{"id":5155,"date":"2016-01-09T22:15:55","date_gmt":"2016-01-09T14:15:55","guid":{"rendered":"http:\/\/www.zhangxinxu.com\/wordpress\/?p=5155"},"modified":"2018-01-10T00:00:50","modified_gmt":"2018-01-09T16:00:50","slug":"understand-css3-isolation-isolate","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2016\/01\/understand-css3-isolation-isolate\/","title":{"rendered":"\u7406\u89e3CSS3 isolation: isolate\u7684\u8868\u73b0\u548c\u4f5c\u7528"},"content":{"rendered":"

by zhangxinxu<\/a> from http:\/\/www.zhangxinxu.com<\/a>
\n\u672c\u6587\u5730\u5740\uff1ahttp:\/\/www.zhangxinxu.com\/wordpress\/?p=5155<\/a><\/p>\n

\u4e00\u3001\u5173\u4e8eisolation<\/h3>\n

isolation<\/code>\u662f\u4e00\u4e2aCSS3\u5c5e\u6027\uff0c\u987e\u540d\u601d\u610f\u662f\u201c\u9694\u79bb\u201d\uff0c\u652f\u6301\u7684\u503c\u9664\u4e86\u4e07\u5e74\u4e0d\u53d8\u7684inherit<\/code>\u5916\u8fd8\u5305\u62ecauto<\/code>\u548cisolate<\/code>.<\/p>\n

\u7ee7\u627f\u6ca1\u4ec0\u4e48\u597d\u8bf4\u7684\u3002auto<\/code>\u5b9e\u9645\u4e0a\u5c31\u662f\u4e0d\u5e72\u4e8b\u7684\u610f\u601d\uff0c\u662f\u5143\u7d20\u7684\u9ed8\u8ba4\u503c\u3002\u6240\u4ee5\uff0c\u6211\u4eec\u53ea\u9700\u8981\u5173\u5fc3isolation: isolate<\/code>\u8fd9\u4e2a\u58f0\u660e\u5c31\u597d\u4e86\u3002<\/p>\n

isolation: isolate<\/code>\u6b63\u5982\u5176\u8bed\u4e49\uff0c\u5c31\u662f\u9694\u79bb\u7684\u610f\u601d\uff0c\u90a3\u9694\u79bb\u4ec0\u4e48\u5462\uff1f\u672c\u4e49\u662f\u7528\u6765\u9694\u79bbmix-blend-mode<\/code>\u5143\u7d20\u7684\u6df7\u5408\u3002<\/p>\n

\u5173\u4e8emix-blend-mode<\/code>\u6df7\u5408\u6a21\u5f0f\u53ef\u4ee5\u53c2\u8003\u6211\u4e4b\u524d\u7684\u6587\u7ae0\uff1a\u201cCSS3\u6df7\u5408\u6a21\u5f0fmix-blend-mode\u7b80\u4ecb<\/a>\u201d\u3002<\/p>\n

\u5f53\u5143\u7d20\u5e94\u7528\u4e86\u6df7\u5408\u6a21\u5f0f\u7684\u65f6\u5019\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u5176\u4f1a\u6df7\u5408z\u8f74\u4e0a\u6240\u6709\u5c42\u53e0\u987a\u5e8f\u6bd4\u5176\u4f4e\u7684\u5c42\u53e0\u5143\u7d20\u3002<\/p>\n

\u4f46\u662f\uff0c\u6709\u65f6\u5019\uff0c\u6211\u4eec\u5e0c\u671b\u6df7\u5408\u6a21\u5f0f\u53ea\u5230\u67d0\u4e00\u4e2a\u5143\u7d20\uff0c\u6216\u8005\u53ea\u662f\u67d0\u4e00\u7ec4\u5143\u7d20\u600e\u4e48\u529e\u5462\uff1fisolation: isolate<\/code>\u5c31\u662f\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u4ea7\u751f\u7684\u3002<\/p>\n

\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1aisolation: isolate\u4f5c\u7528\u6f14\u793ademo<\/a><\/p>\n

