{"id":2888,"date":"2020-04-19T22:14:46","date_gmt":"2020-04-19T14:14:46","guid":{"rendered":"http:\/\/www.yuguoxy.com\/geekhome\/?p=2888"},"modified":"2020-04-19T22:21:53","modified_gmt":"2020-04-19T14:21:53","slug":"2888","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=2888","title":{"rendered":"2020\u5e38\u89c1\u9762\u8bd5\u9898"},"content":{"rendered":"<p>\u9762\u8bd5\u4e86\u51e0\u5bb6\u516c\u53f8\uff0c\u9762\u8bd5\u9898\u6574\u7406\u4e00\u756a\uff0c\u5e0c\u671b\u6709\u5e2e\u52a9\uff0c\u7b54\u6848\u4ec5\u4f9b\u53c2\u8003\u3002<\/p>\n<p>\u4e00\u9762\u90fd\u6bd4\u8f83\u504f\u57fa\u7840\uff0c\u5927\u90e8\u5206\u9898\u76ee\u90fd\u4f1a\uff0c\u5373\u4f7f\u4e0d\u4f1a\u4e5f\u4f3c\u66fe\u76f8\u8bc6\uff0c\u90fd\u80fd\u8bf4\u4e0a\u51e0\u53e5\u3002\u4f46\u4e3a\u4ec0\u4e48\u6709\u4e9b\u4eba\u80fd\u8fc7\u6709\u4e9b\u4eba\u8fc7\u4e0d\u4e86\uff0c\u8fd9\u5c31\u662f\u8003\u67e5\u4f60\u7684\u57fa\u7840\u77e5\u8bc6\u662f\u5426\u5168\u9762\u4e14\u624e\u5b9e\u3002\u4f1a\u662f\u5e94\u8be5\u7684\uff0c\u4f46\u4f60\u7684\u7b54\u6848\u4e00\u5b9a\u8981\u8be6\u7ec6\u5e76\u4e14\u6709\u4e9b\u9898\u8981\u8bf4\u51fa\u591a\u79cd\u7b54\u6848\u3002\u8fd9\u5c31\u9700\u8981\u5404\u4f4d\u5e73\u5e38\u7684\u79ef\u7d2f\u4e86<\/p>\n<h2>css<\/h2>\n<h2>calc, support, media\u5404\u81ea\u7684\u542b\u4e49\u53ca\u7528\u6cd5\uff1f<\/h2>\n<p>@support\u4e3b\u8981\u662f\u7528\u4e8e\u68c0\u6d4b\u6d4f\u89c8\u5668\u662f\u5426\u652f\u6301CSS\u7684\u67d0\u4e2a\u5c5e\u6027\uff0c\u5176\u5b9e\u5c31\u662f\u6761\u4ef6\u5224\u65ad\uff0c\u5982\u679c\u652f\u6301\u67d0\u4e2a\u5c5e\u6027\uff0c\u4f60\u53ef\u4ee5\u5199\u4e00\u5957\u6837\u5f0f\uff0c\u5982\u679c\u4e0d\u652f\u6301\u67d0\u4e2a\u5c5e\u6027\uff0c\u4f60\u4e5f\u53ef\u4ee5\u63d0\u4f9b\u53e6\u5916\u4e00\u5957\u6837\u5f0f\u4f5c\u4e3a\u66ff\u8865\u3002<\/p>\n<p>calc() \u51fd\u6570\u7528\u4e8e\u52a8\u6001\u8ba1\u7b97\u957f\u5ea6\u503c\u3002 calc()\u51fd\u6570\u652f\u6301 &#8220;+&#8221;, &#8220;-&#8220;, &#8220;*&#8221;, &#8220;\/&#8221; \u8fd0\u7b97\uff1b<\/p>\n<p>@media \u67e5\u8be2\uff0c\u4f60\u53ef\u4ee5\u9488\u5bf9\u4e0d\u540c\u7684\u5a92\u4f53\u7c7b\u578b\u5b9a\u4e49\u4e0d\u540c\u7684\u6837\u5f0f\u3002<\/p>\n<h2>css\u6c34\u5e73\u3001\u5782\u76f4\u5c45\u4e2d\u7684\u5199\u6cd5\uff0c\u8bf7\u81f3\u5c11\u5199\u51fa4\u79cd\uff1f<\/h2>\n<blockquote><p>\u8fd9\u9898\u8003\u67e5\u7684\u662fcss\u7684\u57fa\u7840\u77e5\u8bc6\u662f\u5426\u5168\u9762\uff0c\u6240\u4ee5\u5e73\u65f6\u4e00\u5b9a\u8981\u6ce8\u610f\u591a\u79ef\u7d2f<\/p><\/blockquote>\n<p><em>\u6c34\u5e73\u5c45\u4e2d<\/em><\/p>\n<ul>\n<li>\u884c\u5185\u5143\u7d20: <code>text<span style=\"font-family: 'Open Sans', 'Clear Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;\">-<\/span>align: center<\/code><\/li>\n<li>\u5757\u7ea7\u5143\u7d20: <code>margin: 0 auto<\/code><\/li>\n<li>position:absolute +left:50%+ transform:translateX(-50%)<\/li>\n<li><code>display:flex + justify<span style=\"font-family: 'Open Sans', 'Clear Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;\">-<\/span>content: center<\/code><\/li>\n<\/ul>\n<p><em>\u5782\u76f4\u5c45\u4e2d<\/em><\/p>\n<ul>\n<li>\u8bbe\u7f6eline-height \u7b49\u4e8eheight<\/li>\n<li>position\uff1aabsolute +top:50%+ transform:translateY(-50%)<\/li>\n<li><code>display:flex + align<span style=\"font-family: 'Open Sans', 'Clear Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;\">-<\/span>items: center<\/code><\/li>\n<li>display:table+display:table-cell + vertical-align: middle;<\/li>\n<\/ul>\n<h2>1rem\u30011em\u30011vh\u30011px\u5404\u81ea\u4ee3\u8868\u7684\u542b\u4e49\uff1f<\/h2>\n<blockquote><p>rem<\/p><\/blockquote>\n<p>rem\u662f\u5168\u90e8\u7684\u957f\u5ea6\u90fd\u76f8\u5bf9\u4e8e\u6839\u5143\u7d20\u5143\u7d20\u3002\u901a\u5e38\u505a\u6cd5\u662f\u7ed9html\u5143\u7d20\u8bbe\u7f6e\u4e00\u4e2a\u5b57\u4f53\u5927\u5c0f\uff0c\u7136\u540e\u5176\u4ed6\u5143\u7d20\u7684\u957f\u5ea6\u5355\u4f4d\u5c31\u4e3arem\u3002<\/p>\n<blockquote><p>em<\/p><\/blockquote>\n<ul>\n<li>\u5b50\u5143\u7d20\u5b57\u4f53\u5927\u5c0f\u7684em\u662f\u76f8\u5bf9\u4e8e\u7236\u5143\u7d20\u5b57\u4f53\u5927\u5c0f<\/li>\n<li>\u5143\u7d20\u7684width\/height\/padding\/margin\u7528em\u7684\u8bdd\u662f\u76f8\u5bf9\u4e8e\u8be5\u5143\u7d20\u7684font-size<\/li>\n<\/ul>\n<blockquote><p>vw\/vh<\/p><\/blockquote>\n<p>\u5168\u79f0\u662f Viewport Width \u548c Viewport Height\uff0c\u89c6\u7a97\u7684\u5bbd\u5ea6\u548c\u9ad8\u5ea6\uff0c\u76f8\u5f53\u4e8e \u5c4f\u5e55\u5bbd\u5ea6\u548c\u9ad8\u5ea6\u7684 1%\uff0c\u4e0d\u8fc7\uff0c\u5904\u7406\u5bbd\u5ea6\u7684\u65f6\u5019%\u5355\u4f4d\u66f4\u5408\u9002\uff0c\u5904\u7406\u9ad8\u5ea6\u7684 \u8bdd vh \u5355\u4f4d\u66f4\u597d\u3002<\/p>\n<blockquote><p>px<\/p><\/blockquote>\n<p>px\u50cf\u7d20\uff08Pixel\uff09\u3002\u76f8\u5bf9\u957f\u5ea6\u5355\u4f4d\u3002\u50cf\u7d20px\u662f\u76f8\u5bf9\u4e8e\u663e\u793a\u5668\u5c4f\u5e55\u5206\u8fa8\u7387\u800c\u8a00\u7684\u3002<\/p>\n<p>\u4e00\u822c\u7535\u8111\u7684\u5206\u8fa8\u7387\u6709{1920*1024}\u7b49\u4e0d\u540c\u7684\u5206\u8fa8\u7387<\/p>\n<p>1920*1024 \u524d\u8005\u662f\u5c4f\u5e55\u5bbd\u5ea6\u603b\u5171\u67091920\u4e2a\u50cf\u7d20,\u540e\u8005\u5219\u662f\u9ad8\u5ea6\u4e3a1024\u4e2a\u50cf\u7d20<\/p>\n<h2>\u753b\u4e00\u67610.5px\u7684\u76f4\u7ebf\uff1f<\/h2>\n<blockquote><p>\u8003\u67e5\u7684\u662fcss3\u7684transform<\/p><\/blockquote>\n<pre><code class=\"language-css\" lang=\"css\">height: 1px;\r\ntransform: scale(0.5);\r\n<\/code><\/pre>\n<h2>\u8bf4\u4e00\u4e0b\u76d2\u6a21\u578b\uff1f<\/h2>\n<blockquote><p>\u76d2\u6a21\u578b\u662fcss\u4e2d\u91cd\u8981\u7684\u57fa\u7840\u77e5\u8bc6\uff0c\u4e5f\u662f\u5fc5\u8003\u7684\u57fa\u7840\u77e5\u8bc6<\/p><\/blockquote>\n<p>\u76d2\u6a21\u578b\u7684\u7ec4\u6210\uff0c\u7531\u91cc\u5411\u5916content,padding,border,margin.<\/p>\n<p>\u5728IE\u76d2\u5b50\u6a21\u578b\u4e2d\uff0cwidth\u8868\u793acontent+padding+border\u8fd9\u4e09\u4e2a\u90e8\u5206\u7684\u5bbd\u5ea6<\/p>\n<p>\u5728\u6807\u51c6\u7684\u76d2\u5b50\u6a21\u578b\u4e2d\uff0cwidth\u6307content\u90e8\u5206\u7684\u5bbd\u5ea6<\/p>\n<p>box-sizing\u7684\u4f7f\u7528<\/p>\n<pre><code class=\"language-css\" lang=\"css\">  box-sizing: content-box \u662fW3C\u76d2\u5b50\u6a21\u578b\r\n  box-sizing: border-box \u662fIE\u76d2\u5b50\u6a21\u578b\r\n<\/code><\/pre>\n<p>box-sizing\u7684\u9ed8\u8ba4\u5c5e\u6027\u662fcontent-box<\/p>\n<h2>\u753b\u4e00\u4e2a\u4e09\u89d2\u5f62\uff1f<\/h2>\n<blockquote><p>\u8fd9\u5c5e\u4e8e\u7b80\u5355\u7684css\u8003\u67e5\uff0c\u5e73\u65f6\u5728\u7528\u7ec4\u4ef6\u5e93\u7684\u540c\u65f6\uff0c\u4e5f\u522b\u5fd8\u4e86\u539f\u751f\u7684css<\/p><\/blockquote>\n<pre><code class=\"language-html\" lang=\"html\">&lt;style&gt; \r\n.a{\r\n            width: 0;\r\n            