{"id":179,"date":"2022-07-31T09:37:10","date_gmt":"2022-07-31T09:37:10","guid":{"rendered":"https:\/\/hugohabor.com\/?p=179"},"modified":"2022-10-03T02:25:01","modified_gmt":"2022-10-03T02:25:01","slug":"js-hoisting%e6%8f%90%e5%8d%87-%e6%8b%86%e8%a7%a3_part01","status":"publish","type":"post","link":"https:\/\/hugohabor.com\/?p=179","title":{"rendered":"JS-Hoisting\u63d0\u5347"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u60f3\u5fc5\u9019\u500b\u662f\u8e0f\u5165JavaScript\u7b2c\u4e00\u500b\u5927\u9b54\u738b\u5427!? (\u7591<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9996\u5148\u6211\u5011\u8981\u63d0<strong>2\u500b\u968e\u6bb5<\/strong>: <\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><span style=\"text-decoration: underline;\">\u5275\u9020\u968e\u6bb5<\/span><\/li><li><span style=\"text-decoration: underline;\">\u57f7\u884c <\/span><\/li><\/ul>\n\n\n\n<pre class=\"wp-block-preformatted\">\u7d66\u4e88\u809d\u809d\u7684\u5de5\u7a0b\u5e2b\u5c0f\u984d\u6350\u6b3e'v' ETH\/ERC20<\/pre>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img data-recalc-dims=\"1\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/ETH_%E5%B9%A3%E5%AE%89%E6%94%B6%E6%AC%BE%E5%9C%B0%E5%9D%80ERC20_01.jpg?resize=218%2C214&#038;ssl=1\" alt=\"\" class=\"wp-image-343\" width=\"218\" height=\"214\" srcset=\"https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/ETH_%E5%B9%A3%E5%AE%89%E6%94%B6%E6%AC%BE%E5%9C%B0%E5%9D%80ERC20_01.jpg?w=953&amp;ssl=1 953w, https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/ETH_%E5%B9%A3%E5%AE%89%E6%94%B6%E6%AC%BE%E5%9C%B0%E5%9D%80ERC20_01.jpg?resize=300%2C296&amp;ssl=1 300w, https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/ETH_%E5%B9%A3%E5%AE%89%E6%94%B6%E6%AC%BE%E5%9C%B0%E5%9D%80ERC20_01.jpg?resize=768%2C758&amp;ssl=1 768w\" sizes=\"auto, (max-width: 218px) 100vw, 218px\" \/><figcaption>0xd20c50c82450ee288711bf5e3f9238bc816c168a<\/figcaption><\/figure>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-794e3cfa wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<p class=\"wp-block-paragraph\"><strong>\u53c3\u8003\u8cc7\u6599: \u516d\u89d2\u5b78\u9662<\/strong><\/p>\n<\/div>\n<\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"1024\" height=\"569\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/%E5%89%B5%E9%80%A0%E7%92%B0%E5%A2%83_%E5%9F%B7%E8%A1%8C01.png?resize=1024%2C569&#038;ssl=1\" alt=\"\" class=\"wp-image-186\" srcset=\"https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/%E5%89%B5%E9%80%A0%E7%92%B0%E5%A2%83_%E5%9F%B7%E8%A1%8C01.png?resize=1024%2C569&amp;ssl=1 1024w, https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/%E5%89%B5%E9%80%A0%E7%92%B0%E5%A2%83_%E5%9F%B7%E8%A1%8C01.png?resize=300%2C167&amp;ssl=1 300w, https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/%E5%89%B5%E9%80%A0%E7%92%B0%E5%A2%83_%E5%9F%B7%E8%A1%8C01.png?resize=768%2C427&amp;ssl=1 768w, https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/%E5%89%B5%E9%80%A0%E7%92%B0%E5%A2%83_%E5%9F%B7%E8%A1%8C01.png?w=1182&amp;ssl=1 