{"id":755,"date":"2010-04-14T14:31:55","date_gmt":"2010-04-14T06:31:55","guid":{"rendered":"http:\/\/www.zhangxinxu.com\/wordpress\/?p=755"},"modified":"2018-01-01T15:48:59","modified_gmt":"2018-01-01T07:48:59","slug":"%e6%96%b0%e6%b5%aa%e5%be%ae%e5%8d%9a%e6%8f%92%e5%85%a5%e8%af%9d%e9%a2%98%e5%90%8e%e9%83%a8%e5%88%86%e6%96%87%e5%ad%97%e9%80%89%e4%b8%ad%e7%9a%84js%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2010\/04\/%e6%96%b0%e6%b5%aa%e5%be%ae%e5%8d%9a%e6%8f%92%e5%85%a5%e8%af%9d%e9%a2%98%e5%90%8e%e9%83%a8%e5%88%86%e6%96%87%e5%ad%97%e9%80%89%e4%b8%ad%e7%9a%84js%e5%ae%9e%e7%8e%b0\/","title":{"rendered":"\u65b0\u6d6a\u5fae\u535a\u63d2\u5165\u8bdd\u9898\u540e\u90e8\u5206\u6587\u5b57\u9009\u4e2d\u7684js\u5b9e\u73b0"},"content":{"rendered":"

by zhangxinxu<\/a> from http:\/\/www.zhangxinxu.com<\/a>
\n\u672c\u6587\u5730\u5740\uff1ahttp:\/\/www.zhangxinxu.com\/wordpress\/?p=755<\/a><\/p>\n

\u4e00\u3001\u539f\u6548\u679c\u9884\u89c8<\/h3>\n

\u9ec4\u5386\u663e\u793a\u4eca\u5929\u8bf4\u8bdd\u4e0d\u9002\u5b9c\u5356\u5173\u5b50\uff0c\u6240\u4ee5\u76f4\u63a5\u4e0a\u56fe\uff1a<\/p>\n

\"\u65b0\u6d6a\u5fae\u535a\u63d2\u5165\u8bdd\u9898\u540e\u90e8\u5206\u6587\u5b57\u9009\u4e2d<\/div>\n

\u70b9\u51fb\u201c\u8bdd\u9898\u201d\u8fd9\u4e2a\u6587\u5b57\u6309\u94ae\u540e\uff0c\u5728\u8f93\u5165\u6846\u6587\u672c\u57df\u91cc\u9762\u5c31\u4f1a\u6dfb\u52a0\u4e00\u6bb5\u6587\u5b57\u201c#\u8bf7\u5728\u8fd9\u91cc\u8f93\u5165\u81ea\u5b9a\u4e49\u8bdd\u9898#\u201d\uff0c\u5176\u4e2d\u201c\u8bf7\u5728\u8fd9\u91cc\u8f93\u5165\u81ea\u5b9a\u4e49\u8bdd\u9898\u201d\u5904\u4e8e\u88ab\u9009\u4e2d\u7684\u72b6\u6001\uff0c\u8fd9\u6837\u7528\u6237\u65e0\u9700\u518d\u9009\u4e2d\u6587\u5b57\uff0c\u76f4\u63a5\u6572\u952e\u76d8\u5c31\u53ef\u4ee5\u66ff\u6362\u8fd9\u90e8\u5206\u5185\u5bb9\uff0c\u8fd9\u662f\u975e\u5e38\u597d\u7684\u4e00\u4e2a\u63d0\u9ad8\u7528\u6237\u4f53\u9a8c\u7684\u7ec6\u8282\u3002<\/p>\n

\u5982\u679c\u60a8\u6709\u65b0\u6d6a\u5fae\u535a\u8d26\u53f7\uff0c\u5e94\u8be5\u5bf9\u8fd9\u4e2a\u529f\u80fd\u6bd4\u8f83\u719f\u6089\uff1b\u5982\u679c\u60a8\u5c1a\u672a\u6ce8\u518c\u65b0\u6d6a\u5fae\u535a\uff0c\u53ef\u4ee5\u70b9\u51fb\u8fd9\u91cc<\/a>\u6ce8\u518c\u3002\/\/zxx:\u6211\u53d1\u73b0\u6211\u597d\u50cf\u6210\u4e86\u65b0\u6d6a\u7684\u6258\u4e86\uff0c\u4e0d\u884c\uff0c\u6211(\u4e0d<\/del>)\u8981\u5411\u65b0\u6d6a\u8981\u5e7f\u544a\u8d39\u2026\u2026<\/span><\/p>\n

