\u628a\u4e0b\u9762\u4ee3\u7801\u4fdd\u5b58\u4e3ahtml\u6587\u4ef6\uff0c\u7136\u540eIE8—F12—\u811a\u672c—\u63a7\u5236\u53f0\u91cc\u5c31\u4f1a\u51fa\u73b0\u6709\u8da3\u7684\u4e1c\u897f\uff0c\u5982\u679c\u662fFirefox\uff0c\u5b89\u88c5\u4e86FireBug\u540e\uff0c\u5219F12–\u63a7\u4ef6\u53f0–\u6240\u6709 \uff0c\u540c\u6837\u53ef\u4ee5\u770b\u5230\u3002<\/p>\n
<!DOCTYPE html PUBLIC “-\/\/W3C\/\/DTD XHTML 1.0 Transitional\/\/EN” “http:\/\/www.w3.org\/TR\/xhtml1\/DTD\/xhtml1-transitional.dtd”><\/p>\n
<html xmlns=”http:\/\/www.w3.org\/1999\/xhtml”>
\n<head>
\n<meta http-equiv=”Content-Type” content=”text\/html; charset=gb2312″ \/>
\n<title>javascript\u7684console.log()\u7528\u6cd5<\/title>
\n<script type=”text\/javascript”>
\n\/*
\nconsole.log \u539f\u5148\u662f Firefox \u7684\u201c\u4e13\u5229\u201d\uff0c\u4e25\u683c\u8bf4\u662f\u5b89\u88c5\u4e86 Firebugs \u4e4b\u540e\u7684 Firefox \u6240\u72ec\u6709\u7684\u8c03\u8bd5\u201c\u7edd\u62db\u201d\u3002
\n\u8fd9\u4e00\u62db\uff0cIE8 \u5b66\u4f1a\u4e86\uff0c\u4e0d\u8fc7\u7528\u8d77\u6765\u6bd4 Firebugs \u9ebb\u70e6\uff0c\u53ea\u6709\u5728\u5f00\u542f\u8c03\u8bd5\u7a97\u53e3(F12)\u7684\u65f6\u5019\uff0cconsole.log \u624d\u80fd\u51fa\u7ed3\u679c\uff0c\u4e0d\u7136\u5c31\u62a5\u9519\u3002
\n\u4eca\u5929\u770b\u5230 Opera \u4e5f\u6709\u4e2a\u53eb dragonfly \u7684\u4e1c\u4e1c\uff0c\u7528\u8fd9\u4e1c\u897f\u67e5\u770b DOM\uff0c\u5df2\u7ecf\u53ef\u4ee5\u548c Firebug \u5ab2\u7f8e\uff0c\u7136\u800c\u8fd8\u662f\u4e0d\u80fd\u7528 console.log\u3002\u4e8e\u662f\u6709\u4eba\u5c31\u63d0\u4f9b\u4e86\u8fd9\u6837\u4e24\u53e5\u4ee3\u7801\uff1a
\nwindow.console = window.console || {};
\nconsole.log || (console.log = opera.postError)\uff1b
\n\u7ecf\u6d4b\u8bd5\uff0c\u4ee5\u4e0a\u4ee3\u7801\u597d\u4f7f\u3002
\n\u81f3\u6b64\uff0cFirefox\/IE\/Opera \u90fd\u80fd\u7528\u4e0a console.log \u4e86\u3002
\n\u5f53\u7136\uff0cIE \u548c Opera \u4e0b\u7684 console.log \u6bd4\u8d77 Firebugs \u539f\u521b\u7684 console.log\uff0c\u8fd8\u662f\u592a\u8fc7\u7b80\u5355\uff0c\u6bd4\u5982\u53c2\u6570\u662f Object \u6216\u8005\u6570\u7ec4\u5c31\u6ca1\u6709\u8fdb\u4e00\u6b65\u7684\u663e\u793a\u529f\u80fd\u3002
\n*\/<\/p>\n
\/\/\u53d8\u91cf
\nvar i = ‘I am a string’;
\nconsole.log(‘\u53d8\u91cf\uff1a’,i);<\/p>\n
\/\/\u6570\u7ec4
\nvar arr = [1,2,3,4,5];
\nconsole.log(‘\u6570\u7ec4\uff1a’,arr);<\/p>\n
\/\/\u5bf9\u8c61
\nvar obj1 = {
\nkey1 : ‘value1’,
\nkey2 : ‘value2’,
\nkey3 : ‘value3’
\n};
\nvar obj2 = {
\nkey6 : ‘value4’,
