u5217\u5316\u95ee\u9898\u51fa\u73b0<\/p>\n
\u600e\u4e48\u529e\uff1f<\/strong>
\n\u663e\u7136\uff0c\u4f7f\u7528value<\/code>\u6a21\u62dfplaceholder<\/code>\u4e0d\u80fd\u5e94\u4ed8\u6240\u6709\u60c5\u51b5\u3002\u597d\u5728\uff0c\u6211\u4eec\u8fd8\u6709\u53e6\u5916\u4e00\u79cd\u6a21\u62df\u65b9\u6cd5\uff0c\u4f7f\u7528label<\/code>\u6807\u7b7e\uff0c\u79f0\u4e3alabel<\/code>\u6a21\u62df\u6cd5\u3002<\/p>\n
\u516d\u3001label\u6a21\u62df\u6cd5<\/h3>\n
\u8fd9\u662f\u65b9\u6cd5\u662f\u901a\u8fc7\u521b\u5efa\u6216\u76f4\u63a5\u4f7f\u7528label<\/code>\u6807\u7b7e\u5143\u7d20\u6765\u6a21\u62df\u3002\u53ef\u4ee5\u4f7f\u7528label\u5143\u7d20\u8986\u76d6\uff0c\u6216\u662f\u85cf\u4e8e\u6587\u672c\u63a7\u4ef6\u7684\u4e0b\u65b9\uff08\u6b64\u65f6\u6587\u672c\u63a7\u4ef6\u80cc\u666f\u9700\u8981transparent\u900f\u660e\uff09\u3002\u6211\u4eec\u5148\u770b\u51e0\u4e2a\u5e94\u7528\u5b9e\u4f8b\uff1a<\/p>\n
\u6dd8\u5b9d\u9996\u9875\u641c\u7d22\u7684\u5c0f\u56fe\u6807\u7684placeholder\u6548\u679c\u5c31\u662f\u4f7f\u7528\u7684\u8be5\u65b9\u6cd5\uff1a
\n\"\"<\/p>\n
\u4e0d\u8fc7\uff0c\u4e3a\u4e86\u65b9\u4fbf\u5b66\u4e60\uff0c\u6211\u4eec\u8fd8\u662f\u770b\u7b80\u5355\u901a\u4fd7\u6613\u61c2\u7684\u4f8b\u5b50\u3002\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1alabel\u6a21\u62df\u6cd5demo<\/a><\/p>\n
\u4e0a\u9762demo\u5728\u73b0\u4ee3\u6d4f\u89c8\u5668\u4e0b\u4f9d\u7136\u4f7f\u7528\u7684\u81ea\u5e26placeholder\u7279\u6027\uff0cIE\u6d4f\u89c8\u5668\u4e0b\u5219\u662f\u4f7f\u7528label\u521b\u5efa\u7684\u5360\u4f4d\u7b26\u6548\u679c\u3002\u6211\u4eec\u7528IE\u5f00\u53d1\u5de5\u5177\u7b80\u5355\u7aa5\u63a2\u4e00\u4e0b\uff0c\u5c31\u53ef\u4ee5\u770b\u5230\u521b\u5efa\u7684\u5360\u4f4d\u7b26\u5143\u7d20\u4e86\uff08\u6b64\u65f6\u6587\u672c\u6846\u7684value\u662f\u7a7a\u7684\uff09\uff1a
\n\"IE\u6d4f\u89c8\u5668\u4e0b\u521b\u5efa\u7684label\u5360\u4f4d\u7b26\u5143\u7d20<\/p>\n
\u9650\u4e8e\u76f8\u5173\u4ee3\u7801\u7bc7\u5e45\u76f8\u5bf9\u957f\u4e86\u70b9\uff0c\u8fd9\u91cc\u5c31\u4e0d\u5c55\u793a\u4e86\uff0c\u60a8\u6709\u5174\u8da3\u53ef\u4ee5\u5728demo\u9875\u9762\u4e0a\u67e5\u770b\u3002<\/p>\n
\u95ee\u9898<\/strong>
\ndemo\u9875\u9762\u53ea\u662f\u5927\u81f4\u6548\u679c\uff0c\u5176\u4e2d\u8fd8\u6709\u4e9b\u60c5\u51b5\u5e76\u6ca1\u6709\u5904\u7406\u3002\u4f8b\u5982\u4f60\u60f3\u53f3\u952e \u2192 \u7c98\u8d34\u5185\u5bb9\u7684\u65f6\u5019\u3002<\/p>\n