\u4e8c\u3001\u6548\u679c\u7684\u5b9e\u73b0<\/h3>\n

\u6587\u5b57\u7684\u9009\u4e2d\u529f\u80fd\u662f\u4e0d\u592a\u5e38\u7528\u7684\u529f\u80fd\uff0c\u591a\u51fa\u73b0\u5728\u6587\u672c\u7f16\u8f91\u5668\u4e2d\uff0c\u6216\u662f\u6587\u672c\u57df\u4e4b\u7c7b\u7684\u5149\u6807\u5904\u7406\u4e0a\u3002\u6240\u4ee5\u5462\uff0c\u4f7f\u7528\u7684\u4e00\u4e9b\u5c5e\u6027\u4e5f\u5e76\u4e0d\u662f\u5e38\u89c1\u7684\u3002\u5728IE\u6d4f\u89c8\u5668\u4e0b\u4f7f\u7528\u7684\u662fcreateTextRange\u800cFirefox\/chrome\u7b49\u73b0\u4ee3\u6d4f\u89c8\u5668\u4e0b\u4f7f\u7528\u7684\u662fsetSelectionRange\u3002<\/p>\n

\u5047\u8bbe\u6587\u672c\u57df\u5bf9\u8c61\u7684\u540d\u79f0\u662fobj\uff0c\u5219\u5728IE\u53ca\u975eIE\u6d4f\u89c8\u5668\u4e0b\u5b9e\u73b0\u6307\u5b9a\u6587\u5b57\u9009\u4e2d\u7684\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n