\u5982\u4e0bCSS\u548cHTML\u7ed3\u6784\uff1a<\/p>\n

\n
.box {\n    background-color: #0074D9;\n}\n.inner {\n    width: 256px;\n    height: 256px;\n    background: url(mm1.jpg) no-repeat;    \n}\n.mode {\n    position: relative;\n    right: -100px;\n    mix-blend-mode: darken;\t\n}<\/pre>\n<\/div>\n
\n
<div class=\"box\">\n    <div class=\"inner\">\n        <img src=\"mm2.jpg\" class=\"mode\">\n    <\/div>\n<\/div><\/pre>\n<\/div>\n
\u6b64\u65f6\uff0cmm2\u8fd9\u4e2a\u7ad6\u59b9\u5b50\u4e0d\u4ec5\u548cmm1\u6a2a\u59b9\u5b50\u53d1\u751f\u4e86\u6df7\u5408\uff0c\u8fd8\u548c\u84dd\u8272\u7684\u80cc\u666f\u8272\u53d1\u751f\u4e86\u6df7\u5408\u3002<\/p>\n
\"\u6df7\u5408\u6a21\u5f0f\u793a\u610f\"<\/p>\n
\u7136\u540e\uff0c\u6211\u4eec\u60f3\u8981\u5b9e\u73b0\u7684\u6548\u679c\u662f\uff0c\u4ec5\u4ec5\u4e24\u5f20\u56fe\u7247\u53d1\u751f\u6df7\u5408\uff0c\u8fd9\u65f6\u5019\u5e94\u8be5\u600e\u4e48\u529e\uff1f<\/p>\n
\u6b64\u65f6\u5c31\u53ef\u4ee5\u4f7f\u7528isolation:isolate<\/code>\u8fdb\u884c\u963b\u65ad\uff0c\u5f62\u6210\u4e00\u4e2a\u6df7\u5408\u7ec4\u3002\u7ec4\u4ee5\u5916\u7684\u5176\u4ed6\u5143\u7d20\u4e0d\u4f1a\u53d1\u751f\u5c42\u53e0\u3002<\/p>\n
\u6240\u4ee5\uff0c\u4f8b\u5982\uff0c\u70b9\u51fbdemo\u9875\u9762\u7684\u6309\u94ae\uff0c\u7ed9.inner<\/code>\u8fd9\u5c42div<\/code>\u5143\u7d20\u589e\u52a0isolation:isolate<\/code>\uff0c \u5927\u5bb6\u4f1a\u53d1\u73b0\uff0cmm2\u8fd9\u4e2a\u7ad6\u59b9\u5b50\u6ca1\u6709\u548c\u84dd\u8272\u80cc\u666f\u8272\u53d1\u751f\u6df7\u5408\uff0c\u5982\u4e0b\u622a\u56fe\uff1a<\/p>\n
\"isolation:isolate\u963b\u9694\u540e\u7684\u6548\u679c\u622a\u56fe\"<\/p>\n
\u4e8c\u3001isolation:isolate\u4f5c\u7528\u7684\u539f\u7406<\/h3>\n
isolation:isolate<\/code>\u4e4b\u6240\u4ee5\u53ef\u4ee5\u963b\u65ad\u6df7\u5408\u6a21\u5f0f\u7684\u8fdb\u884c\uff0c\u672c\u8d28\u4e0a\u662f\u56e0\u4e3aisolation:isolate<\/code>\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5c42\u53e0\u4e0a\u4e0b\u6587(stacking context)<\/a>\u3002<\/p>\n
\u6ca1\u9519\uff0c\u4e4b\u6240\u4ee5\u8d77\u4f5c\u7528\uff0c\u5c31\u662f\u5355\u7eaf\u5730\u56e0\u4e3a\u521b\u5efa\u4e86\u65b0\u7684\u5c42\u53e0\u4e0a\u4e0b\u6587\u3002\u672c\u8eab\u5e76\u6ca1\u6709\u505a\u4ec0\u4e48\u7279\u6b8a\u7684\u4e8b\u60c5\u3002\u6216\u8005\u6211\u53ef\u4ee5\u8fd9\u4e48\u5927\u80c6\u7684\u8bf4\uff1a\u201cisolation:isolate<\/code>\u9664\u4e86\u521b\u5efa\u5c42\u53e0\u4e0a\u4e0b\u6587\uff0c\u5176\u4ed6\u6ca1\u6709\u4efb\u4f55\u9e1f\u7528\uff01\u201d<\/p>\n