\u539f\u56e0\u5728\u4e0e\u8fd9\u91cc\u7684label\u5360\u4f4d\u7b26\u662f\u91c7\u7528\u8986\u76d6\u7684\u5f62\u5f0f\u663e\u793a\u5728\u6587\u672c\u6846\u4e0a\u7684\uff0c\u4e8e\u662f\uff0c\u5f53\u6211\u4eec\u53f3\u952e\u6587\u672c\u6846\u7684\u65f6\u5019\uff0c\u5b9e\u9645\u4e0a\u662f\u53f3\u952e\u7684label\u5143\u7d20\uff08\u975e\u53ef\u7f16\u8f91\uff09\uff0c\u56e0\u6b64\uff0c\u6211\u4eec\u65e0\u6cd5\u901a\u8fc7\u9f20\u6807\u7c98\u8d34\u5185\u5bb9\u3002<\/p>\n
\u5360\u4f4d\u7b26\u6587\u5b57\u8d8a\u957f\uff0c\u8be5\u95ee\u9898\u51fa\u73b0\u7684\u51e0\u7387\u5c31\u8d8a\u5927\u3002<\/p>\n
\u8981\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u8f83\u597d\u7684\u505a\u6cd5\u662f\u901a\u8fc7CSS\/HTML\u89e3\u51b3\uff0c\u5373label\u5143\u7d20\u85cf\u4e8e\u6587\u672c\u6846\u7684\u4e0b\u65b9\uff0c\u4f46\u662f\uff0c\u6587\u672c\u6846\u80cc\u666f\u900f\u660e\u4ee5\u663e\u793a\u4e0b\u9762\u7684\u5360\u4f4d\u7b26\u6587\u5b57\u3002\u5982\u679c\u60f3\u901a\u8fc7\u4e8b\u4ef6\u89e3\u51b3\uff0c\u6bd4\u8f83\u6298\u817e\uff0c\u8bb2\u8d77\u6765\u53c8\u662f\u5570\u54e9\u5427\u55e6\uff0c\u8fd9\u4e2a\u6682\u65f6\u5148\u653e\u7740\u3002<\/p>\n
\u8fd8\u6709\u4e00\u4e2a\u95ee\u9898\u5c31\u662f\uff0clabel\u5143\u7d20\u4e2d\u63d0\u793a\u7684\u6587\u5b57\u957f\u5ea6\u4e0d\u80fd\u8d85\u8fc7\u6587\u672c\u63a7\u4ef6\u7684\u957f\u5ea6~~<\/p>\n
\u4e03\u3001\u62d3\u5c55\uff1a\u65b0\u7684\u5360\u4f4d\u7b26\u4ea4\u4e92\u5f62\u5f0f\u5b9e\u73b0<\/h3>\n
\u968f\u7740\u4ea4\u4e92\u4f53\u9a8c\uff0c\u4ee5\u53ca\u4e00\u4e9b\u6f6e\u6d41\u8d8b\u52bf\u7684\u65b9\u6cd5\u3002\u51fa\u73b0\u4e86\u4e00\u79cd\u65b0\u7684\u5360\u4f4d\u7b26\u4ea4\u4e92\u4f53\u9a8c\u65b9\u5f0f\uff0c\u60f3\u5fc5\u4f7f\u7528hotmail\u65f6\u5019\u90fd\u6ce8\u610f\u5230\u4e86\uff0c\u8d26\u6237\u5360\u4f4d\u7b26\u63d0\u793afocus<\/code>\u7684\u65f6\u5019\u5e76\u4e0d\u662f\u628a\u5360\u4f4d\u7b26\u7684\u5185\u5bb9\u9690\u6389\uff0c\u800c\u662f\u534a\u900f\u660e\u4e86\u3002\u8fd8\u6709Opera\u6d4f\u89c8\u5668\u643a\u5e26\u7684\u641c\u7d22\u5f15\u64ce\u6846\u7684\u63d0\u793a\u6548\u679c\u4e5f\u662f\u5982\u6b64\u3002<\/p>\n
\u5f53\u524d\uff0c\u5728web\u5f00\u53d1\u4e2d\uff0c\u4e5f\u6709\u6b64\u5f62\u5f0f\u7684\u5360\u4f4d\u7b26\u4ea4\u4e92\u6548\u679c\uff1a<\/p>\n
