{"id":6485,"date":"2023-07-21T17:18:54","date_gmt":"2023-07-21T09:18:54","guid":{"rendered":"https:\/\/i007.vip:15443\/wordpress\/?p=6485"},"modified":"2023-07-21T17:18:54","modified_gmt":"2023-07-21T09:18:54","slug":"%e5%89%8d%e7%ab%af%e5%bc%80%e5%8f%91%e8%b0%83%e8%af%95%e6%9c%80%e4%bd%b3%e5%ae%9e%e8%b7%b5","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/6485","title":{"rendered":"\u524d\u7aef\u5f00\u53d1\u8c03\u8bd5\u6700\u4f73\u5b9e\u8df5"},"content":{"rendered":"
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original content<\/a><\/div>\n
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\u4e00\u3001\u80cc\u666f<\/h2>\n

\u4f5c\u4e3a\u524d\u7aef\u5de5\u7a0b\u5e08\uff0c\u65e0\u8bba\u662f\u5f00\u53d1\u8fd8\u662f\u7ebf\u4e0a\u73af\u5883\uff0c\u6d4f\u89c8\u5668\u6216\u662f\u00a0node<\/code>\uff0c\u79fb\u52a8\u7aef\u6216\u8005\u00a0PC<\/code>\u00a0\u7aef\uff0c\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e9b\u00a0bug<\/code>\uff0c\u90a3\u4e48\u5982\u4f55\u5feb\u901f\u5b9a\u4f4d\u548c\u89e3\u51b3\u95ee\u9898\u5462\uff0c\u7b14\u8005\u51c6\u5907\u4e86\u4e00\u4efd\u524d\u7aef\u8c03\u8bd5\u6307\u5357\u4f9b\u5927\u5bb6\u53c2\u8003\u3002<\/p>\n

\u6587\u7ae0\u5927\u7eb2<\/b>\uff1a<\/p>\n

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<\/div>\n<\/figure>\n

\u8c03\u8bd5\u672c\u8eab\u53ef\u4ee5\u5206\u4e3a\u4e24\u4e2a\u8fc7\u7a0b\uff0c\u5b9a\u4f4d\u95ee\u9898<\/b>\u00a0\u548c\u00a0\u89e3\u51b3\u95ee\u9898<\/b>\u3002\u800c\u66f4\u91cd\u8981\u7684\u663e\u7136\u662f\u5982\u4f55\u5feb\u901f\u7684\u5b9a\u4f4d\u95ee\u9898\u3002\u672c\u6587\u5c06\u96c6\u4e2d\u8ba8\u8bba\u5982\u4f55\u00a0\u5feb\u901f\u53d1\u73b0<\/b>\u00a0\u5e76\u00a0\u8c03\u8bd5\u95ee\u9898<\/b>\uff0c\u81f3\u4e8e\u5982\u4f55\u89e3\u51b3\u95ee\u9898\uff0c\u90a3\u5c31\u662f\u5f00\u53d1\u672c\u8eab\u7684\u4e8b\u60c5\uff0c\u65e0\u6cd5\u4e00\u6982\u800c\u8bba\u4e86\u3002<\/p>\n

\u4e8c\u3001\u8c03\u8bd5\u5de5\u5177\u65b9\u6cd5<\/h2>\n

2.1 Chrome DevTools \u7684\u4f7f\u7528<\/h3>\n

Chrome \u7684 DevTools \u662f\u6700\u5e38\u7528\u7684\u8c03\u8bd5\u5de5\u5177\uff0c\u4e0b\u9762\u4e3b\u8981\u4ecb\u7ecd\u4e0b\u00a0Elements<\/b>\u3001Console<\/b>\u00a0\u548c\u00a0Source<\/b>\u00a0\u4e09\u4e2a\u9762\u677f\u7684\u4f7f\u7528\u3002<\/p>\n

2.1.1 Elements<\/h3>\n

Elements \u9762\u677f\u4f1a\u663e\u793a\u76ee\u524d\u7f51\u9875\u4e2d\u7684 DOM\u3001CSS \u72b6\u6001\uff0c\u4e14\u53ef\u4ee5\u4fee\u6539\u9875\u9762\u4e0a\u7684 DOM \u548c CSS\uff0c\u5373\u65f6\u770b\u5230\u7ed3\u679c\uff0c\u7701\u53bb\u4e86\u5728\u7f16\u8f91\u5668\u4fee\u6539\u3001\u50a8\u5b58\u3001\u6d4f\u89c8\u5668\u67e5\u770b\u7ed3\u679c\u7684\u6d41\u7a0b\u3002<\/p>\n