\u53ef\u80fd\u6709\u4eba\u4f1a\u7591\u95ee\uff0c\u5982\u679c\u6309\u7167\u4f60\u7684\u8bf4\u6cd5\uff0c\u5c82\u4e0d\u662f\u4efb\u4f55\u53ef\u4ee5\u521b\u5efa\u5c42\u53e0\u4e0a\u4e0b\u6587\u7684\u5c5e\u6027\u90fd\u53ef\u4ee5\u963b\u65admix-blend-mode<\/code>\u7684\u751f\u6548\uff1f<\/p>\n
\u6ca1\u9519\uff0c\u5c31\u662f\u8fd9\u6837\u5b50\u7684\uff01<\/p>\n
\u53ea\u8981\u5143\u7d20\u53ef\u4ee5\u521b\u5efa\u5c42\u53e0\u4e0a\u4e0b\u6587\uff0c\u5c31\u53ef\u4ee5\u963b\u65admix-blend-mode\uff01<\/strong><\/p>\n
\u4e8e\u662f\uff0c\u4e0d\u4ec5\u4ec5\u662fisolation:isolate<\/code>\uff0c\u4e0b\u9762\u8fd9\u4e9b\u4e5f\u662f\u53ef\u4ee5\u7684\uff1a<\/p>\n
    \n
  1. z-index<\/code>\u503c\u4e0d\u4e3aauto<\/code>\u7684position:relative<\/code>\/position:absolute<\/code>\u5b9a\u4f4d\u5143\u7d20\u3002<\/li>\n
  2. position:fixed<\/code>\uff0c\u4ec5\u9650Chrome\u6d4f\u89c8\u5668\uff0c\u5176\u4ed6\u6d4f\u89c8\u5668\u9075\u5faa\u4e0a\u4e00\u6761\uff0c\u9700\u8981z-index<\/code>\u4e3a\u6570\u503c\u3002<\/li>\n
  3. z-index<\/code>\u503c\u4e0d\u4e3aauto<\/code>\u7684flex<\/code>\u9879(\u7236\u5143\u7d20display:flex|inline-flex<\/code>).<\/li>\n
  4. \u5143\u7d20\u7684opacity<\/code>\u503c\u4e0d\u662f1<\/code>.<\/li>\n
  5. \u5143\u7d20\u7684transform<\/code>\u503c\u4e0d\u662fnone<\/code>.<\/li>\n
  6. \u5143\u7d20mix-blend-mode<\/code>\u503c\u4e0d\u662fnormal<\/code>.<\/li>\n
  7. \u5143\u7d20\u7684filter<\/code>\u503c\u4e0d\u662fnone<\/code>.<\/li>\n
  8. will-change<\/code>\u6307\u5b9a\u7684\u5c5e\u6027\u503c\u4e3a\u4e0a\u9762\u4efb\u610f\u4e00\u4e2a\u3002<\/li>\n
  9. \u5143\u7d20\u7684-webkit-overflow-scrolling<\/code>\u8bbe\u4e3atouch<\/code>.<\/li>\n<\/ol>\n
    \u773c\u89c1\u4e3a\u5b9e\uff0c\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a\u5c42\u53e0\u4e0a\u4e0b\u6587\u4e0e\u6df7\u5408\u6a21\u5f0f\u963b\u9694\u6d4b\u8bd5demo<\/a><\/p>\n
    \u9009\u62e9\u4efb\u610f\u4e00\u6b3e\u5c42\u53e0\u4e0a\u4e0b\u6587\uff0c\u5927\u5bb6\u90fd\u53ef\u4ee5\u611f\u53d7\u5230\u5bf9mix-blend-mode<\/code>\u7684\u963b\u9694\uff0c\u4f8b\u5982\uff1a<\/p>\n
    \"\u5c42\u53e0\u4e0a\u4e0b\u6587\u4e0e\u6df7\u5408\u6a21\u5f0f\u7684\u963b\u9694\"<\/p>\n
    \u4e09\u3001\u5173\u4e8ebackground-blend-mode<\/h3>\n