QQ\u90ae\u7bb1\u767b\u9646<\/strong>(http:\/\/mail.qq.com<\/a>)
\n\u5982\u4e0b\u622a\u56fe\u5566\uff1a
\n\"QQ\u90ae\u7bb1\u767b\u9646\u754c\u9762<\/p>\n
\u6211\u5728\u4e0a\u9762\u4e00\u4e2ademo\u7c7b\u4f3c\u539f\u7406\u4e0a\u505a\u4e86\u4e0b\u4fee\u6539\uff0c\u5236\u4f5c\u4e86\u4e00\u4e2a\u8fd9\u6837\u5b50\u4ea4\u4e92\u6548\u679c\u7684demo\uff0c\u5e0c\u671b\u5bf9\u6709\u5174\u8da3\u7684\u540c\u884c\u80fd\u5e2e\u4e0a\u70b9\u5fd9\uff0c\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a\u900f\u660e\u5ea6\u53d8\u5316\u7684\u5360\u4f4d\u7b26\u4ea4\u4e92demo<\/a><\/p>\n
\u4e0a\u9762\u7684demo\u5fc5\u987b\u5728\u4e0d\u652f\u6301placeholder\u5c5e\u6027\u7684\u6d4f\u89c8\u5668\u4e0b\u624d\u770b\u5f97\u5230\u6548\u679c\u3002\u4e0b\u622a\u56fe\u6765\u81eaIE9\u6d4f\u89c8\u5668\uff1a
\n\"IE9\u6d4f\u89c8\u5668\u4e0b\u900f\u660e\u5ea6\u53d8\u5316\u5360\u4f4d\u7b26\u4ea4\u4e92\u6548\u679c\u622a\u56fe<\/p>\n
\u540c\u6837\u7684\uff0c\u76f8\u5173\u4ee3\u7801\u53c2\u8003demo\u9875\u9762\u3002\u540c\u6837\u662f\u8986\u76d6\u5f62\u5f0f\u7684label\u5143\u7d20\uff0c\u53f3\u952e\u4e0a\u4e0b\u6587\u662f\u6709\u95ee\u9898\u7684\u3002<\/p>\n
\u516b\u3001\u7efc\u5408\uff1aplaceholder\u6a21\u62dfjQuery\u63d2\u4ef6<\/h3>\n
\u6700\u540e\uff0c\u9644\u4e0a\u4e00\u4e2a\u7ed3\u5408\u4e86\u4e0a\u9762\u8bf8\u5982\u8ba8\u8bba\u7684placeholder\u6a21\u62df\u63d2\u4ef6 – jquery.placeholder.js<\/a>\uff08\u5f88\u5c0f\uff0c\u52a0\u4e0a\u6ce8\u91ca\u4e00\u767e\u591a\u884c\uff09<\/p>\n
\u662f\u81ea\u5df1\u4eca\u513f\u4e2a\u665a\u4e0a\u5192\u7740\u5bb6\u5ead\u4e0d\u548c\u7766\u7684\u5371\u9669\u5199\u7684\uff08\u5143\u5bb5\u8282\u554a\uff0c\u665a\u996d\u540e\u8dd1\u516c\u53f8\u6765\u4e86\uff09\uff0c\u6025\u6025\u5fd9\u5fd9\uff0c\u7b80\u5355\u6d4b\u8bd5\u4e86\u4e0b\uff0c\u65e5\u540e\u6709\u4e9bbug\u518d\u4fee\u8865\u4fee\u8865\u3002<\/p>\n
\u4f7f\u7528<\/strong>
\n1. JS\u90e8\u5206
\n\u5982\u4e0b\u6700\u7b80\u5355\u793a\u4f8b\uff1a<\/p>\n
\n
<script src=\"jquery1.7.1-min.js\"><\/script>\n<script src=\"jquery.placeholder.js\"><\/script>\n<script>\n$(function() {\n    $(\"#test\").placeholder();\t\n});\n<\/script><\/pre>\n<\/div>\n
2. \u5bf9\u5e94HTML
\n\u4e0a\u9762\u811a\u672c\u5bf9\u5e94HTML\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
\n