height: 0;\r\n            border-width: 100px;\r\n            border-style: solid;\r\n            border-color: transparent #0099CC transparent transparent;\r\n            transform: rotate(90deg); \/*\u987a\u65f6\u9488\u65cb\u8f6c90\u00b0*\/\r\n }\r\n&lt;\/style&gt;\r\n&lt;div class=\"a\"&gt;&lt;\/div&gt;\r\n<\/code><\/pre>\n<h2>\u6e05\u9664\u6d6e\u52a8\u7684\u51e0\u79cd\u65b9\u5f0f\uff0c\u53ca\u539f\u7406\uff1f<\/h2>\n<blockquote><p>\u6e05\u9664\u6d6e\u52a8\u7b80\u5355\uff0c\u4f46\u8fd9\u9898\u8981\u5f15\u51fa\u7684\u662fBFC\uff0cBFC\u4e5f\u662f\u5fc5\u8003\u7684\u57fa\u7840\u77e5\u8bc6\u70b9<\/p><\/blockquote>\n<ul>\n<li><code>::after \/ &lt;br&gt; \/ clear: both<\/code><\/li>\n<li>\u521b\u5efa\u7236\u7ea7 <code>BFC<\/code>(overflow:hidden)<\/li>\n<li>\u7236\u7ea7\u8bbe\u7f6e\u9ad8\u5ea6<\/li>\n<\/ul>\n<blockquote><p><em>BFC \uff08<\/em>\u5757\u7ea7\u683c\u5f0f\u5316\u4e0a\u4e0b\u6587<em>\uff09<\/em>\uff0c\u662f\u4e00\u4e2a\u72ec\u7acb\u7684\u6e32\u67d3\u533a\u57df\uff0c\u8ba9\u5904\u4e8e <code>BFC<\/code> \u5185\u90e8\u7684\u5143\u7d20\u4e0e\u5916\u90e8\u7684\u5143\u7d20\u76f8\u4e92\u9694\u79bb\uff0c\u4f7f\u5185\u5916\u5143\u7d20\u7684\u5b9a\u4f4d\u4e0d\u4f1a\u76f8\u4e92\u5f71\u54cd\u3002<\/p><\/blockquote>\n<p><em>\u89e6\u53d1\u6761\u4ef6:<\/em><\/p>\n<ul>\n<li>\u6839\u5143\u7d20<\/li>\n<li><code>position: absolute\/fixed<\/code><\/li>\n<li><code>display: inline<span style=\"font-family: 'Open Sans', 'Clear Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;\">-<\/span>block \/ table<\/code><\/li>\n<li><code>float<\/code> \u5143\u7d20<\/li>\n<li><code>ovevflow !== visible<\/code><\/li>\n<\/ul>\n<p><em>\u89c4\u5219:<\/em><\/p>\n<ul>\n<li>\u5c5e\u4e8e\u540c\u4e00\u4e2a <code>BFC<\/code> \u7684\u4e24\u4e2a\u76f8\u90bb <code>Box<\/code> \u5782\u76f4\u6392\u5217<\/li>\n<li>\u5c5e\u4e8e\u540c\u4e00\u4e2a <code>BFC<\/code> \u7684\u4e24\u4e2a\u76f8\u90bb <code>Box<\/code> \u7684 <code>margin<\/code> \u4f1a\u53d1\u751f\u91cd\u53e0<\/li>\n<li><code>BFC<\/code> \u7684\u533a\u57df\u4e0d\u4f1a\u4e0e <code>float<\/code> \u7684\u5143\u7d20\u533a\u57df\u91cd\u53e0<\/li>\n<li>\u8ba1\u7b97 <code>BFC<\/code> \u7684\u9ad8\u5ea6\u65f6\uff0c\u6d6e\u52a8\u5b50\u5143\u7d20\u4e5f\u53c2\u4e0e\u8ba1\u7b97<\/li>\n<li>\u6587\u5b57\u5c42\u4e0d\u4f1a\u88ab\u6d6e\u52a8\u5c42\u8986\u76d6\uff0c\u73af\u7ed5\u4e8e\u5468\u56f4<\/li>\n<\/ul>\n<h2>html<\/h2>\n<h2>\u8bf4\u4e00\u4e0b<label>\u6807\u7b7e\u7684\u7528\u6cd5<\/label><\/h2>\n<p>label\u6807\u7b7e\u4e3b\u8981\u662f\u65b9\u4fbf\u9f20\u6807\u70b9\u51fb\u4f7f\u7528\uff0c\u6269\u5927\u53ef\u70b9\u51fb\u7684\u8303\u56f4\uff0c\u589e\u5f3a\u7528\u6237\u64cd\u4f5c\u4f53\u9a8c<\/p>\n<h2>\u904d\u5386A\u8282\u70b9\u7684\u7236\u8282\u70b9\u4e0b\u7684\u6240\u6709\u5b50\u8282\u70b9<\/h2>\n<blockquote><p>\u8fd9\u9898\u8003\u67e5\u539f\u751f\u7684js\u64cd\u4f5cdom,\u5c5e\u4e8e\u975e\u5e38\u7b80\u5355\u7684\u57fa\u7840\u9898\uff0c\u4f46\u957f\u65f6\u95f4\u4f7f\u7528mvvm\u6846\u67b6\uff0c\u53ef\u80fd\u4f1a\u5fd8\u8bb0<\/p><\/blockquote>\n<pre><code class=\"language-js\" lang=\"js\">&lt;script&gt;\r\n    var b=document.getElementById(\"a\").parentNode.children;\r\n    