\nkey5 : ‘value5’,
\nkey4 : ‘value6’
\n};
\nvar obj3 = {
\nkey9 : ‘value7’,
\nkey8 : ‘value8’,
\nkey7 : ‘value9’
\n};<\/p>\n
console.log(‘\u5bf9\u8c61\uff1a’,obj1);
\n\/\/\u5bf9\u8c61\u6570\u7ec4
\nvar objArr1 = [obj1,obj2,obj3];
\nvar objArr2 = [[obj1],[obj2],[obj3]];<\/p>\n
console.log(‘\u5bf9\u8c61\u6570\u7ec41\uff1a’,objArr1);
\nconsole.log(‘\u5bf9\u8c61\u6570\u7ec41\uff1a’,objArr2);
\n\/*
\n\u8f93\u51fa\uff1a
\n\u53d8\u91cf\uff1aI am a string
\n\u6570\u7ec4\uff1a[1, 2, 3, 4, 5]
\n\u5bf9\u8c61\uff1aObject { key1=”value1″, key2=”value2″, key3=”value3″}
\n\u5bf9\u8c61\u6570\u7ec41\uff1a[Object { key1=”value1″, key2=”value2″, key3=”value3″}, Object { key6=”value4″, key5=”value5″, key4=”value6″}, Object { key9=”value7″, key8=”value8″, key7=”value9″}]
\n\u5bf9\u8c61\u6570\u7ec41\uff1a[[Object { key1=”value1″, key2=”value2″, key3=”value3″}], [Object { key6=”value4″, key5=”value5″, key4=”value6″}], [Object { key9=”value7″, key8=”value8″, key7=”value9″}]]
\n*\/
\n<\/script><\/p>\n
<\/head><\/p>\n
<body>
\n<\/body><\/p>\n
<\/html><\/p>\n
\u9644\uff1a<\/p>\n
Firebug & Chrome Console \u63a7\u5236\u53f0\u7684\u4e00\u4e9b\u5176\u4ed6\u529f\u80fd<\/strong> var animal=’frog’, count=10; console.info(object[, object, …]) console.warn(object[, object, …]) console.error(object[, object, …]) console.assert(expression[, object, …]) console.dir(object) console.dirxml(node) console.trace() console.group(object[, object, …]) console.groupCollapsed() console.time(name) console.profile([title]) console.count([title]) console.clear() \u547d\u4ee4\u884c $(id) $$(selector) $x(xpath) $0 $1 $n(index) dir(object) dirxml(node) clear() inspect(object[, tabName])() keys(object) values(object) debug(fn) monitor(fn) monitorEvents(object[, types]) monitorEvents($0,[‘click’]) profile([title]) \u628a\u4e0b\u9762\u4ee3\u7801\u4fdd\u5b58\u4e3ahtml\u6587\u4ef6\uff0c\u7136\u540eIE8—F12—\u811a\u672c—\u63a7\u5236\u53f0\u91cc\u5c31\u4f1a\u51fa\u73b0\u6709\u8da3\u7684\u4e1c\u897f\uff0c\u5982\u679c\u662fFirefox\uff0c\u5b89\u88c5\u4e86FireBug\u540e\uff0c\u5219F12–\u63a7\u4ef6\u53f0–\u6240\u6709 \uff0c\u540c\u6837\u53ef\u4ee5\u770b\u5230\u3002 <…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,5,1],"tags":[395,23],"topic":[],"class_list":["post-68101","post","type-post","status-publish","format-standard","hentry","category-htmlcss","category-wx","category-technology","tag-console-log","tag-js"],"_links":{"self":[{"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/posts\/68101","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/comments?post=68101"}],"version-history":[{"count":1,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/posts\/68101\/revisions"}],"predecessor-version":[{"id":68102,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/posts\/68101\/revisions\/68102"}],"wp:attachment":[{"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/media?parent=68101"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/categories?post=68101"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/tags?post=68101"},{"taxonomy":"topic","embeddable":true,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/topic?post=68101"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nconsole.log(object[, object, …])
\n\u4f7f\u7528\u9891\u7387\u6700\u9ad8\u7684\u4e00\u6761\u8bed\u53e5\uff1a\u5411\u63a7\u5236\u53f0\u8f93\u51fa\u4e00\u6761\u6d88\u606f\u3002\u652f\u6301 C \u8bed\u8a00 printf \u5f0f\u7684\u683c\u5f0f\u5316\u8f93\u51fa\u3002\u5f53\u7136\uff0c\u4e5f\u53ef\u4ee5\u4e0d\u4f7f\u7528\u683c\u5f0f\u5316\u8f93\u51fa\u6765\u8fbe\u5230\u540c\u6837\u7684\u76ee\u7684\uff1a<\/p>\n
\nconsole.log(“The %s jumped over %d tall buildings”, animal, count);
\nconsole.log(“The”, animal, “jumped over”, count, “tall buildings”);
\nconsole.debug(object[, object, …])
\n\u5411\u63a7\u5236\u53f0\u8f93\u51fa\u4e00\u6761\u4fe1\u606f\uff0c\u5b83\u5305\u62ec\u4e00\u4e2a\u6307\u5411\u8be5\u884c\u4ee3\u7801\u4f4d\u7f6e\u7684\u8d85\u94fe\u63a5\u3002<\/p>\n
\n\u5411\u63a7\u5236\u53f0\u8f93\u51fa\u4e00\u6761\u4fe1\u606f\uff0c\u8be5\u4fe1\u606f\u5305\u542b\u4e00\u4e2a\u8868\u793a\u201c\u4fe1\u606f\u201d\u7684\u56fe\u6807\uff0c\u548c\u6307\u5411\u8be5\u884c\u4ee3\u7801\u4f4d\u7f6e\u7684\u8d85\u94fe\u63a5\u3002<\/p>\n
\n\u540c info\u3002\u533a\u522b\u662f\u56fe\u6807\u4e0e\u6837\u5f0f\u4e0d\u540c\u3002<\/p>\n
\n\u540c info\u3002\u533a\u522b\u662f\u56fe\u6807\u4e0e\u6837\u5f0f\u4e0d\u540c\u3002error \u5b9e\u9645\u4e0a\u548c throw new Error() \u4ea7\u751f\u7684\u6548\u679c\u76f8\u540c\uff0c\u4f7f\u7528\u8be5\u8bed\u53e5\u65f6\u4f1a\u5411\u6d4f\u89c8\u5668\u629b\u51fa\u4e00\u4e2a js \u5f02\u5e38\u3002<\/p>\n
\n\u65ad\u8a00\uff0c\u6d4b\u8bd5\u4e00\u6761\u8868\u8fbe\u5f0f\u662f\u5426\u4e3a\u771f\uff0c\u4e0d\u4e3a\u771f\u65f6\u5c06\u629b\u51fa\u5f02\u5e38\uff08\u65ad\u8a00\u5931\u8d25\uff09\u3002<\/p>\n