<input id=\"test\" placeholder=\"\u6d4b\u8bd5\" \/><\/pre>\n<\/div>\n
\u53c2\u6570<\/strong>
\n\u63d2\u4ef6\u76f8\u5173\u53c2\u6570\u53c2\u89c1\u4e0b\u8868\uff1a<\/p>\n\n\n\n\n\n\n\n
\u6807\u9898<\/th>\n\u63cf\u8ff0<\/th>\n\u9ed8\u8ba4<\/th>\n<\/tr>\n
labelMode<\/td>\n\u5e03\u5c14\u578b \u662f\u5426\u4f7f\u7528label\u6807\u7b7e\u6a21\u62df\u5360\u4f4d\u7b26\u6548\u679c\u3002\u9ed8\u8ba4\u4e3afalse\uff0c\u8868\u793a\u4f7f\u7528value\u6a21\u62df\u6cd5<\/td>\nfalse<\/td>\n<\/tr>\n
labelStyle<\/td>\n\u5bf9\u8c61 \u5982\u679c\u4f7f\u7528label\u6a21\u62df\u6cd5\uff0c\u5219\u521b\u5efa\u7684label\u5143\u7d20\u91cd\u7f6e\u7684\u6216\u65b0\u7684\u6837\u5f0f\u96c6<\/td>\n{}<\/td>\n<\/tr>\n
labelAlpha<\/td>\n\u5e03\u5c14\u578b \u5982\u679c\u4f7f\u7528label\u6a21\u62df\u6cd5\uff0c\u5176\u4ea4\u4e92\u65b9\u5f0f\u662f\u5426\u4f7f\u7528\u900f\u660e\u5ea6\u5207\u6362\u7684\u5f62\u5f0f\u3002\u9ed8\u8ba4\u4e3afalse\uff0c\u8868\u793a\u4f7f\u7528\u503c\u663e\u793a\u4e0e\u4e0d\u663e\u793a\u8fd9\u79cd\u4ea4\u4e92<\/td>\nfalse<\/td>\n<\/tr>\n
labelAcross<\/td>\n\u5e03\u5c14\u578b \u5982\u679c\u4f7f\u7528label\u6a21\u62df\u6cd5\uff0c\u540c\u65f6\u4ea4\u4e92\u65b9\u5f0f\u662f\u900f\u660e\u5ea6\u5207\u6362\uff0c\u662f\u5426\u8ba9\u6240\u6709\u7684\u6d4f\u89c8\u5668\u90fd\u662f\u8fd9\u79cd\u6548\u679c\uff08\u91cd\u7f6e\u73b0\u4ee3\u6d4f\u89c8\u5668\u9ed8\u8ba4placeholder\u4ea4\u4e92\u6548\u679c\uff09\u3002\u9ed8\u8ba4\u4e3afalse\uff0c\u8868\u793a\u6d4f\u89c8\u5668\u9ed8\u8ba4\u4f7f\u7528\u81ea\u5e26placeholder\u4ea4\u4e92\u6548\u679c\u3002<\/td>\nfalse<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u5b9e\u4f8b\u9875\u9762<\/strong>
\n\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1ajquery.placeholder.js\u63d2\u4ef6\u7b80\u5355\u6d4b\u8bd5demo<\/a><\/p>\n
\u5c0f\u5c0fdemo\u9875\u9762\u622a\u56fe\u4e00\u5f20\uff08\u540e\u56e0\u6b21\u65e5\u6dfb\u52a0\u4e86\u5982\u4f55\u8ba9\u201clabel\u63d0\u793a\u6587\u5b57\u5728\u6587\u672c\u6846\u4e0b\u65b9\u663e\u793a\u201d\u5b9e\u4f8b\uff0c\u56e0\u6b64demo\u5b9e\u9645\u6a21\u6837\u4e0e\u4e0b\u9762\u6709\u4e9b\u5c0f\u51fa\u5165\uff09\uff1a
\n\"\"<\/p>\n
\u8bf4\u660e<\/strong><\/p>\n
    \n
