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alt=\"\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415113614\" width=\"704\" height=\"572\" \/><\/a><\/p>\n<p>\u865a\u62dfDOM\u6811<\/p>\n<p>\u6709\u4e86JS\u5bf9\u8c61\u540e\uff0c\u6700\u7ec8\u8fd8\u9700\u8981\u5c06\u5176\u6620\u5c04\u6210\u771f\u5b9eDOM<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/\/\/upload-images.jianshu.io\/upload_images\/4345378-a7d98ba2e9fb1bdc.png?imageMogr2\/auto-orient\/strip|imageView2\/2\/w\/616\/format\/webp\" alt=\"img\" \/><\/p>\n<p>\u865a\u62dfDOM\u5bf9\u8c61\u6620\u5c04\u6210\u771f\u5b9eDOM<\/p>\n<p>\u6211\u4eec\u5df2\u7ecf\u5b8c\u6210\u4e86\u521b\u5efa\u865a\u62dfDOM\u5e76\u5c06\u5176\u6620\u5c04\u6210\u771f\u5b9eDOM\uff0c\u8fd9\u6837\u6240\u6709\u7684\u66f4\u65b0\u90fd\u53ef\u4ee5\u5148\u53cd\u5e94\u5230\u865a\u62dfDOM\u4e0a\uff0c\u5982\u4f55\u53cd\u5e94\uff1f\u9700\u8981\u7528\u5230<strong>Diff\u7b97\u6cd5<\/strong>\u3002<\/p>\n<p>\u4e24\u68f5\u6811\u5982\u679c\u5b8c\u5168\u6bd4\u8f83\u65f6\u95f4\u590d\u6742\u5ea6\u662fO(n^3)\uff0c\u4f46\u53c2\u7167\u300a\u6df1\u5165\u6d45\u51faReact\u548cRedux\u300b\u4e00\u4e66\u4e2d\u7684\u4ecb\u7ecd\uff0cReact\u7684Diff\u7b97\u6cd5\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u662fO(n)\u3002\u8981\u5b9e\u73b0\u8fd9\u4e48\u4f4e\u7684\u65f6\u95f4\u590d\u6742\u5ea6\uff0c\u610f\u5473\u7740\u53ea\u80fd\u5e73\u5c42\u7684\u6bd4\u8f83\u4e24\u68f5\u6811\u7684\u8282\u70b9\uff0c\u653e\u5f03\u4e86\u6df1\u5ea6\u904d\u5386\u3002\u8fd9\u6837\u505a\uff0c\u4f3c\u4e4e\u727a\u7272\u6389\u4e86\u4e00\u5b9a\u7684\u7cbe\u786e\u6027\u6765\u6362\u53d6\u901f\u5ea6\uff0c\u4f46\u8003\u8651\u5230\u73b0\u5b9e\u4e2d\u524d\u7aef\u9875\u9762\u901a\u5e38\u4e5f\u4e0d\u4f1a\u8de8\u5c42\u79fb\u52a8DOM\u5143\u7d20\uff0c\u8fd9\u6837\u505a\u662f\u6700\u4f18\u7684\u3002<\/p>\n<h4>\u6df1\u5ea6\u4f18\u5148\u904d\u5386\uff0c\u8bb0\u5f55\u5dee\u5f02<\/h4>\n<p>\u3002\u3002\u3002\u3002<\/p>\n<h4>Diff\u64cd\u4f5c<\/h4>\n<p>\u5728\u5b9e\u9645\u4ee3\u7801\u4e2d\uff0c\u4f1a\u5bf9\u65b0\u65e7\u4e24\u68f5\u6811\u8fdb\u884c\u4e00\u4e2a\u6df1\u5ea6\u7684\u904d\u5386\uff0c\u6bcf\u4e2a\u8282\u70b9\u90fd\u4f1a\u6709\u4e00\u4e2a\u6807\u8bb0\u3002\u6bcf\u904d\u5386\u5230\u4e00\u4e2a\u8282\u70b9\u5c31\u628a\u8be5\u8282\u70b9\u548c\u65b0\u7684\u6811\u8fdb\u884c\u5bf9\u6bd4\uff0c\u5982\u679c\u6709\u5dee\u5f02\u5c31\u8bb0\u5f55\u5230\u4e00\u4e2a\u