{"id":10085,"date":"2018-12-11T16:02:31","date_gmt":"2018-12-11T08:02:31","guid":{"rendered":"https:\/\/www.awoo.com.tw\/blog\/?p=10085"},"modified":"2023-09-05T18:06:39","modified_gmt":"2023-09-05T10:06:39","slug":"javascript-introduction","status":"publish","type":"post","link":"https:\/\/www.awoo.ai\/zh-hant\/blog\/javascript-introduction\/","title":{"rendered":"\u5beb\u7d66\u7a0b\u5f0f\u9ebb\u74dc\u7684JavaScript\u57fa\u790e\u4ecb\u7d39\uff0c\u8ddf\u5de5\u7a0b\u5e2b\u6e9d\u901a\u96f6\u969c\u7919"},"content":{"rendered":"\n<p>JavaScript\u5341\u5206\u5e38\u898b\u65bc\u7db2\u9801\u8a2d\u8a08\uff0c\u662f\u4e00\u7a2e\u7528\u4f86\u5448\u73fe\u7db2\u9801\u52d5\u614b\u6548\u679c\u7684\u7a0b\u5f0f\u8a9e\u8a00\uff0c\u50cf\u662f\u6211\u5011\u5728\u96fb\u5546\u7db2\u7ad9\u9032\u884c\u8cfc\u7269\u6642\uff0c\u628a\u5546\u54c1\u52a0\u5165\u8cfc\u7269\u8eca\u6642\uff0c\u8cfc\u7269\u8eca\u5c31\u6703\u51fa\u73fe\u300c\u5546\u54c1\u5df2\u9032\u5165\u8cfc\u7269\u8eca\u300d\u7684\u8a0a\u606f\u63d0\u9192\u6548\u679c\u3002\u6709\u8a31\u591a\u4eba\u6703\u5c07JavaScript\u8207Java\u641e\u6df7\uff0c\u8a8d\u70ba\u4ed6\u5011\u662f\u985e\u4f3c\u7684\u8a9e\u8a00\uff0c\u4f46\u662f\u4ed6\u5011\u5c31\u8ddf\u72d7\u548c\u71b1\u72d7\u4e00\u6a23\uff0c\u662f\u5b8c\u5168\u4e0d\u4e00\u6a23\u7684\u6771\u897f\u3002<br>JavaScript\u662f\u7531\u524d\u7db2\u666f(Netscape)\u5de5\u7a0b\u5e2bBrendan Eich\u6240\u767c\u660e\uff0c\u800c\u807d\u8aaa\u7576\u521d\u50c5\u50c5\u82b1\u4e8610\u5929\u5c31\u5b8c\u6210\u3002JavaScript\u8a2d\u8a08\u51fa\u4f86\u76ee\u7684\u5c31\u662f\u8981\u6bd4Java\u9084\u8981\u66f4\u5bb9\u6613\u8b93\u4eba\u7406\u89e3\uff0c\u8b93\u66f4\u591a\u7db2\u9801\u8a2d\u8a08\u5e2b\u80fd\u5920\u4e0a\u624b\uff0c\u9019\u5c31\u8b93JavaScript\u8a2d\u8a08\u662f\u4e00\u7a2e\u76f4\u8b6f\u5f0f(Interpreted language)\u3001\u7269\u4ef6\u5c0e\u5411(Object-based)\u7684\u7a0b\u5f0f\u8a9e\u8a00\uff0c\u9019\u662f\u4ec0\u9ebc\u610f\u601d\u5462\uff1f\u7c21\u55ae\u4f86\u8aaa\uff0c\u5c31\u662fJavaScript\u5167\u5efa\u4e00\u4e9b\u529f\u80fd\u7bc4\u672c\uff0c\u53ea\u8981\u900f\u904e\u4e0b\u6307\u4ee4\u65b9\u5f0f\uff0c\u5c31\u80fd\u5920\u628a\u529f\u80fd\u7bc4\u672c\u53eb\u51fa\u4f86\u5354\u52a9\u904b\u4f5c\u3002<br><img decoding=\"async\" src=\"https:\/\/media.awoo.ai\/live\/wp-content\/uploads\/JavaScript.jpg\" alt=\"\" width=\"696\" height=\"364\"><br>\u4f46\u7531\u65bcJavaScript\u5728\u5f88\u77ed\u7684\u6642\u9593\u88ab\u958b\u767c\uff0c\u6240\u4ee5\u5728\u525b\u63a8\u51fa\u7684\u6642\u5019\uff0c\u6709\u8a31\u591a\u529f\u80fd\u9084\u6c92\u6709\u5b8c\u5584\uff0c\u6240\u4ee5\u4e26\u6c92\u6709\u88ab\u8a8d\u70ba\u53ef\u4ee5\u6210\u70ba\u4e3b\u6d41\u7a0b\u5f0f\u8a9e\u8a00\u3002\u4f46\u662f\u96a8\u8005\u7248\u672c\u7684\u6f14\u9032\uff0c\u529f\u80fd\u8d8a\u4f86\u8d8a\u5b8c\u5584\uff0c\u9084\u6709\u8a31\u591a\u50cf\u662fJQuery\u3001React.js\u7b49\u67b6\u69cb\u7684\u958b\u767c