{"id":2608,"date":"2016-01-06T14:04:54","date_gmt":"2016-01-06T06:04:54","guid":{"rendered":"http:\/\/www.hiheng.com\/blog\/?p=2608"},"modified":"2016-01-07T13:55:21","modified_gmt":"2016-01-07T05:55:21","slug":"%e6%8f%90%e5%89%8d%e9%80%9a%e7%9f%a5%e6%b5%8f%e8%a7%88%e5%99%a8%e5%81%9a%e7%a1%ac%e4%bb%b6%e5%8a%a0%e9%80%9f%ef%bc%88css-will-change-%e5%b1%9e%e6%80%a7%ef%bc%89","status":"publish","type":"post","link":"http:\/\/www.hiheng.com\/blog\/?p=2608","title":{"rendered":"\u63d0\u524d\u901a\u77e5\u6d4f\u89c8\u5668\u505a\u786c\u4ef6\u52a0\u901f\uff08CSS will-change \u5c5e\u6027\uff09"},"content":{"rendered":"

CSS will-change \u5c5e\u6027\u4ecb\u7ecd<\/strong><\/p>\n

\u5982\u679c\u4f60\u6ce8\u610f\u5230\u5728webkit\u7684\u6d4f\u89c8\u5668\u4e0a\u201cflicker\u201d\u4e00\u4e9bCSS\u64cd\u4f5c\uff08\u5c24\u5176\u662f\u53d8\u5f62\u548c\u52a8\u753b\u65b9\u9762\u7684\uff09\u7684\u8868\u73b0\uff0c\u4f60\u5f88\u53ef\u80fd\u4e4b\u524d\u5c31\u6ce8\u610f\u8fc7\u786c\u4ef6\u52a0\u901f\u4e86<\/p>\n

CPU\u3001GPU\u548c\u786c\u4ef6\u52a0\u901f<\/strong><\/p>\n

\u786c\u4ef6\u52a0\u901f\u610f\u5473\u7740Graphics Processing Unit\uff08GPU\uff09\u4f1a\u901a\u8fc7\u4ee3\u66ffCentral Processing Unit (CPU)\u505a\u4e00\u4e9b\u8d1f\u8377\u6bd4\u8f83\u5927\u7684\u4e8b\u60c5\uff0c\u6765\u534f\u52a9\u6d4f\u89c8\u5668\u5feb\u901f\u6e32\u67d3\u9875\u9762\uff0c\u5f53CSS\u64cd\u4f5c\u4f7f\u7528\u786c\u4ef6\u52a0\u901f\u7684\u65f6\u5019\uff0c\u901a\u5e38\u4f1a\u4f7f\u9875\u9762\u6e32\u67d3\u901f\u5ea6\u52a0\u5feb<\/p>\n

\u987e\u540d\u601d\u4e49\uff0cCPU\u548cGPU\u90fd\u662f\u8ba1\u7b97\u673a\u5904\u7406\u5355\u5143\u3002CPU\u5728\u7535\u8111\u4e3b\u677f\uff0c\u51e0\u4e4e\u5904\u7406\u7535\u8111\u7684\u4e00\u5207\u64cd\u4f5c\uff0c\u6709\u7535\u8111\u5927\u8111\u4e4b\u79f0\uff1bGPU\u5728\u663e\u5361\u4e0a\uff0c\u8d1f\u8d23\u5904\u7406\u548c\u6e32\u67d3\u56fe\u5f62\u3002\u6b64\u5916GPU\u901a\u8fc7\u7279\u6b8a\u7684\u8bbe\u8ba1\uff0c\u4f7f\u5176\u64c5\u957f\u4e8e\u6e32\u67d3\u56fe\u5f62\u6240\u9700\u7684\u6570\u5b66\u548c\u51e0\u4f55\u8fd0\u7b97\u3002\u56e0\u6b64\u628a\u64cd\u4f5c\u8f6c\u5ac1\u5230GPU\u53ef\u4ee5\u83b7\u5f97\u663e\u8457\u7684\u6027\u80fd\u63d0\u5347\uff0c\u540c\u65f6\u4e5f\u53ef\u4ee5\u51cf\u5c11\u79fb\u52a8\u8bbe\u5907CPU\u7684\u4e89\u7528\u3002<\/p>\n