1182w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code><strong>\u7bc4\u4f8b1:  <\/strong>\nfunction callname(){\n    console.log('Jen');\n    \/\/Jen \u9019\u500bcallname() \u88e1\u9762\u7684\u5167\u5bb9\u5df2\u7d93\u88ab\u5b8c\u6574\u7684\u5275\u9020\n}\n\ncallname();<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code><strong>\u7bc4\u4f8b2:  <\/strong>\ncallname();\n\nfunction callname(){\n    console.log('Jen');\n    \/\/Jen \u9019\u500bcallname() \u88e1\u9762\u7684\u5167\u5bb9\u5df2\u7d93\u88ab\u5b8c\u6574\u7684\u5275\u9020\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u7bc4\u4f8b1~2\u7684\u8f38\u51fa\u7d50\u679c<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"612\" height=\"192\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/%E5%89%B5%E9%80%A0%E7%92%B0%E5%A2%83_%E5%9F%B7%E8%A1%8C_FUNCTION%E5%85%88%E5%89%B5%E9%80%A0%E5%85%A7%E5%AE%B9.png?resize=612%2C192&#038;ssl=1\" alt=\"\" class=\"wp-image-189\" srcset=\"https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/%E5%89%B5%E9%80%A0%E7%92%B0%E5%A2%83_%E5%9F%B7%E8%A1%8C_FUNCTION%E5%85%88%E5%89%B5%E9%80%A0%E5%85%A7%E5%AE%B9.png?w=612&amp;ssl=1 612w, https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/%E5%89%B5%E9%80%A0%E7%92%B0%E5%A2%83_%E5%9F%B7%E8%A1%8C_FUNCTION%E5%85%88%E5%89%B5%E9%80%A0%E5%85%A7%E5%AE%B9.png?resize=300%2C94&amp;ssl=1 300w\" sizes=\"auto, (max-width: 612px) 100vw, 612px\" \/><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\u89e3\u91cb:<\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Function \u51fd\u5f0f\u6703<strong>\u512a\u5148\u88ab\u5275\u9020<\/strong>(<strong> \u63d0\u5347<\/strong> )<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u5167\u5bb9\u9673\u8ff0\u5f0f<\/strong>\u4e5f\u662f!  <strong> *\u4e0d\u5305\u542b\u8a18\u61b6\u9ad4\u5340\u584a<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f60\u6703\u767c\u73fe, \u51fd\u5f0f\u5167\u5bb9\u70ba&#8221;\u5b57\u4e32&#8221; \u9673\u8ff0\u5f0f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0b\u4e00\u6bb5\u6539\u6210&#8221;\u8b8a\u6578\u5167\u5bb9&#8221;, \u6703\u600e\u9ebc\u6a23\u5462?? <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u8b8a\u6578_\u5167\u5bb9<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code><strong>\u7bc4\u4f8b3<\/strong>\n\/\/\u5275\u9020\u968e\u6bb5\nfunction callname(){\n    console.log(Jen);\n    \/\/Jen\u6c92\u6709\u5275\u9020\u968e\u6bb5, \u6c92\u6709\u8a18\u61b6\u9ad4\u7a7a\u9593, \u4e5f\u6c92\u6709\u57f7\u884c\n}\n\n\/\/\u57f7\u884c\ncallname();<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u7bc4\u4f8b3\u7684\u8f38\u51fa\u7d50\u679c<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"622\" height=\"227\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/%E5%89%B5%E9%80%A0%E7%92%B0%E5%A2%83_%E5%9F%B7%E8%A1%8C_FUNCTION%E5%85%88%E5%89%B5%E9%80%A0%E5%85%A7%E5%AE%B9_%E8%A8%98%E6%86%B6%E9%AB%94%E9%99%A4%E5%A4%96.png?resize=622%2C227&#038;ssl=1\" alt=\"\" class=\"wp-image-192\" srcset=\"https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/%E5%89%B5%E9%80%A0%E7%92%B0%E5%A2%83_%E5%9F%B7%E8%A1%8C_FUNCTION%E5%85%88%E5%89%B5%E9%80%A0%E5%85%A7%E5%AE%B9_%E8%A8%98%E6%86%B6%E9%AB%94%E9%99%A4%E5%A4%96.png?w=622&amp;ssl=1 