\uff0c\u8b93JavaScript\u5df2\u7d93\u8b8a\u621021\u4e16\u7d00\u7db2\u9801\u8a2d\u8a08\u5e2b\uff0c\u5728\u958b\u767c\u7db2\u7ad9\u7684\u6642\u5019\u5fc5\u5099\u7684\u80fd\u529b\u3002\u7531\u65bcJavaScript\u5bb9\u6613\u7406\u89e3\u7684\u7279\u6027\uff0c\u53f2\u4e39\u4f5b\u5927\u5b78\u5df2\u7d93\u5c07JavaScript\u53d6\u4ee3Java\uff0c\u6210\u70ba\u7a0b\u5f0f\u8a2d\u8a08\u7684\u5165\u9580\u6559\u6750\u3002\u73fe\u5728\uff0c\u5c31\u8b93awoo\u4ecb\u7d39JavaScript\u7684\u7279\u6027\u3001\u61c9\u7528\u8207\u5b78\u7fd2\u8cc7\u6e90\u3002<\/p>\n\n\n\n<div 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class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u73fe\u5728\u8a31\u591a\u7db2\u7ad9\u5206\u6790\u90fd\u63a1\u7528JavaScript\u7684\u65b9\u6cd5\uff0c\u4f5c\u70ba\u884c\u92b7\u4eba\u54e1\uff0c\u4e86\u89e3JavaScript\u5c31\u53ef\u4ee5\u77e5\u9053\u8981\u5982\u4f55\u8ffd\u8e64\u4f7f\u7528\u8005\u5728\u7db2\u7ad9\u4e0a\u884c\u70ba\u3002\u5047\u8a2d\u8001\u95c6\u4eca\u5929\u60f3\u8981\u77e5\u9053\u54ea\u4e00\u500b\u7db2\u9801\u662f\u6700\u5438\u5f15\u4eba\uff0c\u5982\u679c\u4e0d\u61c2JavaScript\uff0c\u5c31\u7121\u6cd5\u544a\u8a34\u5de5\u7a0b\u5e2b\u60f3\u8981\u8ffd\u8e64\u4f7f\u7528\u8005\u54ea\u4e00\u7a2e\u884c\u70ba\u3002\u6240\u4ee5\u4f60\u8d8a\u4e86\u89e3JavaScript\uff0c\u4f60\u5c31\u6703\u77e5\u9053\u54ea\u4e9b\u884c\u70ba\u662f\u53ef\u4ee5\u88ab\u8ffd\u8e64\uff0c\u9019\u6a23\u4f60\u5c31\u53ef\u4ee5\u66f4\u5177\u9ad4\u5730\u544a\u8a34\u5de5\u7a0b\u5e2b\u4f60\u60f3\u8981\u5206\u6790\u7684\u884c\u70ba\uff0c\u4f8b\u5982\uff1a\u4f60\u53ef\u4ee5\u544a\u8a34\u5de5\u7a0b\u5e2b\uff0c\u8acb\u4ed6\u5011\u5728GTM\u8a2d\u5b9a\u5168\u7ad9\u6ed1\u9f20\u505c\u7559\u4e8b\u4ef6(onmouseover)\u8ffd\u8e64\uff0c\u7d00\u9304\u4f7f\u7528\u8005\u505c\u7559\u5728\u7279\u5b9a\u7db2\u9801\u6642\u9593\u9577\u5ea6\u3002\u5982\u679c\u8001\u95c6\u60f3\u77e5\u9053\u54ea\u4e00\u500b\u5546\u54c1\u662f\u6700\u71b1\u9580\u7684\uff0c\u4f60\u5c31\u53ef\u4ee5\u8acb\u5de5\u7a0b\u5e2b\u8a2d\u5b9a\u5546\u54c1\u7684\u6ed1\u9f20\u9ede\u64ca\u4e8b\u4ef6(onclick)\uff0c\u7d00\u9304\u5546\u54c1\u88ab\u9ede\u64ca\u7684\u6b21\u6578\uff0c\u9019\u6a23\u4e0d\u50c5\u53ef\u4ee5\u5927\u5927\u6e1b\u5c11\u8207\u5de5\u7a0b\u5e2b\u7684\u6e9d\u901a\u6210\u672c\uff0c\u53c8\u53ef\u4ee5\u9806\u5229\u5730\u5b8c\u6210\u8001\u95c6\u4ea4\u4ee3\u7684\u4efb\u52d9\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"JavaScript%E7%9A%84%E4%BD%BF%E7%94%A8%E6%96%B9%E5%BC%8F\"><\/span>JavaScript\u7684\u4f7f\u7528\u65b9\u5f0f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u958b\u59cb\u4ecb\u7d39JavaScript\u4e4b\u524d\uff0c\u52d9\u5fc5\u5148\u4e86\u89e3\u7db2\u9801html\u7684\u57fa\u672c\u6982\u5ff5\uff0c\u5728\u5beb\u7d66<a href=\"https:\/\/www.awoo.com.tw\/blog\/htmlseo\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u884c\u92b7\u4eba\u7684 HTML \u5165\u9580\u57fa\u790e\u6559\u5b78\uff0c\u5b78\u7fd2 