\u786c\u4ef6\u52a0\u901f\uff08\u6216\u8005\u8bf4GPU\u52a0\u901f\uff09\u4f9d\u8d56\u4e8e\u6d4f\u89c8\u5668\u6e32\u67d3\u9875\u9762\u4f7f\u7528\u7684layering model\uff0c\u5f53\u7279\u5b9a\u7684\u64cd\u4f5c\uff08CSS 3D\u53d8\u5f62\uff09\u4f5c\u7528\u4e8e\u9875\u9762\u4e0a\u7684\u4e00\u4e2a\u5143\u7d20\uff0c\u5143\u7d20\u79fb\u52a8\u5230\u5b83\u81ea\u5df1\u7684layer\uff0c\u5728\u8fd9\u4e2alayer\u4e2d\u5143\u7d20\u5408\u4e00\u4e0d\u53d7\u9875\u9762\u5176\u4ed6\u5143\u7d20\u7684\u5e72\u6270\u72ec\u7acb\u6e32\u67d3\uff0c\u7136\u540e\u590d\u5408\u5230\u9875\u9762\u4e2d\u53bb\u3002\u5728\u8fd9\u79cd\u9694\u79bb\u5185\u5bb9\u6e32\u67d3\u7684\u5de5\u4f5c\u65b9\u5f0f\u4e0b\uff0c\u5982\u679c\u9875\u9762\u7684\u53d8\u5316\u4ec5\u4ec5\u662f\u8be5\u5143\u7d20\u7684\u53d8\u5f62\uff0c\u5176\u4f59\u90e8\u5206\u4e0d\u5fc5\u88ab\u91cd\u65b0\u6e32\u67d3\uff0c\u8fd9\u4f1a\u5e26\u6765\u663e\u8457\u7684\u901f\u5ea6\u4f18\u52bf\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662f\u53ea\u67093D\u53d8\u5f62\u4f1a\u6709\u81ea\u5df1\u7684layer\uff0c2D\u53d8\u5f62\u4e0d\u4f1a\u3002<\/p>\n

CSS\u7684\u52a8\u753b\u3001\u53d8\u5f62\u3001\u6e10\u53d8\u5e76\u4e0d\u4f1a\u81ea\u52a8\u7684\u89e6\u53d1GPU\u52a0\u901f\uff0c\u800c\u662f\u4f7f\u7528\u6d4f\u89c8\u5668\u7a0d\u6162\u7684\u8f6f\u4ef6\u6e32\u67d3\u5f15\u64ce\u3002\u7136\u800c\u4e00\u4e9b\u6d4f\u89c8\u5668\u63d0\u4f9b\u4e86hardware acceleration by means of certain properties\u6765\u83b7\u53d6\u66f4\u9ad8\u7684\u6e32\u67d3\u6027\u80fd\u3002 \u4e3e\u4e2a\u4f8b\u5b50\uff0copacity\u5c5e\u6027\u662f\u51e0\u4e2a\u80fd\u591f\u52a0\u901f\u7684\u5c5e\u6027\u4e4b\u4e00\uff0c\u56e0\u4e3aGPU\u53ef\u4ee5\u65b9\u4fbf\u7684\u5904\u7406\u3002\u57fa\u672c\u4e0a\u4efb\u4f55\u5c42\u7684\u900f\u660e\u5ea6\u6e10\u53d8\u6d4f\u89c8\u5668\u90fd\u4f1a\u4ea4\u7ed9GPU\u5904\u7406\u6765\u52a0\u901f\u3002\u9664\u4e86opacity\u80fd\u591f\u4f7f\u7528GPU\u5904\u7406\u7684\u5c31\u662fCSS 3D\u53d8\u5f62\u4e86<\/p>\n