622w, https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/%E5%89%B5%E9%80%A0%E7%92%B0%E5%A2%83_%E5%9F%B7%E8%A1%8C_FUNCTION%E5%85%88%E5%89%B5%E9%80%A0%E5%85%A7%E5%AE%B9_%E8%A8%98%E6%86%B6%E9%AB%94%E9%99%A4%E5%A4%96.png?resize=300%2C109&amp;ssl=1 300w\" sizes=\"auto, (max-width: 622px) 100vw, 622px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u6211\u5011\u5c07\u7bc4\u4f8b3 ,var\u8b8a\u6578\u9032\u884c\u5275\u9020 &#8220;\u8a18\u61b6\u9ad4\u5340\u584a&#8221;<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/\u5275\u9020\u968e\u6bb5\nvar  Jen \nfunction callname(){\n    console.log(Jen);\n    \/\/Jen \u5728\u5275\u9020\u968e\u6bb5\u5df2\u7d93\u6709\u8a18\u61b6\u9ad4\u5340\u584a\n}\n\n\/\/\u57f7\u884c\ncallname();<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"617\" height=\"222\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/%E5%89%B5%E9%80%A0%E7%92%B0%E5%A2%83_%E5%9F%B7%E8%A1%8C_FUNCTION%E5%85%88%E5%89%B5%E9%80%A0%E5%85%A7%E5%AE%B9_%E5%89%B5%E9%80%A0%E8%A8%98%E6%86%B6%E9%AB%94var.png?resize=617%2C222&#038;ssl=1\" alt=\"\" class=\"wp-image-193\" srcset=\"https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/%E5%89%B5%E9%80%A0%E7%92%B0%E5%A2%83_%E5%9F%B7%E8%A1%8C_FUNCTION%E5%85%88%E5%89%B5%E9%80%A0%E5%85%A7%E5%AE%B9_%E5%89%B5%E9%80%A0%E8%A8%98%E6%86%B6%E9%AB%94var.png?w=617&amp;ssl=1 617w, https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/%E5%89%B5%E9%80%A0%E7%92%B0%E5%A2%83_%E5%9F%B7%E8%A1%8C_FUNCTION%E5%85%88%E5%89%B5%E9%80%A0%E5%85%A7%E5%AE%B9_%E5%89%B5%E9%80%A0%E8%A8%98%E6%86%B6%E9%AB%94var.png?resize=300%2C108&amp;ssl=1 300w\" sizes=\"auto, (max-width: 617px) 100vw, 617px\" \/><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\u89e3\u91cb:<\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c0d\u65bc<strong>var<\/strong> \u5275\u9020, \u6703\u5c07<strong>var<\/strong> \u5ba3\u544a\u7684\u52d5\u4f5c\u5ba3\u7a31 <strong>&#8220;\u63d0\u5347&#8221;<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6703\u767c\u73fe\u50c5\u50c5\u662f\u6c92\u5728 <strong>\u8a18\u61b6\u9ad4\u5340\u9593\u5167<\/strong> \u7d66\u4e88<strong> &#8220;\u6578\u503c&#8221;<\/strong>\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u597d\u5566! \u7d66\u4e88Jen \u4e00\u500b\u6578\u503c\u4e4b\u5f8c<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code><strong>\u7bc4\u4f8b4<\/strong>\n\/\/\u5275\u9020\u968e\u6bb5\nvar  Jen =1;\n\n\/\/\/\u5275\u9020\u968e\u6bb5\nfunction callname(){\n    console.log(Jen);\n    \n}\n\n\/\/\u57f7\u884c\u968e\u6bb5 \u6b64\u6642\u624d\u6703\u628a Jen= 1 \u8ce6\u4e88\u503c\ncallname();<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"620\" height=\"185\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/%E5%89%B5%E9%80%A0%E7%92%B0%E5%A2%83_%E5%9F%B7%E8%A1%8C_FUNCTION%E5%85%88%E5%89%B5%E9%80%A0%E5%85%A7%E5%AE%B9_%E5%89%B5%E9%80%A0%E8%A8%98%E6%86%B6%E9%AB%94var_%E7%B5%A6%E4%BA%88%E6%95%B8%E5%80%BC.png?resize=620%2C185&#038;ssl=1\" alt=\"\" class=\"wp-image-200\" srcset=\"https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/%E5%89%B5%E9%80%A0%E7%92%B0%E5%A2%83_%E5%9F%B7%E8%A1%8C_FUNCTION%E5%85%88%E5%89%B5%E9%80%A0%E5%85%A7%E5%AE%B9_%E5%89%B5%E9%80%A0%E8%A8%98%E6%86%B6%E9%AB%94var_%E7%B5%A6%E4%BA%88%E6%95%B8%E5%80%BC.png?w=620&amp;ssl=1 