  1. \u63d2\u4ef6\u652f\u6301value\u6a21\u62df\u6cd5\u548clabel\u6a21\u62df\u6cd5\uff1b\u800c\u4e14label\u6a21\u62df\u6cd5\u652f\u6301\u65b0\u5f0f\u7684\u900f\u660e\u5ea6\u4ea4\u4e92\u6548\u679c\uff1b\u800c\u4e14\u53ef\u4ee5\u8bbe\u7f6e\u662f\u5426\u8ba9FireFox, Chrome\u8fd9\u4e9b\u6d4f\u89c8\u5668\u4e5f\u4ee5\u8fd9\u79cd\u5f62\u5f0f\u4ea4\u4e92\u3002<\/li>\n
  2. \u4f7f\u7528label\u6a21\u5f0f\u6a21\u62df\u5360\u4f4d\u7b26\u7684\u65f6\u5019\uff0c\u5982\u679c\u6587\u672c\u63a7\u4ef6\u6ca1\u6709id<\/code>\uff0c\u5219\u63d2\u4ef6\u4f1a\u81ea\u52a8\u521b\u5efa\u4e00\u4e2a\u968f\u673aid<\/code>.<\/li>\n
  3. \u56e0\u4e3a\u8003\u8651\u5230\u63d2\u4ef6\u5316\uff0c\u8ba9\u63d2\u4ef6\u85cf\u5728\u5143\u7d20\u5e95\u90e8\u662f\u4e0d\u663e\u793a\u7684\uff08\u56e0\u4e3a\u4e0d\u80fd\u5f3a\u884c\u8bbe\u7f6e\u6587\u672c\u63a7\u4ef6\u80cc\u666f\u900f\u660e\uff09\uff0c\u56e0\u6b64\u63d2\u4ef6\u7684label\u5143\u7d20\u90fd\u662f\u8986\u76d6\u5728\u6587\u672c\u63a7\u4ef6\u4e0a\u6a21\u62df\u5360\u4f4d\u7b26\u6548\u679c\u7684\u3002\u56e0\u6b64\uff0c\u53f3\u952e\u4e0a\u4e0b\u6587\u662f\u6709\u95ee\u9898\u7684\u3002\u63d2\u4ef6\u5bf9\u6b64\u6240\u505a\u7684\u5904\u7406\u5c31\u662f\u628a\u5360\u4f4d\u7b26\u4e0a\u4e0b\u6587\u7684\u4e8b\u4ef6\u7ed9\u5899\u6389\u4e86\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7labelStyle<\/code>\u53c2\u6570\u6539\u53d8\u5360\u4f4d\u7b26label\u5143\u7d20\u7684\u5c42\u7ea7\u554a\uff0c\u4f4d\u7f6e\u4ec0\u4e48\u7684\u5b8c\u5584\u8fd9\u4e2a\u5c0f\u95ee\u9898\u3002<\/li>\n
  4. \u4e8b\u4ef6\u4ed3\u4fc3\uff0cbug\u80af\u5b9a\u6709\u3002\u5982\u679c\u6709\u5e78\u88ab\u60a8\u4f7f\u7528\u4e86\uff0c\u540c\u65f6\u53d1\u73b0\u4e86\u95ee\u9898\uff0c\u6b22\u8fce\u63d0\u4ea4bug.<\/li>\n<\/ol>\n
    \u4e5d\u3001\u5feb\u901f\u7ed3\u8bed<\/h3>\n
    \u5728\u8fd9\u548c\u8c10\u7684\u65e5\u5b50\uff0c\u6211\u8fd8\u9876\u7740\u538b\u529b\u8fc7\u6765\u6298\u817e\u6587\u7ae0\uff0c\u4e0d\u5bb9\u6613\u554a\u3002\u60f3\u60f3\u4ee5\u524d\uff0c\u60f3\u5199\u5230\u4ec0\u4e48\u65f6\u5019\u5c31\u4ec0\u4e48\u65f6\u5019\uff0c\u73b0\u5728\u6ca1\u90a3\u4e48\u81ea\u7531\u4e86\u3002\u4e00\u664323:00, \u6211\u5fc5\u987b\u8981\u64a4\u4e86\u3002\u672c\u6587\u7684\u7ed3\u8bed\u554a\u4ec0\u4e48\u7684\u5c31\u59d4\u5c48\u4e0b\uff0c\u4e0d\u8ba9\u4f60\u4eec\u51fa\u6765\u8868\u6f14\u4e86\u3002<\/p>\n
    \u611f\u8c22\u60a8spend\u8fd9\u4e48\u591atime\u9605\u8bfb\u5230here! <\/p>\n