translateZ() (or translate3d()) Hack<\/p>\n

\u5f88\u957f\u4e00\u6bb5\u65f6\u95f4\u5185\u6211\u4eec\u90fd\u901a\u8fc7translateZ()\u6216\u8005translate3d() hack\u6765\u9a97\u53d6\u6d4f\u89c8\u5668\u89e6\u53d1\u786c\u4ef6\u52a0\u901f\uff0c\u5177\u4f53\u505a\u6cd5\u5c31\u662f\u4e3a\u5143\u7d20\u6dfb\u52a0\u6ca1\u6709\u53d8\u5316\u76843D\u53d8\u5f62\uff0c\u6bd4\u5982\u5143\u7d20\u57282\u7ef4\u7a7a\u95f4\u53ef\u4ee5\u901a\u8fc7\u6dfb\u52a0\u4ee5\u4e0bCSS\u6765\u786c\u4ef6\u52a0\u901f<\/p>\n

transform: translate3d(0, 0, 0);
\n\u6240\u8c13\u786c\u4ef6\u52a0\u901f\u5c31\u662f\u521b\u5efa\u4e86\u4e00\u4e2a\u88ab\u4f20\u9012\u5230GPU\u5904\u7406\u7684\u5c42\u7684\u64cd\u4f5c\uff0c\u7136\u800c\u5f3a\u5236\u4f7f\u7528hack\u65b9\u5f0f\u521b\u5efalayer\u5e76\u4e0d\u662f\u957f\u4e45\u4e4b\u8ba1\uff0c\u521b\u5efalayer\u7684\u6280\u672f\u53ef\u4ee5\u4f7f\u9875\u9762\u52a0\u901f\uff0c\u4f46\u662f\u4e5f\u6709\u4ee3\u4ef7\uff1a\u5b83\u4eec\u5360\u7528RAM\u548cGPU\u5b58\u50a8\u7a7a\u95f4\uff08\u8003\u8651\u5230\u79fb\u52a8\u8bbe\u5907\u7684\u5b58\u50a8\u5bb9\u91cf\u6709\u9650\uff09\uff0c\u6240\u4ee5\u5fc5\u987b\u5457\u5c0f\u5fc3\u4f7f\u7528\uff0c\u786e\u4fdd\u8fd9\u4e48\u505a\u771f\u7684\u5bf9\u9875\u9762\u6e32\u67d3\u6709\u6240\u5e2e\u52a9<\/p>\n

\u4e3a\u4e86\u907f\u514d\u521b\u5efalayer\u7684hacks\uff0c\u4e00\u4e2a\u5141\u8bb8\u6211\u4eec\u63d0\u524d\u901a\u77e5\u6d4f\u89c8\u5668\u6211\u4eec\u5c06\u5bf9\u5143\u7d20\u505a\u4f55\u79cd\u53d8\u5316\u7684CSS\u5c5e\u6027\u88ab\u5f15\u5165\uff0c\u8fd9\u6837\u6d4f\u89c8\u5668\u53ef\u4ee5\u4f18\u5316\u5904\u7406\u5143\u7d20\u6e32\u67d3\u7684\u65b9\u5f0f\uff0c\u4e3a\u5143\u7d20\u63d0\u524d\u51c6\u5907\u6602\u8d35\u7684\u52a8\u753b\u5904\u7406\u64cd\u4f5c\uff0c\u8fd9\u5c31\u662fwiil-change\u5c5e\u6027<\/p>\n

\u725b\u903c\u7684 will-change\u5c5e\u6027<\/strong><\/p>\n

will-change\u5c5e\u6027\u53ef\u4ee5\u63d0\u524d\u901a\u77e5\u6d4f\u89c8\u5668\u6211\u4eec\u8981\u5bf9\u5143\u7d20\u505a\u4ec0\u4e48\u52a8\u753b\uff0c\u8fd9\u6837\u6d4f\u89c8\u5668\u53ef\u4ee5\u63d0\u524d\u51c6\u5907\u5408\u9002\u7684\u4f18\u5316\u8bbe\u7f6e\u3002\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u5bf9\u9875\u9762\u54cd\u5e94\u901f\u5ea6\u6709\u91cd\u8981\u5f71\u54cd\u7684\u6602\u8d35\u6210\u672c\u3002\u5143\u7d20\u53ef\u4ee5\u66f4\u5feb\u7684\u88ab\u6539\u53d8\uff0c\u6e32\u67d3\u7684\u4e5f\u66f4\u5feb\uff0c\u8fd9\u6837\u9875\u9762\u53ef\u4ee5\u5feb\u901f\u66f4\u65b0\uff0c\u8868\u73b0\u7684\u66f4\u52a0\u6d41\u7545\u3002<\/p>\n