SEO 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height=\"124\"><br>html\u8207JavaScript\u7684\u4e92\u52d5\u95dc\u4fc2<br>\u800c\u4eca\u5929\u53ea\u8981\u4f7f\u7528\u4e00\u822c\u6587\u5b57\u7de8\u8f2f\u5668\uff0c\u4f8b\u5982\u8a18\u4e8b\u672c\uff0c\u5c31\u53ef\u4ee5\u7de8\u8f2f\u64b0\u5bebJavaScript\uff0c\u53ea\u8981\u5c07\u5beb\u597d\u7684\u6a94\u6848\uff0c\u526f\u6a94\u540d\u547d\u540d\u6210.js\u5373\u53ef\uff0c\u6216\u8005\u662f\u76f4\u63a5\u5beb\u5728html\u6a94\u6848\u88e1\u9762\u3002\u6216\u8005\u53ef\u4ee5\u4e0b\u8f09\u524d\u7aef\u958b\u767c\u795e\u5668sublime text\uff0c\u53ef\u4ee5\u5354\u52a9\u4f60\u66f4\u4fbf\u5229\u5beb\u51faJavaScript\u3002\u4e00\u822c\u4f86\u8aaa\uff0c\u5728html\u6a94\u6848\u5167\u7684JavaScript\u64b0\u5beb\u65b9\u5f0f\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5beb\u5728&lt;head&gt;&lt;\/head&gt;\uff1a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">&lt;!DOCTYPE html&gt;\n   &lt;html lang=\"en\"&gt;\n    &lt;head&gt;\n     &lt;meta charset=\"UTF-8\"&gt;\n      &lt;title&gt;Document&lt;\/title&gt;\n   &lt;script&gt;\n       alert(\"Hello World\")\n   &lt;\/script&gt;\n&lt;\/head&gt;<\/pre>\n\n\n\n<p>\u9019\u6a23\u4f7f\u7528chrome\u700f\u89bd\u5668\u6253\u958b\uff0c\u6703\u51fa\u73fe\u63d0\u793a\u8a0a\u606f\u6846\uff0c\u8a0a\u606f\u6587\u5b57\u70ba\u300cHello World\u300d<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>\u4e5f\u53ef\u4ee5\u900f\u904e\u5916\u90e8\u5f15\u5165\u7684\u65b9\u5f0f\uff0c\u8b93js\u6a94\u6848\u57f7\u884c\uff1a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">&lt;!DOCTYPE html&gt;\n&lt;html lang=\"en\"&gt;\n&lt;head&gt;\n    &lt;meta charset=\"UTF-8\"&gt;\n    &lt;title&gt;Document&lt;\/title&gt;\n    &lt;script type=\"text\/javascript\" src=\"js\/main.js\"&gt;&lt;\/script&gt;\n&lt;\/head&gt;<\/pre>\n\n\n\n<p>\u900f\u904e\u5916\u90e8\u5f15\u5165\u7684\u65b9\u5f0f\uff0c\u8b93js\u6a94\u6848\u57f7\u884c<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"JavaScript%E5%9F%BA%E6%9C%AC%E5%8A%9F%E8%83%BD%E4%BB%8B%E7%B4%B9\"><\/span>JavaScript\u57fa\u672c\u529f\u80fd\u4ecb\u7d39<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E9%81%8B%E7%AE%97%E5%AD%90%E3%80%81%E8%AE%8A%E6%95%B8%E3%80%81%E5%87%BD%E6%95%B8\"><\/span>\u904b\u7b97\u5b50\u3001\u8b8a\u6578\u3001\u51fd\u6578<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u7a0b\u5f0f\u8a9e\u8a00\u7684\u597d\u8655\u5c31\u662f\u5728\u904b\u7b97\u904e\u7a0b\u901f\u5ea6\u975e\u5e38\u5feb\uff0c\u4f46\u662f\u8981\u8b93\u7a0b\u5f0f\u8a9e\u8a00\u7406\u89e3\u8a08\u7b97\u516c\u5f0f\uff0c\u5247\u8981\u900f\u904e\u904b\u7b97\u5b50\u3002\u904b\u7b97\u5b50\u662f\u4e00\u7a2e\u904b\u7b97\u7b26\u865f\uff0c\u57fa\u672c\u6709\u8ce6\u503c\u904b\u7b97\u5b50\u3001\u7b97\u6578\u904b\u7b97\u5b50\u3001\u6bd4\u8f03\u904b\u7b97\u5b50\u3001\u908f\u8f2f\u904b\u7b97\u5b50\uff0c\u50cf\u662f\u8ce6\u503c\u904b\u7b97\u5b50\u5c31\u662f\u4ee5\u300c=\u300d\u7b26\u865f\u4f86\u8868\u793a\uff0c\u53ef\u6307\u5b9a\u7279\u5b9a\u503c\u5230\u6307\u5b9a\u7684\u8b8a\u6578\u88e1\u9762\uff0c\u4ee5\u4e0b\u70ba\u5404\u904b\u7b97\u5b50\u7bc4\u4f8b\uff1a<br>1.