5bf9\u8c61\u4e2d\u3002<\/p>\n<p>\u4e0b\u9762\u6211\u4eec\u521b\u5efa\u4e00\u68f5\u65b0\u6811\uff0c\u7528\u4e8e\u548c\u4e4b\u524d\u7684\u6811\u8fdb\u884c\u6bd4\u8f83\uff0c\u6765\u770b\u770bDiff\u7b97\u6cd5\u662f\u600e\u4e48\u64cd\u4f5c\u7684\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/\/\/upload-images.jianshu.io\/upload_images\/4345378-58f905e4f9049b2c.png?imageMogr2\/auto-orient\/strip|imageView2\/2\/w\/621\/format\/webp\" alt=\"img\" \/><\/p>\n<p>old Tree<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/\/\/upload-images.jianshu.io\/upload_images\/4345378-e3aeff752058cd96.png?imageMogr2\/auto-orient\/strip|imageView2\/2\/w\/620\/format\/webp\" alt=\"img\" \/><\/p>\n<p>new Tree<\/p>\n<p>\u5e73\u5c42Diff\uff0c\u53ea\u6709\u4ee5\u4e0b4\u79cd\u60c5\u51b5\uff1a<\/p>\n<p>1\u3001<strong>\u8282\u70b9\u7c7b\u578b\u53d8\u4e86<\/strong>\uff0c\u4f8b\u5982\u4e0b\u56fe\u4e2d\u7684P\u53d8\u6210\u4e86H3\u3002\u6211\u4eec\u5c06\u8fd9\u4e2a\u8fc7\u7a0b\u79f0\u4e4b\u4e3a<strong>REPLACE<\/strong>\u3002\u76f4\u63a5\u5c06\u65e7\u8282\u70b9\u5378\u8f7d\u5e76\u88c5\u8f7d\u65b0\u8282\u70b9\u3002\u65e7\u8282\u70b9\u5305\u62ec\u4e0b\u9762\u7684\u5b50\u8282\u70b9\u90fd\u5c06\u88ab\u5378\u8f7d\uff0c\u5982\u679c\u65b0\u8282\u70b9\u548c\u65e7\u8282\u70b9\u4ec5\u4ec5\u662f\u7c7b\u578b\u4e0d\u540c\uff0c\u4f46\u4e0b\u9762\u7684\u6240\u6709\u5b50\u8282\u70b9\u90fd\u4e00\u6837\u65f6\uff0c\u8fd9\u6837\u505a\u6548\u7387\u4e0d\u9ad8\u3002\u4f46\u4e3a\u4e86\u907f\u514dO(n^3)\u7684\u65f6\u95f4\u590d\u6742\u5ea6\uff0c\u8fd9\u6837\u662f\u503c\u5f97\u7684\u3002\u8fd9\u4e5f\u63d0\u9192\u4e86\u5f00\u53d1\u8005\uff0c\u5e94\u8be5\u907f\u514d\u65e0\u8c13\u7684\u8282\u70b9\u7c7b\u578b\u7684\u53d8\u5316\uff0c\u4f8b\u5982\u8fd0\u884c\u65f6\u5c06div\u53d8\u6210p\u6ca1\u6709\u610f\u4e49\u3002<\/p>\n<p>2\u3001<strong>\u8282\u70b9\u7c7b\u578b\u4e00\u6837\uff0c\u4ec5\u4ec5\u5c5e\u6027\u6216\u5c5e\u6027\u503c\u53d8\u4e86\u3002<\/strong>\u6211\u4eec\u5c06\u8fd9\u4e2a\u8fc7\u7a0b\u79f0\u4e4b\u4e3a<strong>PROPS<\/strong>\u3002\u6b64\u65f6\u4e0d\u4f1a\u89e6\u53d1\u8282\u70b9\u5378\u8f7d\u548c\u88c5\u8f7d\uff0c\u800c\u662f\u8282\u70b9\u66f4\u65b0\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/\/\/upload-images.jianshu.io\/upload_images\/4345378-6b717c34619c54b2.png?imageMogr2\/auto-orient\/strip|imageView2\/2\/w\/620\/format\/webp\" alt=\"img\" \/><\/p>\n<p>\u67e5\u627e\u4e0d\u540c\u5c5e\u6027\u65b9\u6cd5<\/p>\n<p>3\u3001<strong>\u6587\u672c\u53d8\u4e86<\/strong>\uff0c\u6587\u672c\u5bf9\u4e5f\u662f\u4e00\u4e2aText