\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u5f53\u5bf9\u4e8e\u7d20\u4f7f\u7528 CSS 3D\u53d8\u5f62\u65f6\uff0c\u5143\u7d20\u53ca\u5176\u5185\u5bb9\u53ef\u4ee5\u5728\u5408\u6210\u5230\u9875\u9762\u4e4b\u524d\u88ab\u521b\u5efa\u5230\u6211\u4eec\u4e4b\u524d\u8bf4\u7684layer\u3002\u7136\u800c\u628a\u5143\u7d20\u653e\u5230layer\u4e2d\u662f\u4e2a\u6602\u8d35\u7684\u64cd\u4f5c\uff0c\u8fd9\u5c06\u4f1a\u5bfc\u81f4\u53d8\u5f62\u52a8\u753b\u5ef6\u8fdf\u4e00\u4e2a\u8bfe\u4ef6\u7684\u77ac\u95f4\uff0c\u4e5f\u5c31\u662fflicker<\/p>\n

\u4e3a\u4e86\u907f\u514d\u8fd9\u79cd\u5ef6\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u53d1\u751f\u4e4b\u524d\u901a\u77e5\u6d4f\u89c8\u5668\uff0c\u8fd9\u6837\u6d4f\u89c8\u5668\u4f1a\u6709\u4e00\u5b9a\u7684\u65f6\u95f4\u53bb\u51c6\u5907\u8fd9\u4e9b\u53d8\u5316\uff0c\u5f53\u53d1\u751f\u7684\u65f6\u5019layer\u5df2\u7ecf\u51c6\u5907\u597d\u4e86\uff0c\u8fd9\u6837\u52a8\u753b\u9152\u4f1a\u5f88\u6d41\u7545\uff0c\u4e0d\u4f1a\u95ea\u5c4f<\/p>\n

\u4f7f\u7528will-change\u63d0\u793a\u6d4f\u89c8\u5668\u5173\u4e8e\u5373\u5c06\u53d1\u751f\u7684\u53d8\u5f62\u5341\u5206\u7b80\u5355\uff0c\u6dfb\u52a0\u4e2aCSS\u5c5e\u6027\u5c31\u884c<\/p>\n

will-change: transform;
\n\u4e5f\u53ef\u4ee5\u544a\u8bc9\u6d4f\u89c8\u5668\u8981\u6539\u53d8\u5143\u7d20\u7684\u6eda\u52a8\u6761\u4f4d\u7f6e\uff0c\u6216\u8005\u591a\u4e2a\u8981\u53d8\u5316\u7684\u5c5e\u6027\uff0c\u5199\u4e0b\u5c5e\u6027\u7684\u540d\u5b57\u5c31\u884c\uff0c\u4e5f\u53ef\u4ee5\u5199\u591a\u4e2a\uff0c\u9017\u53f7\u9694\u5f00<\/p>\n

will-change: transform, opacity;
\n\u58f0\u660e\u4e86\u5143\u7d20\u5373\u5c06\u8fdb\u884c\u7684\u53d8\u5316\u4f1a\u8ba9\u6d4f\u89c8\u5668\u5728\u6e32\u67d3\u9875\u9762\u65f6\u505a\u66f4\u597d\u7684\u51b3\u5b9a\uff0c\u8fd9\u660e\u663e\u6bd4\u4e4b\u524d\u8bf4\u76843D hacks\u8981\u597d\u3002<\/p>\n