console.log(b)\r\n&lt;\/script&gt;\r\n<\/code><\/pre>\n<h2>js<\/h2>\n<h2>\u7528js\u9012\u5f52\u7684\u65b9\u5f0f\u51991\u5230100\u6c42\u548c\uff1f<\/h2>\n<blockquote><p>\u9012\u5f52\u6211\u4eec\u7ecf\u5e38\u7528\u5230\uff0cvue\u5728\u5b9e\u73b0\u53cc\u5411\u7ed1\u5b9a\u8fdb\u884c\u6570\u636e\u68c0\u9a8c\u7684\u65f6\u5019\u7528\u7684\u4e5f\u662f\u9012\u5f52\uff0c\u4f46\u8981\u6211\u4eec\u9762\u8bd5\u7684\u65f6\u5019\u624b\u5199\u4e00\u4e2a\u9012\u5f52\uff0c\u5982\u679c\u5bf9\u9012\u5f52\u7684\u6982\u5ff5\u7406\u89e3\u4e0d\u900f\u5f7b\uff0c\u53ef\u80fd\u8fd8\u662f\u4f1a\u6709\u4e00\u4e9b\u95ee\u9898\u3002<\/p><\/blockquote>\n<pre><code class=\"language-js\" lang=\"js\">function add(num1,num2){\r\n\tvar num = num1+num2;\r\n        if(num2+1&gt;100){\r\n\t return num;\r\n\t}else{\r\n\t  return add(num,num2+1)\r\n        }\r\n }\r\nvar sum =add(1,2);                 \r\n<\/code><\/pre>\n<h2>\u9875\u9762\u6e32\u67d3html\u7684\u8fc7\u7a0b\uff1f<\/h2>\n<blockquote><p>\u4e0d\u9700\u8981\u6b7b\u8bb0\u786c\u80cc\uff0c\u7406\u89e3\u6574\u4e2a\u8fc7\u7a0b\u5373\u53ef<\/p><\/blockquote>\n<p>\u6d4f\u89c8\u5668\u6e32\u67d3\u9875\u9762\u7684\u4e00\u822c\u8fc7\u7a0b\uff1a<\/p>\n<p>1.\u6d4f\u89c8\u5668\u89e3\u6790html\u6e90\u7801\uff0c\u7136\u540e\u521b\u5efa\u4e00\u4e2a DOM\u6811\u3002\u5e76\u884c\u8bf7\u6c42 css\/image\/js\u5728DOM\u6811\u4e2d\uff0c\u6bcf\u4e00\u4e2aHTML\u6807\u7b7e\u90fd\u6709\u4e00\u4e2a\u5bf9\u5e94\u7684\u8282\u70b9\uff0c\u5e76\u4e14\u6bcf\u4e00\u4e2a\u6587\u672c\u4e5f\u90fd\u4f1a\u6709\u4e00\u4e2a\u5bf9\u5e94\u7684\u6587\u672c\u8282\u70b9\u3002DOM\u6811\u7684\u6839\u8282\u70b9\u5c31\u662f documentElement\uff0c\u5bf9\u5e94\u7684\u662fhtml\u6807\u7b7e\u3002<\/p>\n<p>2.\u6d4f\u89c8\u5668\u89e3\u6790CSS\u4ee3\u7801\uff0c\u8ba1\u7b97\u51fa\u6700\u7ec8\u7684\u6837\u5f0f\u6570\u636e\u3002\u6784\u5efaCSSOM\u6811\u3002\u5bf9CSS\u4ee3\u7801\u4e2d\u975e\u6cd5\u7684\u8bed\u6cd5\u5b83\u4f1a\u76f4\u63a5\u5ffd\u7565\u6389\u3002\u89e3\u6790CSS\u7684\u65f6\u5019\u4f1a\u6309\u7167\u5982\u4e0b\u987a\u5e8f\u6765\u5b9a\u4e49\u4f18\u5148\u7ea7\uff1a\u6d4f\u89c8\u5668\u9ed8\u8ba4\u8bbe\u7f6e &lt; \u7528\u6237\u8bbe\u7f6e &lt; \u5916\u94fe\u6837\u5f0f &lt; \u5185\u8054\u6837\u5f0f &lt; html\u4e2d\u7684style\u3002<\/p>\n<p>3.DOM Tree + CSSOM &#8211;&gt; \u6e32\u67d3\u6811\uff08rendering tree\uff09\u3002\u6e32\u67d3\u6811\u548cDOM\u6811\u6709\u70b9\u50cf\uff0c\u4f46\u662f\u662f\u6709\u533a\u522b\u7684\u3002<\/p>\n<p>DOM\u6811\u5b8c\u5168\u548chtml\u6807\u7b7e\u4e00\u4e00\u5bf9\u5e94\uff0c\u4f46\u662f\u6e32\u67d3\u6811\u4f1a\u5ffd\u7565\u6389\u4e0d\u9700\u8981\u6e32\u67d3\u7684\u5143\u7d20\uff0c\u6bd4\u5982head\u3001display:none\u7684\u5143\u7d20\u7b49\u3002\u800c\u4e14\u4e00\u5927\u6bb5\u6587\u672c\u4e2d\u7684\u6bcf\u4e00\u4e2a\u884c\u5728\u6e32\u67d3\u6811\u4e2d\u90fd\u662f\u72ec\u7acb\u7684\u4e00\u4e2a\u8282\u70b9\u3002\u6e32\u67d3\u6811\u4e2d\u7684\u6bcf\u4e00\u4e2a\u8282\u70b9\u90fd\u5b58\u50a8\u6709\u5bf9\u5e94\u7684css\u5c5e\u6027\u3002<\/p>\n<p>4.