\u8ce6\u503c\u904b\u7b97\u5b50( \u7b49\u65bc= ) \uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var name=\"Tom\";<\/pre>\n\n\n\n<p>2.\u7b97\u6578\u904b\u7b97\u5b50 (\u52a0+ \u6e1b &#8211; \u4e58 * \u9664 \/ )<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var sum=1+3;<\/pre>\n\n\n\n<p>3.\u6bd4\u8f03\u904b\u7b97\u5b50(\u5927\u65bc&gt; \u5c0f\u65bc&lt;)<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var age=23;\n    var result=age&gt;20;\n    \/\/ result\uff1atrue\n    console.log(result);<\/pre>\n\n\n\n<p>4.\u908f\u8f2f\u904b\u7b97\u5b50(and &amp;, OR |)\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var a=true;\nvar b=true;\n    var logic=a &amp;&amp; b;\n    \/\/ logic:true\n    console.log(logic);<\/pre>\n\n\n\n<p>\u8b8a\u6578\u5c31\u662f\u5c07\u6307\u5b9a\u503c\u6307\u5b9a\u5728\u7279\u5b9a\u7a7a\u9593\uff0c\u5c31\u597d\u50cf\u5728\u5716\u66f8\u9928\u5167\uff0c\u5c07\u7279\u5b9a\u7684\u66f8\u672c\u653e\u5728\u6307\u5b9a\u66f8\u67b6\u4e0a\uff0c\u540c\u6642\u53ef\u4ee5\u4efb\u610f\u547d\u540d\u8b8a\u6578\u7684\u540d\u7a31\uff0c\u50cf\u662f\u524d\u6587\u8ce6\u503c\u904b\u7b97\u5b50\u4e2d\u7684\u300cname\u300d\u5c31\u662f\u4e00\u7a2e\u8b8a\u6578\u547d\u540d\uff0c\u8b8a\u6578\u5728JavaScript\u4e2d\u662f\u6709\u5206\u70ba\u300c\u5168\u57df\u8b8a\u6578\u300d\u8207\u300c\u5340\u57df\u8b8a\u6578\u300d\uff0c\u5168\u57df\u8b8a\u6578\u57fa\u672c\u4e0a\u5728\u5b9a\u7fa9\u5b8c\uff0c\u5c31\u53ef\u4ee5\u5728\u6a94\u6848\u4e2d\u4efb\u4f55\u4e00\u8655\u4f7f\u7528\uff0c\u5340\u57df\u8b8a\u6578\u5247\u662f\u6307\u5728\u7279\u5b9a\u529f\u80fd\u5167\u5b9a\u7fa9\u5f8c\uff0c\u7bc4\u570d\u5c31\u9650\u5b9a\u5728\u8a72\u529f\u80fd\u5167\uff0c\u4e00\u65e6\u51fa\u4e86\u9019\u529f\u80fd\u6a21\u7d44\u5916\uff0c\u5340\u57df\u8b8a\u6578\u5c31\u4e0d\u80fd\u4f7f\u7528\u3002<br>\u65e2\u7136JavaScript\u53ef\u904b\u7b97\u3001\u4e5f\u53ef\u4ee5\u81ea\u5b9a\u7fa9\u8b8a\u6578\uff0c\u90a3\u5c07\u9019\u4e9b\u529f\u80fd\u7d71\u6574\u5728\u4e00\u8d77\u4f7f\u7528\u7684\u8a71\uff0c\u5c31\u53ef\u4ee5\u767c\u63ee\u66f4\u597d\u7684\u6548\u679c\uff0c\u9019\u6a23\u6574\u5408\u529f\u80fd\u5c31\u53eb\u505a\u51fd\u6578\u3002\u51fd\u6578(function)\u53ef\u4ee5\u5c07\u4e00\u7a0b\u5f0f\u5340\u584a\u7684\u529f\u80fd\uff0c\u900f\u904e\u53c3\u6578\u7684\u50b3\u905e\uff0c\u7522\u51fa\u9810\u671f\u7684\u7d50\u679c\uff0c\u9019\u5728JavaScript\u7684\u7a0b\u5f0f\u8a2d\u8a08\u4e2d\u626e\u6f14\u975e\u5e38\u91cd\u8981\u7684\u89d2\u8272\u3002<br>\u51fd\u5f0f\u5ba3\u544a\u901a\u5e38\u5305\u542b\u4e09\u500b\u90e8\u5206\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u51fd\u5f0f\u540d\u7a31\uff0c\u4f8b\u5982\u4e0b\u5716\u300csum\u300d<\/li>\n\n\n\n<li>\u53c3\u6578(argument)\uff0c\u4f4d\u7f6e\u5728\u51fd\u5f0f\u7684()\u5167\uff0c\u4e0b\u5716\u300ca\u300d\u3001\u300cb\u300d\u5247\u662f\u53c3\u6578<\/li>\n\n\n\n<li>\u53ef\u91cd\u8907\u57f7\u884c\u7684\u5340\u584a\u5167\uff0c\u4f4d\u7f6e\u5728\u51fd\u5f0f\u7684{}\u5167<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">function