Elements \u4e3b\u8981\u53ef\u4ee5\u5206\u4e3a DOM \u7ed3\u6784\u4ee5\u53ca\u5143\u7d20\uff08Element\uff09\u5185\u5bb9\u4e24\u4e2a\u5b50\u9762\u677f\uff0c\u4e0b\u9762\u4e3b\u8981\u4ecb\u7ecd\u4e00\u4e0b Elements DOM<\/p>\n

$n<\/h3>\n

\u5f00\u542f Elements \u9762\u677f\u65f6\uff0c\u6807\u8bb0\u7684\u5143\u7d20\u540e\u65b9\u603b\u4f1a\u6709\u4e2a\u00a0== $0<\/code><\/i><\/p>\n

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<\/div>\n<\/figure>\n

\u9009\u4e2d\u4e00\u4e2a\u5143\u7d20\u540e\u518d\u5230 Console \u9762\u677f\u8f93\u5165$0<\/code>\uff0c\u4f1a\u53d1\u73b0\u521a\u521a\u9009\u4e2d\u7684\u5143\u7d20\u51fa\u73b0\u5728 Console \u4e2d,\u5982\u679c\u518d\u591a\u70b9\u51e0\u4e2a\u5143\u7d20\uff0c\u8fd8\u53ef\u4ee5\u7528$1<\/code>\u3001$2<\/code>\u3001$3<\/code>\u3001$4<\/code>\uff08\u5230\u6b64\u4e3a\u6b62\uff09\u6765\u62ff\u5230\u524d\u51e0\u6b21\u9009\u5230\u7684\u5143\u7d20\u3002<\/p>\n

\u53e6\u5916\u5728 Console \u4e2d\u5bf9\u5143\u7d20\u6309\u4e0b\u53f3\u952e\uff0c\u9009\u62e9\u00a0Reveal in Elements Panel<\/code>\u00a0\u53ef\u4ee5\u8df3\u5230\u8be5\u5143\u7d20\u5728 Elements \u9762\u677f\u4e2d\u7684\u4f4d\u7f6e\uff0c\u5bf9 Elements \u9762\u677f\u7684\u5143\u7d20\u6309\u4e0b\u53f3\u952e\u5219\u6709\u00a0Scroll to view<\/code>\u00a0\u53ef\u4ee5\u628a\u89c6\u91ce\u6eda\u5230\u80fd\u770b\u89c1\u5143\u7d20\u7684\u5730\u65b9\u3002<\/p>\n

\u60f3\u8981\u5728 Console \u9762\u677f\u4e2d\u7528 JavaScript \u64cd\u4f5c\u5143\u7d20\u65f6\uff0c$0<\/code>\u5c31\u975e\u5e38\u65b9\u4fbf\uff0c\u53e6\u5916\u4e5f\u53ef\u4ee5\u642d\u914d\u00a0console.dir($0)<\/code>\u00a0\u6765\u89c2\u5bdf\u5143\u7d20\u7684\u5404\u4e2a\u5c5e\u6027\uff0c\u5982\u679c\u5728 Console \u76f4\u63a5\u8f93\u5165\u00a0$0<\/code>\u00a0\u6216\u662f\u00a0console.log($0)<\/code>\u00a0\u53ea\u4f1a\u663e\u793a\u5143\u7d20\u81ea\u8eab\u3002<\/p>\n

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<\/div>\n<\/figure>\n

inspect<\/h3>\n

\u6709\u65f6\u5019\u4e00\u4e9b dom \u8282\u70b9\u4f1a\u5d4c\u5957\u5f88\u6df1\uff0c\u5bfc\u81f4\u6211\u4eec\u5f88\u96be\u5229\u7528 Element \u9762\u677f html \u4ee3\u7801\u6765\u627e\u5230\u5bf9\u5e94\u7684\u8282\u70b9\u3002inspect(dom\u5143\u7d20)<\/code>\u53ef\u4ee5\u8ba9\u6211\u4eec\u5feb\u901f\u8df3\u8f6c\u5230\u5bf9\u5e94\u7684 dom \u8282\u70b9\u7684 html \u4ee3\u7801\u4e0a\u3002
\neg\uff1a\u5728 console \u8f93\u5165inspect($('#app'))<\/code>\uff0c\u56de\u8f66\u540e\u4fbf\u53ef\u4ee5\u8df3\u8f6c\u5230#app \u8282\u70b9\u7684 html,\u8fdb\u884c\u5ba1\u67e5\u5143\u7d20<\/p>\n