\u5408\u7406\u4f7f\u7528<\/strong><\/p>\n

\u4e86\u89e3\u4e86will-change\u7684\u884c\u4e3a\uff0c\u4e3a\u6d4f\u89c8\u5668\u4e0a\u4e00\u5207\u5143\u7d20\u8bbe\u7f6ewill-change\u662f\u4e0d\u662f\u6548\u7387\u4f1a\u53d8\u9ad8\uff1f\u7b54\u6848\u662f\u5426\u5b9a\u7684\uff0cwill-change\u5982\u679c\u88ab\u6ee5\u7528\u4f1a\u4f7f\u9875\u9762\u5d29\u6e83\u3002<\/p>\n

will-change\u4e5f\u6709\u526f\u4f5c\u7528\uff0c\u867d\u7136\u5e76\u4e0d\u76f4\u63a5\u53ef\u89c1\uff0c\u6bd5\u7adf\u5b83\u53ea\u662f\u5728\u80cc\u540e\u548c\u6d4f\u89c8\u5668\u8bf4\u6084\u6084\u8bdd\uff0c\u4e3a\u4e86\u5408\u7406\u4f7f\u7528will-change\uff0c\u7ed9\u4e00\u4e9b\u5c0f\u5efa\u8bae<\/p>\n

\u4e0d\u8981\u58f0\u660e\u592a\u591a\u5c5e\u6027\u6216\u4e3a\u592a\u591a\u5143\u7d20\u58f0\u660e<\/p>\n

*,
\n*::before,
\n*::after {
\nwill-change: all;
\n}
\n\u867d\u7136\u770b\u8d77\u6765\u5f88\u5c4c\uff0c\u4f46\u5176\u5b9e\u5bf9\u9875\u9762\u6e32\u67d3\u4f24\u5bb3\u5f88\u5927\uff0c\u8fd9\u6837\u7684\u89c4\u5219\u8bbe\u4e86\u548c\u6ca1\u8bbe\u6ca1\u4ec0\u4e48\u533a\u522b\uff0c\u6d4f\u89c8\u5668\u672c\u6765\u5c31\u5c1d\u8bd5\u6700\u4f18\u7684\u6e32\u67d3\u6240\u6709\u5143\u7d20\uff0c\u5c31\u7b49\u4e8e\u4f60\u8ba9\u8001\u5e08\u91cd\u70b9\u7167\u987e\u73ed\u91cc\u6bcf\u4e2a\u540c\u5b66\u4e00\u6837\uff0c\u5c31\u662f\u5e9f\u8bdd\uff01<\/p>\n

\u5176\u5b9e\u8fd9\u751a\u81f3\u662f\u6709\u5bb3\u7684\uff0c\u56e0\u4e3a\u4e00\u4e9b\u64cd\u4f5c\u4f1a\u5360\u7528\u592a\u591a\u7684\u8d44\u6e90\uff0c\u751a\u81f3\u4f1a\u5bfc\u81f4\u9875\u9762\u5954\u6e83\uff0c\u5c31\u7b49\u4e8e\u5f3a\u5236\u8981\u6c42\u8001\u5e08\u4e3a\u6bcf\u4e2a\u5b66\u751f\u8865\u8bfe\uff0c\u7d2f\u6b7b\u4e86\u3002\u3002\u3002<\/p>\n

\u7ed9\u6d4f\u89c8\u5668\u8db3\u591f\u7684\u65f6\u95f4\u5de5\u4f5c<\/strong><\/p>\n

will-change\u987e\u540d\u601d\u4e49\uff0c\u901a\u77e5\u6d4f\u89c8\u5668\u5373\u5c06\u53d1\u751f\u7684\u53d8\u5316\uff0c\u800c\u4e0d\u662f\u6b63\u5728\u53d1\u751f\u7684\u53d8\u5316\u3002\u4f7f\u7528will-change\uff0c\u6211\u4eec\u8981\u6c42\u6d4f\u89c8\u5668\u91cd\u70b9\u7167\u987e\u6211\u4eec\u58f0\u660e\u7684\u5143\u7d20\uff0c\u4e3a\u4e86\u8fd9\u4e2a\u6d4f\u89c8\u5668\u9700\u8981\u4e00\u5b9a\u7684\u65f6\u95f4\u6765\u7ec4\u7ec7\u4f18\u5316\u64cd\u4f5c\uff0c\u8fd9\u6837\u5f53\u53d8\u5316\u53d1\u751f\u7684\u65f6\u5019\uff0c\u4f18\u5316\u624d\u80fd\u6ca1\u6709\u5ef6\u8fdf\u7684\u4f5c\u7528\u5230\u5143\u7d20<\/p>\n