sum(a,b) {\n    result=a*b;\n    return result;\n}\nsum(5,4)<\/pre>\n\n\n\n<p>\u51fd\u5f0f\u6703\u900f\u904ereturn\u7684\u529f\u80fd\u5c07\u503c\u56de\u50b3\uff0c\u56e0\u6b64\u4e0bsum(5,4)\u6307\u4ee4\u6642\uff0c\u5c31\u6703\u5f97\u5230\u6578\u5b5720\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%B5%81%E7%A8%8B%E6%8E%A7%E5%88%B6\"><\/span>\u6d41\u7a0b\u63a7\u5236<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>JavaScript\u5728\u57f7\u884c\u7db2\u9801\u4e0a\u7684\u52d5\u756b\u7279\u6548\u6642\uff0c\u900f\u904e\u6d41\u7a0b\u63a7\u5236\u53ef\u4ee5\u6c7a\u5b9a\u52d5\u756b\u7269\u4ef6\u51fa\u73fe\u7684\u5148\u5f8c\u9806\u5e8f\uff0c\u8b93\u9019\u4e9b\u52d5\u756b\u7269\u4ef6\u90fd\u53ef\u4ee5\u6309\u7167\u5beb\u597d\u7684\u8173\u672c\u51fa\u73fe\u3002\u6d41\u7a0b\u63a7\u5236\u6307\u4ee4\u662f\u900f\u904e\u689d\u4ef6\u5f0f\u4ee5\u53ca\u8ff4\u5708\u4f86\u57f7\u884c\u7684\u3002<br>if else\u53ef\u4ee5\u8b93JavaScript\u5728\u6eff\u8db3\u67d0\u500b\u689d\u4ef6\u4e0b\u6642\uff0c\u57f7\u884c\u7279\u5b9a\u529f\u80fd\uff0c\u8868\u793a\u65b9\u5f0f\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var age=18;\nif (age&lt;18){\n    console.log(\"\u672a\u6eff18\u6b72\"\uff09\n}\nelse{\n    console.log(\"\u8d85\u904e18\u6b72\")\n}<\/pre>\n\n\n\n<p>\u7531\u65bcage\u5b9a\u7fa9\u6578\u503c\u70ba18\uff0c\u5728if else\u5167\uff0c\u6c92\u6709\u9054\u5230age&lt;18\u7684\u689d\u4ef6\uff0c\u56e0\u6b64\u6703\u57f7\u884celse\u5340\u584a\u7684\u6307\u4ee4\uff0c\u56e0\u6b64\u7a0b\u5f0f\u57f7\u884c\u7d50\u679c\u70ba\u300c\u8d85\u904e18\u6b72\u300d\u3002<br>\u9664\u4e86if else\u6307\u4ee4\u5916\uff0c\u9084\u53ef\u4ee5\u4f7f\u7528switch\uff0c\u7576\u689d\u4ef6\u6578\u91cf\u5f88\u591a\u6642\uff0c\u53ef\u4ee5\u52a0\u4ee5\u5229\u7528\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var drink=\"milk\"\nswitch(drink){\n\tcase \"milk\":\n\t \tconsole.log(\"I want \" + drink);\n\t \tbreak;\n\t case \"coffee\":\n\t \tconsole.log(\"I want \" + drink);\n\t \tbreak;\n\t default:\n\t \tconsole.log(\"I want \"+\"black tea\");\n}<\/pre>\n\n\n\n<p>\u4ee5\u4e0a\u7684\u6307\u4ee4\uff0cdrink\u7684\u503c\u70ba\u300cmilk\u300d\uff0c\u56e0\u6b64\u6703\u986f\u793a\u51fa\u300cI want milk\u300d\u7684\u7d50\u679c\u3002<br>\u53e6\u4e00\u500b\u53ef\u7528\u4f86\u9032\u884c\u6d41\u7a0b\u63a7\u5236\u7684\u529f\u80fd\u53eb\u505a\u8ff4\u5708\uff0c\u8ff4\u5708\u7684\u6307\u4ee4\u6709\u5206\u70ba\u5169\u7a2e\uff0c\u4e00\u7a2e for \u8ff4\u5708\uff0c\u53e6\u4e00\u7a2e\u70bawhile\u8ff4\u5708\uff0c\u53ef\u4ee5\u91cd\u8907\u57f7\u884c\u5927\u91cf\u7684\u4efb\u52d9\u3002<br>\u7576\u4f60\u77e5\u9053\u7a0b\u5f0f\u9700\u8981\u57f7\u884c\u6b64\u6578\u6642 \uff0c\u53ef\u7528for\u8ff4\u5708\uff0c\u4ee5\u4e0b\u7528\u8ff4\u5708\u8dd1\u51fa1~5\u7684\u52a0\u7e3d15\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var result=0\nfor ( var i=1; i&lt;=5; i++) {\n\tvar result=result+i;\n}\nconsole.log(result);<\/pre>\n\n\n\n<p>\u5982\u679c\u4e0d\u78ba\u5b9a\u8ff4\u5708\u8dd1\u7684\u6b21\u6578\uff0c\u5247\u53ef\u4ee5\u7528while\u8ff4\u5708\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var i=0\nwhile(i&lt;=5){\n\tvar result=result+i;\n\ti++;\n}\nconsole.log(result);<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E4%BA%8B%E4%BB%B6%E8%99%95%E7%90%86\"><\/span>\u4e8b\u4ef6\u8655\u7406<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>JavaScript\u662f\u4e00\u500b\u4e8b\u4ef6\u9a45\u52d5\u7684\u7a0b\u5f0f\u8a9e\u8a00\uff0c\u4ed6\u6703\u6839\u64da\u4f7f\u7528\u8005\u89f8\u767c\u689d\u4ef6\u4f86\u53cd\u61c9\u51fa\u76f8\u5c0d\u61c9\u7684\u4e8b\u4ef6\uff0c\u50cf\u662f\u4f7f\u7528\u8005\u9ede\u64ca\u96fb\u5546\u7db2\u9801\u4e0a\u300c\u7acb\u5373\u8cfc\u8cb7\u300d\u7684\u6309\u9215\uff0c\u9694\u5e7e\u79d2\u9418\u5f8c\u5c31\u7522\u751f\u5df2\u52a0\u5165\u8cfc\u7269\u8eca\u7684\u52d5\u756b\u6548\u679c\uff0c\u53c8\u6216\u8005\u50cf\u662f\u6ed1\u9f20\u6ed1\u904e\u7522\u54c1\u5716\u4e0a\uff0c\u7522\u54c1\u653e\u5927\u7684\u52d5\u756b\u6548\u679c\uff0c\u9019\u53ef\u4ee5\u8b93\u7db2\u7ad9\u6709\u66f4\u591a\u7684\u4e92\u52d5\u3002<br>\u4e8b\u4ef6\u8655\u7406\u5206\u5225\u4e8b\u4ef6\u985e\u5225+\u4e8b\u4ef6\u8655\u7406\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4e8b\u4ef6\u985e\u5225\uff1a\u8aaa\u660e\u4e8b\u4ef6\u767c\u751f\u7684\u985e\u5225\uff0c\u50cf\u662f\u4f7f\u7528\u8005\u9ede\u64caclick(\u9ede\u64ca)\u3001\u6ed1\u9f20\u6ed1\u904e(mouseover)\u3001\u6ed1\u9f20\u6ed1\u51fa(mouseout)\u7b49\u7b49<\/li>\n\n\n\n<li>\u8655\u7406\u65b9\u6cd5\uff1a\u7576\u4e8b\u4ef6\u767c\u751f\u5f8c\uff0c\u5f8c\u7e8c\u8981\u4f7f\u7528\u7684\u51fd\u5f0f\uff0c\u4e5f\u5c31\u662f\u8981\u89f8\u767c\u4ec0\u9ebc\u6a23\u7684\u689d\u4ef6\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u4ee5\u4e0b\u70ba\u4e8b\u4ef6\u8655\u7406\u7bc4\u4f8b\u5beb\u6cd5\uff0c\u7576\u9ede\u64ca\u6309\u9215\u8df3\u51fa\u300c\u606d\u559c\u4f60\u4e2d\u734e\u300d\u7684\u8a0a\u606f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">document.getElementById(\"btn\").addEventListener('click', function() {\n\t  alert('\u606d\u559c\u4f60\u4e2d\u734e!');\n});<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"JavaScript%E7%9A%84%E6%87%89%E7%94%A8\"><\/span>JavaScript\u7684\u61c9\u7528<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Google_Analytic%E8%BF%BD%E8%B9%A4%E7%A2%BC\"><\/span>Google