Node\uff0c\u4e5f\u6bd4\u8f83\u7b80\u5355\uff0c\u76f4\u63a5\u4fee\u6539\u6587\u5b57\u5185\u5bb9\u5c31\u884c\u4e86\uff0c\u6211\u4eec\u5c06\u8fd9\u4e2a\u8fc7\u7a0b\u79f0\u4e4b\u4e3a<strong>TEXT<\/strong>\u3002<\/p>\n<p>4\u3001\u79fb\u52a8\uff0f\u589e\u52a0\uff0f\u5220\u9664 \u5b50\u8282\u70b9\uff0c\u6211\u4eec\u5c06\u8fd9\u4e2a\u8fc7\u7a0b\u79f0\u4e4b\u4e3a<strong>REORDER<\/strong>\u3002\u770b\u4e00\u4e2a\u4f8b\u5b50\uff0c\u5728A\u3001B\u3001C\u3001D\u3001E\u4e94\u4e2a\u8282\u70b9\u7684B\u548cC\u4e2d\u7684BC\u4e24\u4e2a\u8282\u70b9\u4e2d\u95f4\u52a0\u5165\u4e00\u4e2aF\u8282\u70b9\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/\/\/upload-images.jianshu.io\/upload_images\/4345378-4515ca8e797224a0.jpeg?imageMogr2\/auto-orient\/strip|imageView2\/2\/w\/700\/format\/webp\" alt=\"img\" \/><\/p>\n<p>\u4f8b\u5b50<\/p>\n<p>\u6211\u4eec<strong>\u7b80\u5355\u7c97\u66b4\u7684\u505a\u6cd5<\/strong>\u662f\u904d\u5386\u6bcf\u4e00\u4e2a\u65b0\u865a\u62dfDOM\u7684\u8282\u70b9\uff0c\u4e0e\u65e7\u865a\u62dfDOM\u5bf9\u6bd4\u76f8\u5e94\u8282\u70b9\u5bf9\u6bd4\uff0c\u5728\u65e7DOM\u4e2d\u662f\u5426\u5b58\u5728\uff0c\u4e0d\u540c\u5c31\u5378\u8f7d\u539f\u6765\u7684\u6309\u4e0a\u65b0\u7684\u3002\u8fd9\u6837\u4f1a\u5bf9F\u540e\u8fb9\u6bcf\u4e00\u4e2a\u8282\u70b9\u8fdb\u884c\u64cd\u4f5c\u3002\u5378\u8f7dC\uff0c\u88c5\u8f7dF\uff0c\u5378\u8f7dD\uff0c\u88c5\u8f7dC\uff0c\u5378\u8f7dE\uff0c\u88c5\u8f7dD\uff0c\u88c5\u8f7dE\u3002<strong>\u6548\u7387\u592a\u4f4e\u3002<\/strong><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/\/\/upload-images.jianshu.io\/upload_images\/4345378-eb3f73c67d3ef57e.jpeg?imageMogr2\/auto-orient\/strip|imageView2\/2\/w\/700\/format\/webp\" alt=\"img\" \/><\/p>\n<p>\u7c97\u66b4\u505a\u6cd5<\/p>\n<p>\u5982\u679c\u6211\u4eec\u5728JSX\u91cc\u4e3a\u6570\u7ec4\u6216\u679a\u4e3e\u578b\u5143\u7d20\u589e\u52a0\u4e0akey\u540e\uff0c\u5b83\u80fd\u591f\u6839\u636ekey\uff0c\u76f4\u63a5\u627e\u5230\u5177\u4f53\u4f4d\u7f6e\u8fdb\u884c\u64cd\u4f5c\uff0c\u6548\u7387\u6bd4\u8f83\u9ad8\u3002\u5e38\u89c1\u7684<strong>\u6700\u5c0f\u7f16\u8f91\u8ddd\u79bb\u95ee\u9898<\/strong>\uff0c\u53ef\u4ee5\u7528Levenshtein