620w, https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/%E5%89%B5%E9%80%A0%E7%92%B0%E5%A2%83_%E5%9F%B7%E8%A1%8C_FUNCTION%E5%85%88%E5%89%B5%E9%80%A0%E5%85%A7%E5%AE%B9_%E5%89%B5%E9%80%A0%E8%A8%98%E6%86%B6%E9%AB%94var_%E7%B5%A6%E4%BA%88%E6%95%B8%E5%80%BC.png?resize=300%2C90&amp;ssl=1 300w\" sizes=\"auto, (max-width: 620px) 100vw, 620px\" \/><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\u89e3\u91cb:<\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u7b2c\u4e00\u884c var<\/strong>  Jen =1; \u5c07\u8a18\u61b6\u9ad4\u5340\u9593\u5ba3\u544a\u51fa\u4f86 =<strong> &#8220;\u63d0\u5347&#8221;<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8981\u5230\u4e86<strong>callname()<\/strong> <strong>\u57f7\u884c\u968e\u6bb5<\/strong>,  <strong>var<\/strong>  Jen \u624d\u6703\u88ab\u8ce6\u4e88 = 1<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6211\u628a\u7b2c\u4e00\u884c var Jen=1 <\/h2>\n\n\n\n<h2 class=\"wp-block-heading\">\u79fb\u52d5\u5230Function \u5f8c\u65b9\u6aa2\u9a57\u770b\u770b?? <\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code><strong>\u7bc4\u4f8b<\/strong>5\nfunction callname(){\n    console.log(Jen);\n    \n}\n\nvar Jen=1;\ncallname();<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"620\" height=\"185\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/%E5%89%B5%E9%80%A0%E7%92%B0%E5%A2%83_%E5%9F%B7%E8%A1%8C_FUNCTION%E5%85%88%E5%89%B5%E9%80%A0%E5%85%A7%E5%AE%B9_%E5%89%B5%E9%80%A0%E8%A8%98%E6%86%B6%E9%AB%94var_%E7%B5%A6%E4%BA%88%E6%95%B8%E5%80%BC.png?resize=620%2C185&#038;ssl=1\" alt=\"\" class=\"wp-image-200\" srcset=\"https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/%E5%89%B5%E9%80%A0%E7%92%B0%E5%A2%83_%E5%9F%B7%E8%A1%8C_FUNCTION%E5%85%88%E5%89%B5%E9%80%A0%E5%85%A7%E5%AE%B9_%E5%89%B5%E9%80%A0%E8%A8%98%E6%86%B6%E9%AB%94var_%E7%B5%A6%E4%BA%88%E6%95%B8%E5%80%BC.png?w=620&amp;ssl=1 620w, https:\/\/i0.wp.com\/hugohabor.com\/wp-content\/uploads\/2022\/08\/%E5%89%B5%E9%80%A0%E7%92%B0%E5%A2%83_%E5%9F%B7%E8%A1%8C_FUNCTION%E5%85%88%E5%89%B5%E9%80%A0%E5%85%A7%E5%AE%B9_%E5%89%B5%E9%80%A0%E8%A8%98%E6%86%B6%E9%AB%94var_%E7%B5%A6%E4%BA%88%E6%95%B8%E5%80%BC.png?resize=300%2C90&amp;ssl=1 300w\" sizes=\"auto, (max-width: 620px) 100vw, 620px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Funtion \u4e4b\u5f8c, var Jen=1 \u57f7\u884c\u5275\u9020\u968e\u6bb5 <strong>(\u63d0\u5347)<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u518d\u4f86\u5f9e\u57f7\u884c\u968e\u6bb5&gt;&gt; callname() \u5c07\u8ce6\u4e88\u503c\u7d66 Jen<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u6a23\u6309\u7167<strong> <\/strong>: <\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><span style=\"text-decoration: underline;\">\u5275\u9020\u968e\u6bb5<\/span><\/li><li><span