\u5728\u53d8\u5316\u524d\u7acb\u5373\u4e3a\u5143\u7d20\u6dfb\u52a0will-change\u51e0\u4e4e\u6ca1\u6709\u4f5c\u7528\uff0c\u53ef\u80fd\u8fd8\u4e0d\u5982\u4e0d\u8bbe\u7f6e\uff0c\u56e0\u4e3a\u4f1a\u5bfc\u81f4\u65b0\u7684layer\u521b\u5efa<\/p>\n

.element:hover {
\nwill-change: transform;
\ntransition: transform 2s;
\ntransform: rotate(30deg) scale(1.5);
\n}
\n\u8fd9\u6837\u7684\u8bbe\u7f6e\u5c31\u6ca1\u4ec0\u4e48\u7528\uff0c\u6211\u4eec\u9700\u8981\u7ed9\u6d4f\u89c8\u5668\u8db3\u591f\u7684\u65f6\u95f4\uff0c\u4e0b\u9762\u8fd9\u6837\u5c31\u662f\u6709\u7528\u7684\uff0c\u611f\u53d7\u4e00\u4e0b<\/p>\n

.element {
\n\/* style rules *\/
\ntransition: transform 1s ease-out;
\n}
\n.element:hover {
\nwill-change: transform;
\n}
\n.element:active {
\ntransform: rotateY(180deg);
\n}
\n\u5982\u679c\u4e00\u5b9a\u8981hover\u7684\u65f6\u5019\uff0c\u4e5f\u6709\u6280\u5de7<\/p>\n

.element {
\ntransition: opacity .3s linear;
\n}
\n\/* declare changes on the element when the mouse enters \/ hovers its ancestor *\/
\n.ancestor:hover .element {
\nwill-change: opacity;
\n}
\n\/* apply change when element is hovered *\/
\n.element:hover {
\nopacity: .5;
\n}
\n\u5176\u5b9e\u6838\u5fc3\u601d\u60f3\u5c31\u662f\u8ba9\u6d4f\u89c8\u5668\u6709\u65f6\u95f4\u53bb\u51c6\u5907<\/p>\n

\u53d8\u5316\u5b8c\u6210\u540e\u79fb\u9664will-change<\/p>\n

\u5bf9\u4e8e\u4e00\u822c\u7684\u4f18\u5316\uff0c\u5f53\u53d8\u5316\u5b8c\u6210\u7684\u65f6\u5019\u6d4f\u89c8\u5668\u4f1a\u64a4\u9500\u4f18\u5316\uff0c\u6062\u590d\u666e\u901a\u6a21\u5f0f\uff0c\u4f46\u662f\u5982\u679c\u4f7f\u7528\u4e86will-change\u4f1a\u5bfc\u81f4\u8be5\u4f18\u5316\u8fdf\u8fdf\u4e0d\u80fd\u91ca\u653e\uff0c\u8fd9\u5c31\u8981\u6c42\u6211\u4eec\u7528\u5b8c\u4e86\u5c31\u91ca\u653e<\/p>\n

\u8fd9\u65f6\u5019\u6211\u4eec\u9700\u8981\u501f\u52a9JavaScript<\/p>\n

\/\/ Rough generic example
\n\/\/ Get the element that is going to be animated on click, for example
\nvar el = document.getElementById(‘element’);<\/p>\n

\/\/ Set will-change when the element is hovered
\nel.addEventListener(‘mouseenter’, hintBrowser);
\nel.addEventListener(‘animationEnd’, removeHint);<\/p>\n

function hintBrowser() {
\n\/\/ The optimizable properties that are going to change
\n\/\/ in the animation’s keyframes block
\nthis.style.willChange = ‘transform, opacity’;
\n}<\/p>\n

function removeHint() {
\nthis.style.willChange = ‘auto’;
\n}
\n\u5f53\u7136\u5bf9\u4e8e\u7528\u6237\u4f1a\u53cd\u590d\u89e6\u53d1\u7684\u64cd\u4f5c\u653e\u5728style\u4e2d\u4e0d\u79fb\u9664\u4e5f\u53ef\u4ee5<\/p>\n