IE\u6d4f\u89c8\u5668\u4e0b\uff1a<\/p>\n
\n
\nvar range = obj.createTextRange();  \nrange.moveStart(\"character\", \u5f00\u59cb\u5e8f\u53f7);           \nrange.moveEnd(\"character\", \u7ed3\u675f\u5e8f\u53f7);\nrange.select();\n<\/pre>\n<\/div>\n<\/div>\n
\u975eIE\u6d4f\u89c8\u5668\u4e0b\uff1a<\/p>\n
\n
\nobj.setSelectionRange(\u5f00\u59cb\u5e8f\u53f7, \u7ed3\u675f\u5e8f\u53f7);\nobj.focus();\n<\/pre>\n<\/div>\n<\/div>\n
\u6240\u4ee5\uff0c\u4e3a\u4e86\u5728\u5404\u4e2a\u6d4f\u89c8\u5668\u4e0b\u90fd\u80fd\u5b9e\u73b0\u6548\u679c\uff0c\u6211\u4eec\u9700\u8981\u5c06\u4e0a\u9762\u7684\u4e24\u6bb5\u4ee3\u7801\u7ec4\u5408\u4e00\u4e0b\uff0c\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n
\n
if(obj.createTextRange){\/\/IE\u6d4f\u89c8\u5668<\/span>\n    var range = obj.createTextRange();              \n    range.moveEnd(\"character\",\u7ed3\u675f\u5e8f\u53f7);\n    range.moveStart(\"character\", \u8d77\u59cb\u5e8f\u53f7);\n    range.select();\n}else{\/\/\u975eIE\u6d4f\u89c8\u5668<\/span>\n    obj.setSelectionRange(\u8d77\u59cb\u5e8f\u53f7, \u7ed3\u675f\u5e8f\u53f7);\n    obj.focus();\n}<\/pre>\n<\/div>\n
\u4e09\u3001\u6548\u679c\u5b9e\u4f8b<\/h3>\n
\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a\u6587\u672c\u57df\u6587\u5b57\u90e8\u5206\u9009\u4e2d\u5b9e\u73b0demo<\/a><\/p>\n
\u64cd\u4f5c\u5982\u4e0b\u56fe\u6807\u793a\uff1a<\/p>\n
\"\u63d2\u5165\u8bdd\u9898\u540e\u90e8\u5206\u6587\u5b57\u9009\u4e2ddemo\u4f7f\u7528\u793a\u4f8b<\/div>\n
\u6b64demo\u4ee3\u7801\u5728\u9875\u9762\u4e0a\u5747\u6709\u5c55\u793a\uff0c\u4ee3\u7801\u7684\u4f5c\u7528\u4ec5\u4ec5\u662f\u793a\u4f8b\uff0c\u4ee3\u7801\u7684\u6548\u7387\u4e66\u5199\u7b49\u90fd\u6709\u5f85\u6539\u5584\uff0c\u5982\u679c\u60a8\u60f3\u8981\u5c01\u88c5\u826f\u597d\u7684\u6587\u5b57\u9009\u62e9\u4ee3\u7801\uff0c\u8bf7\u770b\u4e0b\u9762\u4e00\u8282\u3002<\/p>\n
\u56db\u3001\u6587\u5b57\u5185\u5bb9\u90e8\u5206\u9009\u4e2d\u7684\u4ee3\u7801\u5c01\u88c5<\/h3>\n
\u5173\u4e8e\u6587\u5b57\u5185\u5bb9\u7684\u9009\u4e2d\u53ef\u4ee5\u7528\u4e00\u4e2a\u65b9\u6cd5\u5c01\u88c5\u8d77\u6765\uff0c\u4ee5\u4fbf\u91cd\u7528\uff0c\u7531\u4e8eIE\u4e0d\u652f\u6301DOM leave3\uff0c\u6240\u4ee5Object.prototype\u4e0d\u53d7\u7528\u4e8eDOM\u5bf9\u8c61\uff0c\u6240\u4ee5\u8fd9\u91cc\u7684\u65b9\u6cd5\u8fd8\u662f\u6bd4\u8f83\u4f20\u7edf\u7684\uff0c\u5982\u4e0b\u4ee3\u7801\uff1a<\/p>\n
\n
\nvar textSelect = function(o, a, b){\n    \/\/o\u662f\u5f53\u524d\u5bf9\u8c61\uff0c\u4f8b\u5982\u6587\u672c\u57df\u5bf9\u8c61\n    \/\/a\u662f\u8d77\u59cb\u4f4d\u7f6e\uff0cb\u662f\u7ec8\u70b9\u4f4d\u7f6e\n    var a = parseInt(a, 10), b = parseInt(b, 10);\n    var l = o.value.length;\n    if(l){\n        \/\/\u5982\u679c\u975e\u6570\u503c\uff0c\u5219\u8868\u793a\u4ece\u8d77\u59cb\u4f4d\u7f6e\u9009\u62e9\u5230\u7ed3\u675f\u4f4d\u7f6e\n        if(!a){\n            a = 0;    \n        }\n        if(!b){\n            b = l;    \n        }\n        \/\/\u5982\u679c\u503c\u8d85\u8fc7\u957f\u5ea6\uff0c\u5219\u5c31\u662f\u5f53\u524d\u5bf9\u8c61\u503c\u7684\u957f\u5ea6\n        if(a > l){\n            a = l;    \n        }\n        if(b > l){\n            b = l;    \n        }\n        \/\/\u5982\u679c\u4e3a\u8d1f\u503c\uff0c\u5219\u4e0e\u957f\u5ea6\u503c\u76f8\u52a0\n        if(a < 0){\n            a = l + a;\n        }\n        if(b < 0){\n            b = l + b;    \n        }\n        if(o.createTextRange){\/\/IE\u6d4f\u89c8\u5668\n            var range = o.createTextRange();         \n            range.moveStart(\"character\",-l);              \n            range.moveEnd(\"character\",-l);\n            range.moveStart(\"character\", a);\n            range.moveEnd(\"character\",b);\n            range.select();\n        }else{\n            o.setSelectionRange(a, b);\n            o.focus();\n        }\n    }\n};<\/pre>\n<\/div>\n