\u4e00\u65e6\u6e32\u67d3\u6811\u521b\u5efa\u597d\u4e86\uff0c\u6d4f\u89c8\u5668\u5c31\u53ef\u4ee5\u6839\u636e\u6e32\u67d3\u6811\u76f4\u63a5\u628a\u9875\u9762\u7ed8\u5236\u5230\u5c4f\u5e55\u4e0a\u3002<\/p>\n<p>\u4ee5\u4e0a\u56db\u4e2a\u6b65\u9aa4\u5e76\u4e0d\u662f\u4e00\u6b21\u6027\u987a\u5e8f\u5b8c\u6210\u7684\u3002\u5982\u679cDOM\u6216\u8005CSSOM\u88ab\u4fee\u6539\uff0c\u4ee5\u4e0a\u8fc7\u7a0b\u4f1a\u88ab\u91cd\u590d\u6267\u884c\u3002\u5b9e\u9645\u4e0a\uff0cCSS\u548cJavaScript\u5f80\u5f80\u4f1a\u591a\u6b21\u4fee\u6539DOM\u6216\u8005CSSOM\u3002<\/p>\n<h2>\u8bf4\u4e00\u4e0bCORS\uff1f<\/h2>\n<p>CORS\u662f\u4e00\u79cd\u65b0\u6807\u51c6\uff0c\u652f\u6301\u540c\u6e90\u901a\u4fe1\uff0c\u4e5f\u652f\u6301\u8de8\u57df\u901a\u4fe1\u3002fetch\u662f\u5b9e\u73b0CORS\u901a\u4fe1\u7684<\/p>\n<h2>\u5982\u4f55\u4e2d\u65adajax\u8bf7\u6c42\uff1f<\/h2>\n<p>\u4e00\u79cd\u662f\u8bbe\u7f6e\u8d85\u65f6\u65f6\u95f4\u8ba9ajax\u81ea\u52a8\u65ad\u5f00\uff0c\u53e6\u4e00\u79cd\u662f\u624b\u52a8\u505c\u6b62ajax\u8bf7\u6c42\uff0c\u5176\u6838\u5fc3\u662f\u8c03\u7528XML\u5bf9\u8c61\u7684abort\u65b9\u6cd5\uff0cajax.abort()<\/p>\n<h2>\u8bf4\u4e00\u4e0b\u4e8b\u4ef6\u4ee3\u7406\uff1f<\/h2>\n<p>\u4e8b\u4ef6\u59d4\u6258\u662f\u6307\u5c06\u4e8b\u4ef6\u7ed1\u5b9a\u5230\u76ee\u6807\u5143\u7d20\u7684\u7236\u5143\u7d20\u4e0a\uff0c\u5229\u7528\u5192\u6ce1\u673a\u5236\u89e6\u53d1\u8be5\u4e8b\u4ef6<\/p>\n<pre><code class=\"language-js\" lang=\"js\">ulEl.addEventListener('click', function(e){\r\n    var target = event.target || event.srcElement;\r\n    if(!!target &amp;&amp; target.nodeName.toUpperCase() === \"LI\"){\r\n        console.log(target.innerHTML);\r\n    }\r\n}, false);\r\n<\/code><\/pre>\n<h2>target\u3001currentTarget\u7684\u533a\u522b\uff1f<\/h2>\n<p>currentTarget\u5f53\u524d\u6240\u7ed1\u5b9a\u4e8b\u4ef6\u7684\u5143\u7d20<\/p>\n<p>target\u5f53\u524d\u88ab\u70b9\u51fb\u7684\u5143\u7d20<\/p>\n<h2>\u8bf4\u4e00\u4e0b\u5b8f\u4efb\u52a1\u548c\u5fae\u4efb\u52a1\uff1f<\/h2>\n<ol>\n<li>\u5b8f\u4efb\u52a1\uff1a\u5f53\u524d\u8c03\u7528\u6808\u4e2d\u6267\u884c\u7684\u4efb\u52a1\u79f0\u4e3a\u5b8f\u4efb\u52a1\u3002\uff08\u4e3b\u4ee3\u7801\u5feb\uff0c\u5b9a\u65f6\u5668\u7b49\u7b49\uff09\u3002<\/li>\n<li>\u5fae\u4efb\u52a1\uff1a \u5f53\u524d\uff08\u6b64\u6b21\u4e8b\u4ef6\u5faa\u73af\u4e2d\uff09\u5b8f\u4efb\u52a1\u6267\u884c\u5b8c\uff0c\u5728\u4e0b\u4e00\u4e2a\u5b8f\u4efb\u52a1\u5f00\u59cb\u4e4b\u524d\u9700\u8981\u6267\u884c\u7684\u4efb\u52a1\u4e3a\u5fae\u4efb\u52a1\u3002\uff08\u53ef\u4ee5\u7406\u89e3\u4e3a\u56de\u8c03\u4e8b\u4ef6\uff0cpromise.then\uff0cproness.nextTick\u7b49\u7b49\uff09\u3002<\/li>\n<li>\u5b8f\u4efb\u52a1\u4e2d\u7684\u4e8b\u4ef6\u653e\u5728callback queue\u4e2d\uff0c\u7531\u4e8b\u4ef6\u89e6\u53d1\u7ebf\u7a0b\u7ef4\u62a4\uff1b\u5fae\u4efb\u52a1\u7684\u4e8b\u4ef6\u653e\u5728\u5fae\u4efb\u52a1\u961f\u5217\u4e2d\uff0c\u7531js\u5f15\u64ce\u7ebf\u7a0b\u7ef4\u62a4\u3002<\/li>\n<\/ol>\n<h2>\u8bf4\u4e00\u4e0b\u7ee7\u627f\u7684\u51e0\u79cd\u65b9\u5f0f\u53ca\u4f18\u7f3a\u70b9\uff1f<\/h2>\n<blockquote><p>\u8bf4\u6bd4\u8f83\u7ecf\u5178\u7684\u51e0\u79cd\u7ee7\u627f\u65b9\u5f0f\u5e76\u6bd4\u8f83\u4f18\u7f3a\u70b9\u5c31\u53ef\u4ee5\u4e86<\/p><\/blockquote>\n<ol>\n<li>\u501f\u7528\u6784\u9020\u51fd\u6570\u7ee7\u627f\uff0c\u4f7f\u7528call\u6216apply\u65b9\u6cd5\uff0c\u5c06\u7236\u5bf9\u8c61\u7684\u6784\u9020\u51fd\u6570\u7ed1\u5b9a\u5728\u5b50\u5bf9\u8c61\u4e0a<\/li>\n<li>\u539f\u578b\u7ee7\u627f\uff0c\u5c06\u5b50\u5bf9\u8c61\u7684prototype\u6307\u5411\u7236\u5bf9\u8c61\u7684\u4e00\u4e2a\u5b9e\u4f8b<\/li>\n<li>\u7ec4\u5408\u7ee7\u627f<\/li>\n<\/ol>\n<p>\u539f\u578b\u94fe\u7ee7\u627f\u7684\u7f3a\u70b9<\/p>\n<ul>\n<li>\u5b57\u9762\u91cf\u91cd\u5199\u539f\u578b\u4f1a\u4e2d\u65ad\u5173\u7cfb\uff0c\u4f7f\u7528\u5f15\u7528\u7c7b\u578b\u7684\u539f\u578b\uff0c\u5e76\u4e14\u5b50\u7c7b\u578b\u8fd8\u