will-change\u5c5e\u6027\u7684\u503c<\/p>\n

auto \u8868\u793a\u6ca1\u6709\u660e\u786e\u7684\u610f\u56fe; \u65e0\u8bba\u662f\u542f\u53d1\u5f0f\u548c\u6700\u4f18\u5316\uff0c\u7528\u6237\u4ee3\u7406\u5e94\u8be5\u5e94\u7528\u90fd\u548c\u6b63\u5e38\u60c5\u51b5\u76f8\u540c
\nscroll-position \u8868\u793a\u5f00\u53d1\u8005\u671f\u671b\u53bb\u5728\u63a5\u4e0b\u6765\u53bb\u6539\u53d8\u6216\u8005\u6709\u52a8\u753b\u5e94\u7528\u5143\u7d20\u7684\u6eda\u52a8\u4f4d\u7f6e
\ncontents \u8868\u793a\u5f00\u53d1\u8005\u671f\u671b\u53bb\u5728\u63a5\u4e0b\u6765\u53bb\u6539\u53d8\u6216\u8005\u6709\u52a8\u753b\u5e94\u7528\u5143\u7d20\u7684\u5185\u5bb9
\n\u7528\u6765\u6392\u9664\u5173\u952e\u5b57 will-change, none, all, auto, scroll-position, and contents, \u4ece\u4e4b\u5916\u589e\u52a0\u4e00\u4e9b\u901a\u7528\u7684\u5173\u952e\u5b57<\/p>\n

will-change\uff1a transform\uff1a
\nwill-change\uff1a opacity\uff1a
\nwill-change\uff1a top, left, bottom, right\uff1a<\/p>\n

\u5982\u679c\u4e00\u4e2a\u5c5e\u6027\u65e0\u6700\u521d\u7684\u503c,\u5728\u8fd9\u4e2a\u5143\u7d20\u4e0a\u8fd9\u4e2a\u5c5e\u6027\u5c06\u521b\u5efa\u4e00\u4e2a\u5806\u6808\u7684\u5185\u5bb9, \u660e\u786e\u89c4\u5b9a\u5728will-change\u7684\u5c5e\u6027\u5fc5\u987b\u5728\u8fd9\u4e2a\u5143\u7d20\u4e0a\u521b\u5efa\u4e00\u4e2a\u5806\u6808\u7684\u5185\u5bb9.<\/p>\n

\u5982\u679c\u4e00\u4e2a\u5c5e\u6027\u65e0\u6700\u521d\u7684\u503c, \u8fd9\u4e2a\u5c5e\u6027\u5c06\u9020\u6210\u8fd9\u4e2a\u5143\u7d20\u4ea7\u751f\u4e00\u4e2a\u5305\u542b\u533a\u5757\u7684\u56fa\u5b9a\u5b9a\u4f4d\u7684\u5143\u7d20, \u660e\u786e\u89c4\u5b9a\u5728 will-change\u7684\u5c5e\u6027\u5fc5\u987b\u9020\u6210\u8fd9\u4e2a\u5143\u7d20\u4ea7\u751f\u4e00\u4e2a\u5305\u542b\u533a\u5757\u7684\u56fa\u5b9a\u5b9a\u4f4d\u7684\u5143\u7d20<\/p>\n","protected":false},"excerpt":{"rendered":"

CSS will-change \u5c5e\u6027\u4ecb\u7ecd \u5982\u679c\u4f60\u6ce8 …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[154,11],"tags":[],"class_list":["post-2608","post","type-post","status-publish","format-standard","hentry","category-css","category-11"],"_links":{"self":[{"href":"http:\/\/www.hiheng.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/2608","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.hiheng.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.hiheng.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.hiheng.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.hiheng.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2608"}],"version-history":[{"count":1,"href":"http:\/\/www.hiheng.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/2608\/revisions"}],"predecessor-version":[{"id":2609,"href":"http:\/\/www.hiheng.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/2608\/revisions\/2609"}],"wp:attachment":[{"href":"http:\/\/www.hiheng.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2608"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.hiheng.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2608"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.hiheng.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2608"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}