\u4f8b\u5982\uff0c\u6267\u884ctextSelect(obj, 10 30)<\/code>\u5c31\u610f\u5473\u7740\u5bf9\u540d\u4e3aobj\u7684DOM\u5bf9\u8c61\u503c\u4e2d\u7684\u7b2c10\u4e2a\u5230\u7b2c30\u4e2a\u5b57\u7b26\u8fdb\u884c\u9009\u4e2d\u3002<\/p>\n
\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a\u5c01\u88c5\u826f\u597d\u7684\u6587\u5b57\u9009\u4e2d\u4ee3\u7801\u6d4b\u8bd5demo<\/a><\/p>\n
\u4e00\u4e9b\u8bf4\u660e\uff1a<\/strong>
1. \u53ea\u53d7\u7528\u4e8e\u4e00\u4e9b\u542b\u6709value\u5c5e\u6027\u7684HTML\u63a7\u4ef6\uff0c\u4f8b\u5982\u5355\u884c\u6587\u672c\u6846\u3001\u591a\u884c\u6587\u672c\u57df\uff1b
2. \u540e\u9762\u4e24\u4e2a\u53c2\u6570\u8868\u793a\u8d77\u59cb\u5b57\u7b26\u4f4d\u7f6e\u4e0e\u7ed3\u675f\u7684\u5b57\u7b26\u4f4d\u7f6e\uff0c\u5982\u679c\u4f4d\u7f6e\u503c\u4e3a\u7a7a\uff0c\u6216\u662f\u975e\u6570\u503c\uff0c\u5219\u4f1a\uff08\u4ece\u5934\u6216\u81f3\u5c3e\u6216\u5168\u90e8\uff09\u9009\u62e9\u5b57\u7b26\uff1b
3. \u652f\u6301\u8d1f\u503c\uff0c\u8d1f\u503c\u8868\u610f\u4e0ejs\u4e2d\u7684slice\u5c5e\u6027\u4e00\u81f4\uff0c\u8d1f\u503c\u8868\u793a\u7684\u542b\u4e49\u5c31\u662f\u8d1f\u503c\u4e0e\u5b57\u7b26\u603b\u957f\u5ea6\u7684\u548c\uff0c\u4e5f\u53ef\u4ee5\u7406\u89e3\u4e3a\u4ece\u672b\u5c3e\u5f00\u59cb\u9009\u62e9\uff1b
4. \u5982\u679c\u6570\u503c\u8303\u56f4\u8d85\u8fc7\u5b57\u7b26\u603b\u957f\uff0c\u5219\u65e0\u5185\u5bb9\u9009\u62e9\uff1b
5. \u652f\u6301\u5355\u53c2\u6570\uff0c\u7701\u7565\u7b2c\u4e09\u4e2a\u53c2\u6570\u8868\u793a\u4e00\u81f4\u5230\u5b57\u7b26\u7ed3\u675f\u90fd\u8981\u9009\u4e2d\u3002<\/p>\n
\u4e94\u3001\u7ed3\u8bed<\/h3>\n
\u5c0f\u5c0f\u6548\u679c\u6709\u5927\u5927\u5b66\u95ee\uff0c\u5176\u4ed6\u6211\u5c31\u4e0d\u591a\u8bf4\u4e86\uff0c\u5e0c\u671b\u80fd\u5bf9\u60a8\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\u3002<\/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\uff1ahttp:\/\/www.zhangxinxu.com\/wordpress\/?p=755<\/a><\/p>\n
\uff08\u672c\u7bc7\u5b8c\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"
<\/a>
\n\u5728\u65b0\u6d6a\u5fae\u535a\u7684\u5fae\u535a\u4fe1\u606f\u53d1\u5e03\u6846\u4e0b\u9762\uff0c\u6709\u4e2a\u201c\u8bdd\u9898\u201d\u6309\u94ae\uff0c\u70b9\u51fb\u8fd9\u4e2a\u201c\u8bdd\u9898\u201d\u6587\u5b57\u6309\u94ae\u540e\uff0c\u5728\u8f93\u5165\u6846\u6587\u672c\u57df\u91cc\u9762\u5c31\u4f1a\u6dfb\u52a0\u4e00\u6bb5\u6587\u5b57\u201c#\u8bf7\u5728\u8fd9\u91cc\u8f93\u5165\u81ea\u5b9a\u4e49\u8bdd\u9898#\u201d\uff0c\u5176\u4e2d\u201c\u8bf7\u5728\u8fd9\u91cc\u8f93\u5165\u81ea\u5b9a\u4e49\u8bdd\u9898\u201d\u5904\u4e8e\u88ab\u9009\u4e2d\u7684\u72b6\u6001\uff0c\u8fd9\u6837\u7528\u6237\u65e0\u9700\u518d\u9009\u4e2d\u6587\u5b57\uff0c\u76f4\u63a5\u6572\u952e\u76d8\u5c31\u53ef\u4ee5\u66ff\u6362\u8fd9\u90e8\u5206\u5185\u5bb9\uff0c\u8fd9\u662f\u975e\u5e38\u597d\u7684\u4e00\u4e2a\u63d0\u9ad8\u7528\u6237\u4f53\u9a8c\u7684\u7ec6\u8282\u3002
\n\u672c\u6587\u5c31\u50cf\u8be6\u5c3d\u7684\u8bb2\u89e3\u8fd9\u79cd\u6548\u679c\u7684\u5b9e\u73b0\uff0c\u63d0\u4f9b\u8be6\u5c3d\u7684\u4ee3\u7801\u5c55\u793a\uff0c\u5fc5\u8981\u7684\u622a\u56fe\uff0c\u4ee5\u53cademo\u793a\u4f8b\u9875\u9762\uff0c\u5e0c\u671b\u80fd\u5bf9\u60a8\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[180],"tags":[375,132,13,1273,376,140,377,349,139],"_links":{"self":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/755"}],"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=755"}],"version-history":[{"count":0,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/755\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/media?parent=755"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/categories?post=755"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/tags?post=755"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}