Distance\u7b97\u6cd5\u6765\u5b9e\u73b0\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u662fO(M*N)\uff0c\u4f46\u901a\u5e38\u6211\u4eec\u53ea\u8981\u4e00\u4e9b\u7b80\u5355\u7684\u79fb\u52a8\u5c31\u80fd\u6ee1\u8db3\u9700\u8981\uff0c\u964d\u4f4e\u7cbe\u786e\u6027\uff0c\u5c06\u65f6\u95f4\u590d\u6742\u5ea6\u964d\u4f4e\u5230O(max(M,N))\u5373\u53ef\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/\/\/upload-images.jianshu.io\/upload_images\/4345378-ec9c6737f4e4f1da.png?imageMogr2\/auto-orient\/strip|imageView2\/2\/w\/622\/format\/webp\" alt=\"img\" \/><\/p>\n<p>\u6700\u7ec8Diff\u51fa\u6765\u7684\u7ed3\u679c<\/p>\n<h4>\u6620\u5c04\u6210\u771f\u5b9eDOM<\/h4>\n<p>\u865a\u62dfDOM\u6709\u4e86\uff0cDiff\u4e5f\u6709\u4e86\uff0c\u73b0\u5728\u5c31\u53ef\u4ee5\u5c06Diff\u5e94\u7528\u5230\u771f\u5b9eDOM\u4e0a\u4e86\u3002\u6df1\u5ea6\u904d\u5386DOM\u5c06Diff\u7684\u5185\u5bb9\u66f4\u65b0\u8fdb\u53bb\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/\/\/upload-images.jianshu.io\/upload_images\/4345378-73e7e6db57d95032.png?imageMogr2\/auto-orient\/strip|imageView2\/2\/w\/617\/format\/webp\" alt=\"img\" \/><\/p>\n<p>\u6839\u636eDiff\u66f4\u65b0DOM<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/\/\/upload-images.jianshu.io\/upload_images\/4345378-424038129a2f06f9.png?imageMogr2\/auto-orient\/strip|imageView2\/2\/w\/617\/format\/webp\" alt=\"img\" \/><\/p>\n<p>\u6839\u636eDiff\u66f4\u65b0DOM<\/p>\n<p>\u6211\u4eec\u4f1a\u6709\u4e24\u4e2a\u865a\u62dfDOM(js\u5bf9\u8c61\uff0cnew\/old\u8fdb\u884c\u6bd4\u8f83diff)\uff0c\u7528\u6237\u4ea4\u4e92\u6211\u4eec\u64cd\u4f5c\u6570\u636e\u53d8\u5316new\u865a\u62dfDOM\uff0cold\u865a\u62dfDOM\u4f1a\u6620\u5c04\u6210<strong>\u5b9e\u9645DOM(<\/strong>js\u5bf9\u8c61\u751f\u6210\u7684DOM\u6587\u6863)\u901a\u8fc7<strong>DOM fragment<\/strong>\u64cd\u4f5c\u7ed9\u6d4f\u89c8\u5668\u6e32\u67d3\u3002\u5f53\u4fee\u6539new\u865a\u62dfDOM\uff0c\u4f1a\u628anewDOM\u548coldDOM\u901a\u8fc7diff\u7b97\u6cd5\u6bd4\u8f83\uff0c\u5f97\u51fadiff\u7ed3\u679c\u6570\u636e\u8868(\u75284\u79cd\u53d8\u6362\u60c5\u51b5\u8868\u793a)\u3002\u518d\u628adiff\u7ed3\u679c\u8868\u901a\u8fc7<strong>DOM<\/strong> <strong>fragment<\/strong>\u66f4\u65b0\u5230<strong>\u6d4f\u89c8\u5668DOM<\/strong>\u4e2d\u3002<\/p>\n<p>\u865a\u62dfDOM\u7684\u5b58\u5728\u7684\u610f\u4e49\uff1fvdom \u7684\u771f\u6b63\u610f\u4e49\u662f\u4e3a\u4e86\u5b9e\u73b0\u8de8\u5e73\u53f0\uff0c\u670d\u52a1\u7aef\u6e32\u67d3\uff0c\u4ee5\u53ca\u63d0\u4f9b\u4e00\u4e2a\u6027\u80fd\u8fd8\u7b97\u4e0d\u9519 