    \u672c\u6587\u4e3a\u539f\u521b\u6587\u7ae0\uff0c\u8f6c\u8f7d\u8bf7\u6ce8\u660e\u6765\u81ea\u5f20\u946b\u65ed-\u946b\u7a7a\u95f4-\u946b\u751f\u6d3b<\/a>[http:\/\/www.zhangxinxu.com<\/a>]
    \n\u672c\u6587\u5730\u5740\uff1a    http:\/\/www.zhangxinxu.com\/wordpress\/?p=2169<\/a><\/p>\n
    \uff08\u672c\u7bc7\u5b8c\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"
    <\/a>
    \n\u76ee\u524d\uff0c\u73b0\u4ee3\u6d4f\u89c8\u5668\u5747\u65e9\u5df2\u652f\u6301placeholder\u5360\u4f4d\u7b26\u5c5e\u6027\u3002\u597d\u5b9a\u897f\u4e0d\u7528\u767d\u4e0d\u7528\u554a\uff0c\u56e0\u6b64\uff0c\u5728\u524d\u5e74\uff0c\u6211\u5c31\u5c06HTML5\u7684placeholder\u5360\u4f4d\u7b26\u5c5e\u6027\u5e94\u7528\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\u4e86\u3002\u5728\u8fd9\u4e00\u5e74\u591a\u7684\u5e94\u7528\u4e2d\uff0c\u8fd8\u662f\u6709\u4e9b\u78d5\u78d5\u78b0\u78b0\uff0c\u5728\u6b64\u4f5c\u4e3a\u7ecf\u9a8c\u5206\u4eab\u4e0b\u3002\u4e00\u6765\u52a0\u6df1\u5927\u5bb6\u4e0eplaceholder\u7684\u8ba4\u8bc6\uff0c\u4e8c\u662f\u5e0c\u671b\u5927\u5bb6\u53ef\u4ee5\u79ef\u6781\u5927\u80c6\u5e94\u7528\u4e00\u4e9bHTML5\u7684\u65b0\u7279\u6027\u3002
    \n\u7136\u540e\uff0c\u8fd8\u8981\u5bf9\u5360\u4f4d\u7b26\u7684\u4e00\u4e9b\u5e94\u7528\u505a\u6269\u5c55\u3002\u672c\u6587\u662f\u4e2a\u6392\u5f97\u4e0a\u4f4d\u7f6e\u7684\u957f\u7bc7\uff0c\u5185\u5bb9\u591a\u800c\u6742\uff0c\u4e0d\u8fc7demo\u554a\uff0c\u622a\u56fe\u554a\uff0c\u5b9e\u4f8b\u7684\uff0c\u4ee3\u7801\u7684\u90fd\u5f88\u8be6\u5c3d\uff0c\u5185\u5bb9\u4e5f\u90fd\u662f\u4e9b\u503c\u5f97\u8bdd\u65f6\u95f4\u5480\u56bc\u7684\u4e1c\u897f\u2026\u2026 \u76f8\u4fe1\u4f1a\u5bf9\u60a8\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\u7684\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[52,13,14,614,677,678,548,140,676,50,409,408],"_links":{"self":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/2169"}],"collection":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/comments?post=2169"}],"version-history":[{"count":0,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/2169\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/media?parent=2169"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/categories?post=2169"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/tags?post=2169"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}