65e0\u6cd5\u7ed9\u8d85\u7c7b\u578b\u4f20\u9012\u53c2\u6570\u3002<\/li>\n<\/ul>\n<p>\u501f\u7528\u6784\u9020\u51fd\u6570\uff08\u7c7b\u5f0f\u7ee7\u627f\uff09<\/p>\n<ul>\n<li>\u501f\u7528\u6784\u9020\u51fd\u6570\u867d\u7136\u89e3\u51b3\u4e86\u521a\u624d\u4e24\u79cd\u95ee\u9898\uff0c\u4f46\u6ca1\u6709\u539f\u578b\uff0c\u5219\u590d\u7528\u65e0\u4ece\u8c08\u8d77\u3002<\/li>\n<\/ul>\n<p>\u7ec4\u5408\u5f0f\u7ee7\u627f<\/p>\n<ul>\n<li>\u7ec4\u5408\u5f0f\u7ee7\u627f\u662f\u6bd4\u8f83\u5e38\u7528\u7684\u4e00\u79cd\u7ee7\u627f\u65b9\u6cd5\uff0c\u5176\u80cc\u540e\u7684\u601d\u8def\u662f\u4f7f\u7528\u539f\u578b\u94fe\u5b9e\u73b0\u5bf9\u539f\u578b\u5c5e\u6027\u548c\u65b9\u6cd5\u7684\u7ee7\u627f\uff0c\u800c\u901a\u8fc7\u501f\u7528\u6784\u9020\u51fd\u6570\u6765\u5b9e\u73b0\u5bf9\u5b9e\u4f8b\u5c5e\u6027\u7684\u7ee7\u627f\u3002\u8fd9\u6837\uff0c\u65e2\u901a\u8fc7\u5728\u539f\u578b\u4e0a\u5b9a\u4e49\u65b9\u6cd5\u5b9e\u73b0\u4e86\u51fd\u6570\u590d\u7528\uff0c\u53c8\u4fdd\u8bc1\u6bcf\u4e2a\u5b9e\u4f8b\u90fd\u6709\u5b83\u81ea\u5df1\u7684\u5c5e\u6027\u3002<\/li>\n<\/ul>\n<h2>\u8bf4\u4e00\u4e0b\u95ed\u5305\uff1f<\/h2>\n<p>\u95ed\u5305\u7684\u5b9e\u8d28\u662f\u56e0\u4e3a\u51fd\u6570\u5d4c\u5957\u800c\u5f62\u6210\u7684\u4f5c\u7528\u57df\u94fe<\/p>\n<p>\u95ed\u5305\u7684\u5b9a\u4e49\u5373\uff1a\u51fd\u6570 <code>A<\/code> \u5185\u90e8\u6709\u4e00\u4e2a\u51fd\u6570 <code>B<\/code>\uff0c\u51fd\u6570 <code>B<\/code> \u53ef\u4ee5\u8bbf\u95ee\u5230\u51fd\u6570 <code>A<\/code> \u4e2d\u7684\u53d8\u91cf\uff0c\u90a3\u4e48\u51fd\u6570 <code>B<\/code> \u5c31\u662f\u95ed\u5305<\/p>\n<h2>export\u548cexport default\u7684\u533a\u522b\uff1f<\/h2>\n<p>\u4f7f\u7528\u4e0a\u7684\u4e0d\u540c<\/p>\n<pre><code class=\"language-js\" lang=\"js\">export default  xxx\r\nimport xxx from '.\/'\r\n\r\nexport xxx\r\nimport {xxx} from '.\/'\r\n<\/code><\/pre>\n<h2>\u8bf4\u4e00\u4e0b\u81ea\u5df1\u5e38\u7528\u7684es6\u7684\u529f\u80fd\uff1f<\/h2>\n<blockquote><p>\u6b64\u9898\u662f\u4e00\u9053\u5f00\u653e\u9898\uff0c\u53ef\u4ee5\u81ea\u7531\u56de\u7b54\u3002\u4f46\u8981\u6ce8\u610f\u50cflet\u8fd9\u79cd\u7b80\u5355\u7684\u7528\u6cd5\u5c31\u522b\u8bf4\u4e86\uff0c\u8bf4\u4e00\u4e9b\u7ecf\u5e38\u7528\u5230\u5e76\u6709\u4e00\u5b9a\u9ad8\u5ea6\u7684\u65b0\u529f\u80fd<\/p><\/blockquote>\n<p>\u50cfmodule\u3001class\u3001promise\u7b49\uff0c\u5c3d\u91cf\u8bb2\u7684\u8be6\u7ec6\u4e00\u70b9\u3002<\/p>\n<h2>\u4ec0\u4e48\u662f\u4f1a\u8bddcookie,\u4ec0\u4e48\u662f\u6301\u4e45cookie?<\/h2>\n<p>cookie\u662f\u670d\u52a1\u5668\u8fd4\u56de\u7684\uff0c\u6307\u5b9a\u4e86expire time\uff08\u6709\u6548\u671f\uff09\u7684\u662f\u6301\u4e45cookie,\u6ca1\u6709\u6307\u5b9a\u7684\u662f\u4f1a\u8bddcookie<\/p>\n<h2>\u6570\u7ec4\u53bb\u91cd\uff1f<\/h2>\n<blockquote><p>\u6b64\u9898\u770b\u7740\u7b80\u5355\uff0c\u4f46\u8981\u60f3\u9762\u8bd5\u5b98\u7ed9\u4f60\u9ad8\u5206\u8fd8\u662f\u6709\u96be\u5ea6\u7684\u3002\u81f3\u5c11\u4e5f\u8981\u5199\u51fa\u51e0\u79cd\u65b9\u6cd5<\/p><\/blockquote>\n<p>js<\/p>\n<pre><code class=\"language-js\" lang=\"js\">var arr=['12','32','89','12','12','78','12','32'];\r\n    \/\/ \u6700\u7b80\u5355\u6570\u7ec4\u53bb\u91cd\u6cd5\r\n    function unique1(array){\r\n        var n = []; \/\/\u4e00\u4e2a\u65b0\u7684\u4e34\u65f6\u6570\u7ec4\r\n        for(var i = 0; i &lt; array.length; i++){ \/\/\u904d\u5386\u5f53\u524d\u6570\u7ec4\r\n            