2.1.2 Console<\/h3>\n

Console\u9762\u677f\u4f5c\u4e3a shell \u63d0\u793a\u7a97\u53e3\u7528\u6765\u548c\u9875\u9762\u6587\u6863\u4ee5\u53ca DevTools \u8fdb\u884c\u4ea4\u4e92<\/p>\n

console \u5bf9\u8c61<\/h3>\n

\u524d\u7aef\u8bf4\u8d77\u8c03\u8bd5\uff0c\u6700\u5e38\u7528\u7684\u80af\u5b9a\u5c31\u662fconsole.log<\/code>\u65b9\u6cd5\uff0c\u4f46\u662f console \u662f\u4e00\u4e2a\u5bf9\u8c61\uff0c\u4e0a\u9762\u8fd8\u6709\u5f88\u65b9\u4fbf\u7684\u65b9\u6cd5\u3002<\/p>\n

console.table()<\/code>\u00a0\u53ef\u7528\u4e8e\u6253\u5370 obj\/arr \u6210\u8868\u683c<\/p>\n

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<\/div>\n<\/figure>\n

console.trace()<\/code>\u00a0\u53ef\u7528\u4e8e debugger \u5806\u6808\u8c03\u8bd5\uff0c\u65b9\u4fbf\u67e5\u770b\u4ee3\u7801\u7684\u6267\u884c\u903b\u8f91\uff0c\u4e5f\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u770b\u4e00\u4e9b\u5e93\u7684\u6e90\u7801<\/p>\n

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console.count<\/code>\u4f1a\u5370\u51fa\u8fd9\u4e2a\u6807\u7b7e\u88ab\u6267\u884c\u4e86\u51e0\u6b21\uff0c\u9884\u8bbe\u503c\u662fdefault<\/code>\uff0c\u53ef\u4ee5\u7528\u5728\u5feb\u901f\u7684\u8ba1\u6570\u3002<\/p>\n

console.countReset<\/code>\u4e0e\u00a0count<\/code>\u00a0\u76f8\u751f\uff0c\u7528\u6765\u91cd\u7f6e\uff0c\u53ef\u7528\u5728\u8ba1\u7b97\u5355\u6b21\u884c\u4e3a\u7684\u89e6\u53d1\u7684\u8ba1\u6570\u3002<\/p>\n

console.group() \/ console.groupEnd();<\/code><\/p>\n

\u4e3a\u4e86\u5728\u4e00\u5927\u5806\u6df7\u4e71\u7684\u8baf\u606f\u4e2d\u4e00\u773c\u770b\u5230\u81ea\u5df1\u7684 log, \u901a\u5e38\u4f1a\u8fd9\u6837\u505a<\/p>\n