Analytic\u8ffd\u8e64\u78bc<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u6bcf\u4e00\u500b\u4eba\u884c\u92b7\u4eba\u90fd\u77e5\u9053Google\u6709\u63d0\u4f9bGA\u7684\u8ffd\u8e64\u78bc\u4f86\u8ffd\u8e64\u7db2\u7ad9\u7684\u6d41\u91cf\u8b8a\u5316\uff0cGA\u8ffd\u8e64\u78bc\u5c31\u662f\u4e00\u7a2eJavaScript\u7684\u61c9\u7528\uff0c\u5728\u904e\u53bbGoogle\u6709\u63a8\u51faanalytics.js\u548cga.js\u7248\u672c\u7684\u8ffd\u8e64\uff0c\u76ee\u524d\u63a8\u51fa\u4e86\u7b2c\u4e09\u4ee3\u8ffd\u8e64\u78bc\uff0cgtag.js\u8ffd\u8e64\u78bc\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">&lt;!-- Global site tag (gtag.js) - Google Analytics --&gt;\n&lt;script async src=\"https:\/\/www.googletagmanager.com\/gtag\/js?id=GA_TRACKING_ID\"&gt;&lt;\/script&gt;\n&lt;script&gt;\n  window.dataLayer = window.dataLayer || [];\n  function gtag(){dataLayer.push(arguments);}\n  gtag('js', new Date());\n  gtag('config', 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id=\"%E6%9B%B4%E9%80%B2%E9%9A%8E%E7%9A%84JavaScript%E6%87%89%E7%94%A8\"><\/span>\u66f4\u9032\u968e\u7684JavaScript\u61c9\u7528<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u5982\u679c\u4f60\u60f3\u8981\u66f4\u6df1\u5165\u7406\u89e3JavaScript\u7684\u8a71\uff0c\u53ef\u4ee5\u61c9\u7528JQuery\u7684\u51fd\u5f0f\u5eab\uff0c\u88e1\u9762\u5305\u542b\u8a31\u591a\u70baJavaScript\u8a2d\u8a08\u7684\u64f4\u5145\u529f\u80fd\uff0c\u66f4\u5bb9\u6613\u8a2d\u8a08\u51fa\u8207\u4f7f\u7528\u8005\u4e92\u52d5\u529f\u80fd\uff0c\u53c8\u6216\u8005\u662f\u5728\u8207\u5de5\u7a0b\u5e2b\u6e9d\u901a\u65b0\u7684GA\u9700\u6c42\u6642\uff0c\u53ef\u4ee5\u7c21\u55ae\u63cf\u8ff0JavaScript\u7684\u6982\u5ff5\uff0c\u80fd\u5920\u8b93\u5de5\u7a0b\u5e2b\u66f4\u5bb9\u6613\u7406\u89e3\u9700\u6c42\u5167\u5bb9\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"JavaScript%E7%9A%84%E5%AD%B8%E7%BF%92\"><\/span>JavaScript\u7684\u5b78\u7fd2<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"JavaScript%E7%9A%84%E5%AD%B8%E7%BF%92%E8%B3%87%E6%BA%90\"><\/span>JavaScript\u7684\u5b78\u7fd2\u8cc7\u6e90<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u73fe\u5728\u6709\u975e\u5e38\u591a\u7684\u7684\u7dda\u4e0a\u8ab2\u7a0b\u53ef\u4ee5\u5b78\u7fd2JavaScript\uff0cawoo\u9019\u908a\u63d0\u4f9b4\u500b\u5b78\u7fd2\u8cc7\u6e90\u4f9b\u5927\u5bb6\u53c3\u8003\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.codecademy.com\/learn\/learn-JavaScript\">Codecademy<\/a>\uff1a\u514d\u8cbb\u7684\u7dda\u4e0a\u5b78\u7fd2\u8cc7\u6e90\uff0c\u88e1\u9762\u5305\u542b\u8a31\u591aJavaScript\u57fa\u790e\u6982\u5ff5\u3002<\/li>\n\n\n\n<li><a href=\"https:\/\/www.pluralsight.com\/paths\/JavaScript\">Plurasight<\/a>\uff1a\u4ed8\u8cbb\u8ab2\u7a0b\uff0c\u5f9e\u57fa\u790e\u5230\u9032\u968e\u8ab2\u7a0b\u90fd\u6709\u8457\u8a73\u7d30\u7684\u6559\u5b78\u3002<\/li>\n\n\n\n<li><a