if (n.indexOf(array[i]) == -1)\r\n                n.push(array[i]);\r\n        }\r\n        return n;\r\n    }\r\n    arr=unique1(arr);\r\n    \/\/ \u901f\u5ea6\u6700\u5feb\uff0c \u5360\u7a7a\u95f4\u6700\u591a\uff08\u7a7a\u95f4\u6362\u65f6\u95f4\uff09\r\n    function unique2(array){\r\n        var n = {}, r = [], type;\r\n        for (var i = 0; i &lt; array.length; i++) {\r\n            type = typeof array[i];\r\n            if (!n[array[i]]) {\r\n                n[array[i]] = [type];\r\n                r.push(array[i]);\r\n            } else if (n[array[i]].indexOf(type) &lt; 0) {\r\n                n[array[i]].push(type);\r\n                r.push(array[i]);\r\n            }\r\n        }\r\n        return r;\r\n    }\r\n    \/\/\u6570\u7ec4\u4e0b\u6807\u5224\u65ad\u6cd5\r\n    function unique3(array){\r\n        var n = [array[0]]; \/\/\u7ed3\u679c\u6570\u7ec4\r\n        for(var i = 1; i &lt; array.length; i++) { \/\/\u4ece\u7b2c\u4e8c\u9879\u5f00\u59cb\u904d\u5386\r\n            if (array.indexOf(array[i]) == i) \r\n                n.push(array[i]);\r\n        }\r\n        return n;\r\n    }\r\n<\/code><\/pre>\n<p>es6<\/p>\n<pre><code class=\"language-js\" lang=\"js\">es6\u65b9\u6cd5\u6570\u7ec4\u53bb\u91cd\r\narr=[...new Set(arr)];\r\nes6\u65b9\u6cd5\u6570\u7ec4\u53bb\u91cd\uff0c\u7b2c\u4e8c\u79cd\u65b9\u6cd5\r\nfunction dedupe(array) {\r\n  return Array.from(new Set(array));       \/\/Array.from()\u80fd\u628aset\u7ed3\u6784\u8f6c\u6362\u4e3a\u6570\u7ec4\r\n}\r\n<\/code><\/pre>\n<h2>get\u3001post\u7684\u533a\u522b<\/h2>\n<blockquote><p>\u6b64\u9898\u6bd4\u8f83\u7b80\u5355\uff0c\u4f46\u4e00\u5b9a\u8981\u56de\u7b54\u7684\u5168\u9762<\/p><\/blockquote>\n<p>1.get\u4f20\u53c2\u65b9\u5f0f\u662f\u901a\u8fc7\u5730\u5740\u680fURL\u4f20\u9012\uff0c\u662f\u53ef\u4ee5\u76f4\u63a5\u770b\u5230get\u4f20\u9012\u7684\u53c2\u6570\uff0cpost\u4f20\u53c2\u65b9\u5f0f\u53c2\u6570URL\u4e0d\u53ef\u89c1\uff0cget\u628a\u8bf7\u6c42\u7684\u6570\u636e\u5728URL\u540e\u901a\u8fc7\uff1f\u8fde\u63a5\uff0c\u901a\u8fc7&amp;\u8fdb\u884c\u53c2\u6570\u5206\u5272\u3002psot\u5c06\u53c2\u6570\u5b58\u653e\u5728HTTP\u7684\u5305\u4f53\u5185<\/p>\n<p>2.get\u4f20\u9012\u6570\u636e\u662f\u901a\u8fc7URL\u8fdb\u884c\u4f20\u9012\uff0c\u5bf9\u4f20\u9012\u7684\u6570\u636e\u957f\u5ea6\u662f\u53d7\u5230URL\u5927\u5c0f\u7684\u9650\u5236\uff0cURL\u6700\u5927\u957f\u5ea6\u662f2048\u4e2a\u5b57\u7b26\u3002post\u6ca1\u6709\u957f\u5ea6\u9650\u5236<\/p>\n<p>3.get\u540e\u9000\u4e0d\u4f1a\u6709\u5f71\u54cd\uff0cpost\u540e\u9000\u4f1a\u91cd\u65b0\u8fdb\u884c\u63d0\u4ea4<\/p>\n<p>4.get\u8bf7\u6c42\u53ef\u4ee5\u88ab\u7f13\u5b58\uff0cpost\u4e0d\u53ef\u4ee5\u88ab\u7f13\u5b58<\/p>\n<p>5.get\u8bf7\u6c42\u53eaURL\u7f16\u7801\uff0cpost\u652f\u6301\u591a\u79cd\u7f16\u7801\u65b9\u5f0f<\/p>\n<p>6.get\u8bf7\u6c42\u7684\u8bb0\u5f55\u4f1a\u7559\u5728\u5386\u53f2\u8bb0\u5f55\u4e2d\uff0cpost\u8bf7\u6c42\u4e0d\u4f1a\u7559\u5728\u5386\u53f2\u8bb0\u5f55<\/p>\n<p>7.get\u53ea\u652f\u6301ASCII\u5b57\u7b26\uff0cpost\u6ca1\u6709\u5b57\u7b26\u7c7b\u578b\u9650\u5236<\/p>\n<h2>\u4f60\u6240\u77e5\u9053\u7684http\u7684\u54cd\u5e94\u7801\u53ca\u542b\u4e49\uff1f<\/h2>\n<blockquote><p>\u6b64\u9898\u6709\u8fc7\u5f00\u53d1\u7ecf\u9a8c\u7684\u90fd\u77e5\u9053\u51e0\u4e2a\uff0c\u4f46\u8fd8\u662f\u90a3\u53e5\u8bdd\uff0c\u4e00\u5b9a\u8981\u56de\u7b54\u7684\u8be6\u7ec6\u4e14\u5168\u9762\u3002<\/p><\/blockquote>\n<p>1xx(\u4e34\u65f6\u54cd\u5e94)<\/p>\n<p>100: \u8bf7\u6c42\u8005\u5e94\u5f53\u7ee7\u7eed\u63d0\u51fa\u8bf7\u6c42\u3002<\/p>\n<p>101(\u5207\u6362\u534f\u8bae) \u8bf7\u6c42\u8005\u5df2\u8981\u6c42\u670d\u52a1\u5668\u5207\u6362\u534f\u8bae\uff0c\u670d\u52a1\u5668\u5df2\u786e\u8ba4\u5e76\u51c6\u5907\u8fdb\u884c\u5207\u6362\u3002<\/p>\n<p>2xx(\u6210\u529f)<\/p>\n<p>200\uff1a\u6b63\u786e\u7684\u8bf7\u6c42\u8fd4\u56de\u6b63\u786e\u7684\u7ed3\u679c<\/p>\n<p>201\uff1a\u8868\u793a\u8d44\u6e90\u88ab\u6b63\u786e\u7684\u521b\u5efa\u3002\u6bd4\u5982\u8bf4\uff0c\u6211\u4eec POST \u7528\u6237\u540d\u3001\u5bc6\u7801\u6b63\u786e\u521b\u5efa\u4e86\u4e00\u4e2a\u7528\u6237\u5c31\u53ef\u4ee5\u8fd4\u56de 201\u3002<\/p>\n<p>202\uff1a\u8bf7\u6c42\u662f\u6b63\u786e\u7684\uff0c\u4f46\u662f\u7ed3\u679c\u6b63\u5728\u5904\u7406\u4e2d\uff0c\u8fd9\u65f6\u5019\u5ba2\u6237\u7aef\u53ef\u4ee5\u901a\u8fc7\u8f6e\u8be2\u7b49\u673a\u5236\u7ee7\u7eed\u8bf7\u6c42\u3002<\/p>\n<p>3xx(\u5df2\u91cd\u5b9a\u5411)<\/p>\n<p>300\uff1a\u8bf7\u6c42\u6210\u529f\uff0c\u4f46\u7ed3\u679c\u6709\u591a\u79cd\u9009\u62e9\u3002<\/p>\n<p>301\uff1a\u8bf7\u6c42\u6210\u529f\uff0c\u4f46\u662f\u8d44\u6e90\u88ab\u6c38\u4e45\u8f6c\u79fb\u3002<\/p>\n<p>303\uff1a\u4f7f\u7528 GET \u6765\u8bbf\u95ee\u65b0\u7684\u5730\u5740\u6765\u83b7\u53d6\u8d44\u6e90\u3002<\/p>\n<p>304\uff1a\u8bf7\u6c42\u7684\u8d44\u6e90\u5e76\u6ca1\u6709\u88ab\u4fee\u6539\u8fc7<\/p>\n<p>4xx(\u8bf7\u6c42\u9519\u8bef)<\/p>\n<p>400\uff1a\u8bf7\u6c42\u51fa\u73b0\u9519\u8bef\uff0c\u6bd4\u5982\u8bf7\u6c42\u5934\u4e0d\u5bf9\u7b49\u3002<\/p>\n<p>401\uff1a\u6ca1\u6709\u63d0\u4f9b\u8ba4\u8bc1\u4fe1\u606f\u3002\u8bf7\u6c42\u7684\u65f6\u5019\u6ca1\u6709\u5e26\u4e0a Token \u7b49\u3002<\/p>\n<p>402\uff1a\u4e3a\u4ee5\u540e\u9700\u8981\u6240\u4fdd\u7559\u7684\u72b6\u6001\u7801\u3002<\/p>\n<p>403\uff1a\u8bf7\u6c42\u7684\u8d44\u6e90\u4e0d\u5141\u8bb8\u8bbf\u95ee\u3002\u5c31\u662f\u8bf4\u6ca1\u6709\u6743\u9650\u3002<\/p>\n<p>404\uff1a\u8bf7\u6c42\u7684\u5185\u5bb9\u4e0d\u5b58\u5728\u3002<\/p>\n<p>5xx(\u670d\u52a1\u5668\u9519\u8bef)<\/p>\n<p>500\uff1a\u670d\u52a1\u5668\u9519\u8bef\u3002<\/p>\n<p>501\uff1a\u8bf7\u6c42\u8fd8\u6ca1\u6709\u88ab\u5b9e\u73b0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9762\u8bd5\u4e86\u51e0\u5bb6\u516c\u53f8\uff0c\u9762\u8bd5\u9898\u6574\u7406\u4e00\u756a\uff0c\u5e0c\u671b\u6709\u5e2e\u52a9\uff0c\u7b54\u6848\u4ec5\u4f9b\u53c2\u8003\u3002 \u4e00\u9762\u90fd\u6bd4\u8f83\u504f\u57fa\u7840\uff0c\u5927\u90e8\u5206\u9898\u76ee\u90fd\u4f1a\uff0c\u5373\u4f7f\u4e0d\u4f1a\u4e5f\u4f3c\u66fe\u76f8 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[105,128],"tags":[],"_links":{"self":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/2888"}],"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=2888"}],"version-history":[{"count":4,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/2888\/revisions"}],"predecessor-version":[{"id":2892,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/2888\/revisions\/2892"}],"wp:attachment":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2888"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2888"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2888"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}