Dom \u66f4\u65b0\u7b56\u7565\u3002vdom \u8ba9\u6574\u4e2a mvvm \u6846\u67b6\u7075\u6d3b\u4e86\u8d77\u6765<\/p>\n<p>Diff\u7b97\u6cd5\u53ea\u662f\u4e3a\u4e86\u865a\u62dfDOM\u6bd4\u8f83\u66ff\u6362\u6548\u7387\u66f4\u9ad8\uff0c\u901a\u8fc7Diff\u7b97\u6cd5\u5f97\u5230diff\u7b97\u6cd5\u7ed3\u679c\u6570\u636e\u8868(\u9700\u8981\u8fdb\u884c\u54ea\u4e9b\u64cd\u4f5c\u8bb0\u5f55\u8868)\u3002\u539f\u672c\u8981\u64cd\u4f5c\u7684DOM\u5728vue\u8fd9\u8fb9\u8fd8\u662f\u8981\u64cd\u4f5c\u7684\uff0c\u53ea\u4e0d\u8fc7\u7528\u5230\u4e86js\u7684<strong>DOM<\/strong> <strong>fragment<\/strong>\u6765\u64cd\u4f5cdom\uff08\u7edf\u4e00\u8ba1\u7b97\u51fa\u6240\u6709\u53d8\u5316\u540e\u7edf\u4e00\u66f4\u65b0\u4e00\u6b21DOM\uff09\u8fdb\u884c\u6d4f\u89c8\u5668DOM\u4e00\u6b21\u6027\u66f4\u65b0\u3002\u5176\u5b9e<strong>DOM<\/strong> <strong>fragment<\/strong>\u6211\u4eec\u4e0d\u7528\u5e73\u65f6\u53d1\u5f00\u4e5f\u80fd\u7528\uff0c\u4f46\u662f\u8fd9\u6837\u7a0b\u5e8f\u5458\u5199\u4e1a\u52a1\u4ee3\u7801\u5c31\u7528\u628aDOM\u64cd\u4f5c\u653e\u5230fragment\u91cc\uff0c\u8fd9\u5c31\u662f\u6846\u67b6\u7684\u4ef7\u503c\uff0c\u7a0b\u5e8f\u5458\u624d\u80fd\u4e13\u6ce8\u4e8e\u5199\u4e1a\u52a1\u4ee3\u7801<strong>\u3002<\/strong><\/p>\n<p>\u94fe\u63a5\uff1a<a class=\"url\" href=\"https:\/\/www.jianshu.com\/p\/af0b398602bc\" target=\"_blank\">https:\/\/www.jianshu.com\/p\/af0b398602bc<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; \u4e00\u3001\u771f\u5b9eDOM\u548c\u5176\u89e3\u6790\u6d41\u7a0b\uff1f \u6d4f\u89c8\u5668\u6e32\u67d3\u5f15\u64ce\u5de5\u4f5c\u6d41\u7a0b\u90fd\u5dee\u4e0d\u591a\uff0c\u5927\u81f4\u5206\u4e3a5\u6b65\uff0c\u521b\u5efaDOM\u6811\u2014\u2014\u521b\u5efa [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[106,105],"tags":[],"_links":{"self":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/2703"}],"collection":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2703"}],"version-history":[{"count":2,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/2703\/revisions"}],"predecessor-version":[{"id":2710,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/2703\/revisions\/2710"}],"wp:attachment":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2703"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2703"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2703"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}