\n
console<\/span>.<\/span>log<\/span>(<\/span>\"----start-----\"<\/span>);<\/span>\r\nconsole<\/span>.<\/span>log<\/span>(<\/span>object<\/span>);<\/span>\r\nconsole<\/span>.<\/span>log<\/span>(<\/span>\"---end---\"<\/span>);<\/span>\r\n<\/code><\/pre>\n<\/div>\n
\u867d\u7136\u00a0---<\/code>\u00a0\u662f\u5f88\u663e\u773c\u6ca1\u9519\uff0c\u4f46\u5176\u5b9e\u6709\u66f4\u597d\u7684\u505a\u6cd5\uff0c\u7528console.group<\/code>\u00a0\u53ef\u4ee5\u81ea\u8ba2 Message group \u7684\u6807\u7b7e\u4e5f\u53ef\u4ee5\u591a\u5c42\u5d4c\u5957\uff0c\u5e76\u7528\u00a0console.groupEnd<\/code>\u00a0\u6765\u5173\u95ed Group<\/p>\n
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console<\/span>.<\/span>log<\/span>(<\/span>\"iteration\"<\/span>);<\/span>\r\nfor<\/span> (<\/span>var<\/span> firstLevel<\/span> =<\/span> 0<\/span>;<\/span> firstLevel<\/span> <<\/span> 2<\/span>;<\/span> firstLevel<\/span>++<\/span>)<\/span> {<\/span>\r\n  console<\/span>.<\/span>group<\/span>(<\/span>\"First level: \"<\/span>,<\/span> firstLevel<\/span>);<\/span>\r\n  for<\/span> (<\/span>var<\/span> secondLevel<\/span> =<\/span> 0<\/span>;<\/span> secondLevel<\/span> <<\/span> 2<\/span>;<\/span> secondLevel<\/span>++<\/span>)<\/span> {<\/span>\r\n    console<\/span>.<\/span>group<\/span>(<\/span>\"Second level: \"<\/span>,<\/span> secondLevel<\/span>);<\/span>\r\n    for<\/span> (<\/span>var<\/span> thirdLevel<\/span> =<\/span> 0<\/span>;<\/span> thirdLevel<\/span> <<\/span> 2<\/span>;<\/span> thirdLevel<\/span>++<\/span>)<\/span> {<\/span>\r\n      console<\/span>.<\/span>log<\/span>(<\/span>\"This is third level number: \"<\/span>,<\/span> thirdLevel<\/span>);<\/span>\r\n    }<\/span>\r\n    console<\/span>.<\/span>groupEnd<\/span>();<\/span>\r\n  }<\/span>\r\n  console<\/span>.<\/span>groupEnd<\/span>();<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n<\/div>\n
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<\/div>\n<\/figure>\n
$$(select)\u65b9\u6cd5<\/h3>\n
$(select)<\/code>\u00a0\u62ff\u5230\u7684\u662fNodeList(\u4f2a\u6570\u7ec4)\uff0c\u800c\u00a0$$(select)<\/code>\u00a0\u62ff\u5230\u7684\u5219\u662f\u4e00\u4e2a\u7eaf\u6b63\u7684\u6570\u7ec4\uff0c\u65b9\u4fbf\u6211\u4eec\u5728\u63a7\u5236\u53f0\u4e0a\u8c03\u8bd5 API,\u53ea\u6709\u5728 devtools \u4e0b\u6253\u5370\u624d\u80fd\u4f7f\u7528<\/p>\n
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<\/div>\n<\/figure>\n
2.1.3 Source<\/h3>\n
Sources<\/code>\u9762\u677f\u53ef\u4ee5\u67e5\u770b\u6d4f\u89c8\u5668\u9875\u9762\u4e2d\u7684\u6e90\u6587\u4ef6\uff08html\/js\/img\/css<\/code>\u7b49\uff09\uff0c\u70b9\u51fb\u9762\u677f\u4e0b\u65b9\u7684{}<\/code>\u5927\u62ec\u53f7\u53ef\u4ee5\u5c06\u4ee3\u7801\u8f6c\u6210\u53ef\u8bfb\u683c\u5f0f\uff0c\u540c\u65f6\u53ef\u7ed9js<\/code>\u6587\u4ef6\u6dfb\u52a0\u4e0a\u65ad\u70b9\u3002Sources<\/code>\u4e0b\u7684Snippets<\/code>\u53ef\u4ee5\u6dfb\u52a0\u6587\u4ef6\u7247\u6bb5\uff0c\u53ef\u5728\u6d4f\u89c8\u5668\u4e2d\u8fd0\u884c<\/p>\n
Breakpoints<\/h3>\n
debugger \u8bed\u53e5<\/b><\/p>\n
\u5728\u4ee3\u7801\u4e2d\u52a0\u4e0adebugger<\/code>\u8bed\u53e5\uff0c\u662f\u4ec5\u6b21\u4e8econsole.log<\/code>\u7684\u5e38\u7528\u8c03\u8bd5\u65b9\u5f0f\uff0c\u5728\u9700\u8981\u7684\u5730\u65b9\u8fdb\u884c\u6dfb\u52a0\u65ad\u70b9<\/p>\n
chrome devtool breakpoint \u4e0b\u9762\u5217\u4e3e\u4e00\u4e9b\u5e73\u5e38\u4f7f\u7528\u8f83\u591a\u7684\u65ad\u70b9\u65b9\u5f0f<\/p>\n