href=\"https:\/\/codepen.io\/\">Codepen<\/a>\uff1a\u6709\u975e\u5e38\u591a\u900f\u904eJavaScript\u5b8c\u6210\u7684\u4f5c\u54c1\uff0c\u53ef\u4ee5\u5728\u88e1\u627e\u5230\u8a31\u591a\u7cbe\u5f69\u7684\u4f5c\u54c1\uff0c\u4e26\u4e14\u7df4\u7fd2\u5b8c\u6210\u81ea\u5df1\u7684\u5c0f\u7a0b\u5f0f\u3002<\/li>\n\n\n\n<li><a href=\"https:\/\/stackoverflow.com\/\">Stackoverlfow<\/a>\uff1a\u5de5\u7a0b\u5e2b\u7684\u767c\u554f\u5e73\u53f0\uff0c\u5982\u679c\u6709\u9047\u5230\u4efb\u4f55JavaScript\u7684\u554f\u984c\uff0c\u5728\u9019\u88e1\u6709\u6a5f\u6703\u53ef\u4ee5\u7372\u5f97\u89e3\u7b54\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u5584\u7528\u4ee5\u4e0a\u7684\u8cc7\u6e90\uff0c\u672a\u4f86\u7121\u8ad6\u4f60\u662f\u884c\u92b7\u3001\u6587\u6848\u6216\u8005\u662f\u5c08\u6848\u7d93\u7406\uff0c\u66f4\u9032\u4e00\u6b65\u6df1\u5165\u4e86\u89e3JavaScript\uff0c\u77e5\u9053\u7a0b\u5f0f\u8a9e\u8a00\u904b\u4f5c\u908f\u8f2f\uff0c\u8207\u5de5\u7a0b\u5e2b\u6e9d\u901a\u66f4\u52a0\u9806\u66a2\uff0c\u4e5f\u589e\u5f37\u81ea\u5df1\u5728\u6578\u4f4d\u884c\u92b7\u4e2d\u7684\u7af6\u722d\u529b\u3002<\/p>\n\n\n\n<p>\u5982\u6709\u4efb\u4f55\u7db2\u7ad9\u512a\u5316\u7684\u554f\u984c\uff0c\u6216\u60f3\u77ad\u89e3\u95dc\u65bc SEO \u89e3\u6c7a\u65b9\u6848\uff0c<a href=\"https:\/\/www.awoo.ai\/zh-hant\/contact\/\">\u6b61\u8fce\u7acb\u5373\u8aee\u8a62\uff0c\u5c07\u6709 awoo \u5c08\u696d\u9867\u554f\u70ba\u60a8\u670d\u52d9\u3002<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/www.awoo.ai\/zh-hant\/contact\/\"><img decoding=\"async\" src=\"https:\/\/media.awoo.ai\/live\/wp-content\/uploads\/image-1.png\" alt=\"\" class=\"wp-image-40156\" width=\"243\" height=\"69\"\/><\/a><\/figure>\n\n\n\n<p><a href=\"https:\/\/www.awoo.ai\/zh-hant\/contact\/\">&nbsp;<\/a><\/p>\n\n\n\n<p>\u5ef6\u4f38\u95b1\u8b80\uff1a<a href=\"https:\/\/www.awoo.ai\/zh-hant\/blog\/rwd-and-awd-difference-for-seo\/\">RWD \u662f\u4ec0\u9ebc\uff1f\u8207 AWD \u6709\u4ec0\u9ebc\u4e0d\u540c\uff0c\u97ff\u61c9\u5f0f\u7db2\u7ad9\u8a2d\u8a08\u5c0d SEO \u597d\u8655\u4ecb\u7d39<\/a><\/p>\n\n\n\n<p>\u5ef6\u4f38\u95b1\u8b80\uff1a<a href=\"https:\/\/www.awoo.ai\/zh-hant\/blog\/seo-and-site-search-for-retail\/\">SEO \u8207\u7ad9\u5167\u641c\u5c0b\uff0c\u5982\u4f55\u5275\u96f6\u552e\u96fb\u5546\u7ad9\u5167\u641c\u5c0b\u6700\u5927\u50f9\u503c<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>JavaScript\u5341\u5206\u5e38\u898b\u65bc\u7db2\u9801\u8a2d\u8a08\uff0c\u662f\u4e00\u7a2e\u7528\u4f86\u5448\u73fe\u7db2\u9801\u52d5\u614b\u6548\u679c\u7684\u7a0b\u5f0f\u8a9e\u8a00\uff0c\u50cf\u662f\u6211\u5011\u5728\u96fb\u5546\u7db2\u7ad9\u9032\u884c\u8cfc\u7269\u6642\uff0c\u628a [&hellip;]<\/p>\n","protected":false},"author":72,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[29,38],"tags":[],"class_list":["post-10085","post","type-post","status-publish","format-standard","hentry","category-seo-guide","category-seo-beginner"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ 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