style=\"text-decoration: underline;\">\u57f7\u884c <\/span><\/li><\/ul>\n\n\n\n<figure class=\"wp-block-pullquote\"><blockquote><p>\u7d50\u8a9e<\/p><\/blockquote><\/figure>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Function &amp; \u5167\u90e8\u9673\u8ff0\u5f0f<\/strong>, \u512a\u5148<strong>Hoisting \/\u63d0\u5347<\/strong><\/li><\/ul>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>var<\/strong> \u5ba3\u544a<strong>\u8a18\u61b6\u9ad4\u5340\u9593<\/strong> <strong>Hoisting \/\u63d0\u5347<\/strong><\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u9019\u53ea\u662f\u7b2c\u4e00\u968e\u6bb5\u7684\u63d0\u5347\u89c0\u5ff5<br>\u7562\u7adf\u5148\u4e86\u89e3\u5275\u9020>>\u57f7\u884c\u7684\u9806\u5e8f, \u4e4b\u5f8c\u628a\u5404\u7a2e\u89c0\u5ff5\u52a0\u9032\u53bb, \u5c0d\u65bc\u5f80\u5f8c\u5c0dJS\u7684\u6df1\u5ea6\u8a9e\u6cd5\u6709\u5f88\u5927\u7684\u5e6b\u52a9\u5594!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u60f3\u5fc5\u9019\u500b\u662f\u8e0f\u5165JavaScript\u7b2c\u4e00\u500b\u5927\u9b54\u738b\u5427!? (\u7591 \u9996\u5148\u6211\u5011\u8981\u63d02\u500b\u968e\u6bb5: \u5275\u9020\u968e\u6bb5 \u57f7\u884c \u7d66\u4e88\u809d\u809d\u7684\u5de5\u7a0b\u5e2b\u5c0f\u984d\u6350\u6b3e&#8217;v&#8217; ETH\/ERC20 \u53c3\u8003\u8cc7\u6599: \u516d\u89d2\u5b78\u9662 \u7bc4\u4f8b1~2\u7684\u8f38\u51fa\u7d50\u679c \u89e3\u91cb: Function \u51fd\u5f0f\u6703\u512a\u5148\u88ab\u5275\u9020( \u63d0\u5347 ) \u5167\u5bb9\u9673\u8ff0\u5f0f\u4e5f\u662f! *\u4e0d\u5305\u542b\u8a18\u61b6\u9ad4\u5340\u584a \u4f60\u6703\u767c\u73fe, \u51fd\u5f0f\u5167\u5bb9\u70ba&#8221;\u5b57\u4e32&#8221; \u9673\u8ff0\u5f0f \u4e0b\u4e00\u6bb5\u6539\u6210&#8221;\u8b8a\u6578\u5167\u5bb9&#8221;, \u6703\u600e\u9ebc\u6a23\u5462?? \u8b8a\u6578_\u5167\u5bb9 \u7bc4\u4f8b3\u7684\u8f38\u51fa\u7d50\u679c \u6211\u5011\u5c07\u7bc4\u4f8b3 ,var\u8b8a\u6578\u9032\u884c\u5275\u9020 &#8220;\u8a18\u61b6\u9ad4\u5340\u584a&#8221; \u89e3\u91cb: \u5c0d\u65bcvar \u5275\u9020, \u6703\u5c07var \u5ba3\u544a\u7684\u52d5\u4f5c\u5ba3\u7a31 &#8220;\u63d0\u5347&#8221; \u6703\u767c\u73fe\u50c5\u50c5\u662f\u6c92\u5728 \u8a18\u61b6\u9ad4\u5340\u9593\u5167 \u7d66\u4e88 &#8220;\u6578\u503c&#8221;\u3002 \u597d\u5566! \u7d66\u4e88Jen \u4e00\u500b\u6578\u503c\u4e4b\u5f8c \u89e3\u91cb: \u7b2c\u4e00\u884c var Jen =1; \u5c07\u8a18\u61b6\u9ad4\u5340\u9593\u5ba3\u544a\u51fa\u4f86 = &#8220;\u63d0\u5347&#8221; \u8981\u5230\u4e86callname() \u57f7\u884c\u968e\u6bb5, var Jen \u624d\u6703\u88ab\u8ce6\u4e88 = 1 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","_eb_attr":"","WB4WB4WP_MODE":"","WB4WP_PAGE_SCRIPTS":"","WB4WP_PAGE_STYLES":"","WB4WP_PAGE_FONTS":"","WB4WP_PAGE_HEADER":"","WB4WP_PAGE_FOOTER":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[6],"tags":[38],"class_list":["post-179","post","type-post","status-publish","format-standard","hentry","category-js_learning","tag-hoisting"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u60f3\u5fc5\u9019\u500b\u662f\u8e0f\u5165JavaScript\u7b2c\u4e00\u500b\u5927\u9b54\u738b\u5427!? 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