    \u6df7\u5408\u6a21\u5f0f\u9886\u57df\u8fd8\u6709\u4e00\u4e2a\u91cd\u8981\u7684\u5bb6\u4f19\u5c31\u662fbackground-blend-mode<\/code>, \u80cc\u666f\u6df7\u5408\u6a21\u5f0f\u3002\u90a3\u8fd9\u4e2aCSS\u5c5e\u6027\u9700\u8981isolation:isolate<\/code>\u8fdb\u884c\u963b\u9694\u5417\uff1f\u7b54\u6848\u662f\u4e0d\u9700\u8981\u3002background-blend-mode<\/code>\u5929\u751f\u662f\u4e00\u4e2a\u5c01\u95ed\u7684\u6df7\u5408\u9886\u57df\uff0c\u4e0d\u4f1a\u5f71\u54cd\u5176\u4ed6\u5143\u7d20\u3002<\/p>\n
    \u4ee5\u4e0a~<\/p>\n
    \u56db\u3001\u7ed3\u675f\u8bed<\/h3>\n
    \u7531\u6b64\u770b\u6765\uff0cCSS3\u4e0d\u4ec5\u4ec5\u662f\u589e\u52a0\u4e86\u4e00\u4e9b\u8868\u73b0\u5c42\u7684\u4e1c\u897f\uff0c\u7c7b\u4f3c\u5c42\u53e0\u4e0a\u4e0b\u6587\u8fd9\u6837\u7684\u6982\u5ff5\u53d8\u5f97\u66f4\u52a0\u539a\u91cd\u4e86\uff0c\u5176\u80cc\u540e\u7684\u5f88\u591a\u4ea4\u7ec7\u5728\u4e00\u8d77\u7684\u5173\u7cfb\u4e5f\u6bd4\u60f3\u8c61\u7684\u590d\u6742\uff0c\u4f46\u662f\u53c8\u662f\u4e92\u76f8\u9a8c\u8bc1\u7684\u4f53\u7cfb\u3002<\/p>\n
    CSS\u7684\u5b66\u4e60\u8fd8\u662f\u76f8\u5f53\u4efb\u91cd\u9053\u8fdc\u7684\u3002<\/p>\n
     <\/p>\n
    \u672c\u6587\u4e3a\u539f\u521b\u6587\u7ae0\uff0c\u5305\u542b\u811a\u672c\u884c\u4e3a\uff0c\u4f1a\u7ecf\u5e38\u66f4\u65b0\u77e5\u8bc6\u70b9\u4ee5\u53ca\u4fee\u6b63\u4e00\u4e9b\u9519\u8bef\uff0c\u56e0\u6b64\u8f6c\u8f7d\u8bf7\u4fdd\u7559\u539f\u51fa\u5904\uff0c\u65b9\u4fbf\u6eaf\u6e90\uff0c\u907f\u514d\u9648\u65e7\u9519\u8bef\u77e5\u8bc6\u7684\u8bef\u5bfc\uff0c\u540c\u65f6\u6709\u66f4\u597d\u7684\u9605\u8bfb\u4f53\u9a8c\u3002
    \n\u672c\u6587\u5730\u5740\uff1a    http:\/\/www.zhangxinxu.com\/wordpress\/?p=5155<\/a><\/p>\n
    \uff08\u672c\u7bc7\u5b8c\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u5982\u9898\uff0c\u7406\u89e3CSS3 isolation: isolate\u7684\u8868\u73b0\u548c\u4f5c\u7528\uff0cisolation: isolate\u662f\u4e00\u4e2a\u4e0eCSS3\u6df7\u5408\u6a21\u5f0f\u5173\u7cfb\u5bc6\u5207\u7684\u4e00\u4e2aCSS\u58f0\u660e\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[1039,994],"_links":{"self":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/5155"}],"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=5155"}],"version-history":[{"count":0,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/5155\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/media?parent=5155"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/categories?post=5155"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/tags?post=5155"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}