\n\u8f93\u51fa\u4e00\u4e2a\u5bf9\u8c61\u7684\u5168\u90e8\u5c5e\u6027\uff08\u8f93\u51fa\u7ed3\u679c\u7c7b\u4f3c\u4e8e DOM \u9762\u677f\u4e2d\u7684\u6837\u5f0f\uff09\u3002<\/p>\n
\n\u8f93\u51fa\u4e00\u4e2a HTML \u6216\u8005 XML \u5143\u7d20\u7684\u7ed3\u6784\u6811\uff0c\u70b9\u51fb\u7ed3\u6784\u6811\u4e0a\u9762\u7684\u8282\u70b9\u8fdb\u5165\u5230 HTML \u9762\u677f\u3002<\/p>\n
\n\u8f93\u51fa Javascript \u6267\u884c\u65f6\u7684\u5806\u6808\u8ffd\u8e2a\u3002<\/p>\n
\n\u8f93\u51fa\u6d88\u606f\u7684\u540c\u65f6\u6253\u5f00\u4e00\u4e2a\u5d4c\u5957\u5757\uff0c\u7528\u4ee5\u7f29\u8fdb\u8f93\u51fa\u7684\u5185\u5bb9\u3002\u8c03\u7528 console.groupEnd() \u7528\u4ee5\u7ed3\u675f\u8fd9\u4e2a\u5757\u7684\u8f93\u51fa\u3002<\/p>\n
\n\u540c console.group(); \u533a\u522b\u5728\u4e8e\u5d4c\u5957\u5757\u9ed8\u8ba4\u662f\u6536\u8d77\u7684\u3002<\/p>\n
\n\u8ba1\u65f6\u5668\uff0c\u5f53\u8c03\u7528 console.timeEnd(name);\u5e76\u4f20\u9012\u76f8\u540c\u7684 name \u4e3a\u53c2\u6570\u65f6\uff0c\u8ba1\u65f6\u505c\u6b62\uff0c\u5e76\u8f93\u51fa\u6267\u884c\u4e24\u6761\u8bed\u53e5\u4e4b\u95f4\u4ee3\u7801\u6240\u6d88\u8017\u7684\u65f6\u95f4\uff08\u6beb\u79d2\uff09\u3002<\/p>\n
\n\u4e0e profileEnd() \u7ed3\u5408\u4f7f\u7528\uff0c\u7528\u6765\u505a\u6027\u80fd\u6d4b\u8bd5\uff0c\u4e0e console \u9762\u677f\u4e0a profile \u6309\u94ae\u7684\u529f\u80fd\u5b8c\u5168\u76f8\u540c\u3002<\/p>\n
\n\u8f93\u51fa\u8be5\u884c\u4ee3\u7801\u88ab\u6267\u884c\u7684\u6b21\u6570\uff0c\u53c2\u6570 title \u5c06\u5728\u8f93\u51fa\u65f6\u4f5c\u4e3a\u8f93\u51fa\u7ed3\u679c\u7684\u524d\u7f00\u4f7f\u7528\u3002<\/p>\n
\n\u6e05\u7a7a\u63a7\u5236\u53f0<\/p>\n
\n\u63a7\u5236\u53f0\u7684\u8f93\u51fa\u9762\u677f\u53f3\u8fb9\uff0c\u662f\u63a7\u5236\u53f0\u7684\u8f93\u5165\u9762\u677f\uff08Chrome \u8c03\u8bd5\u5de5\u5177\u5bf9\u5e94\u4e3a\u4e0b\u65b9\uff09\uff0c\u5728\u8fd9\u91cc\u9664\u4e86\u53ef\u4ee5\u8fd0\u884c\u5e38\u89c4\u7684 javascript \u4ee3\u7801\uff0c\u8fd8\u5185\u7f6e\u4e86\u76f8\u5f53\u6570\u91cf\u7684\u547d\u4ee4\u884c\u53ef\u4ee5\u8f85\u52a9\u6211\u4eec\u7684\u8c03\u8bd5\u5de5\u4f5c\uff0c\u4e0b\u9762\u662f\u4e00\u4e9b\u5e38\u7528\u547d\u4ee4\u884c\u7684\u7b80\u5355\u4ecb\u7ecd\u3002<\/p>\n
\n\u8fd4\u56de\u4e00\u4e2a\u7ed9\u5b9a id \u7684\u5143\u7d20\u3002<\/p>\n
\n\u8fd4\u56de\u7ed9\u5b9a\u7684 css \u9009\u62e9\u5668\u5339\u914d\u5230\u7684\u4e00\u7ec4\u5143\u7d20\u3002<\/p>\n
\n\u8fd4\u56de\u7ed9\u5b9a\u7684 XPath \u8868\u8fbe\u5f0f\u5339\u914d\u5230\u7684\u4e00\u7ec4\u5143\u7d20\u3002<\/p>\n
\n\u5728 HTML \u9762\u677f\u4e2d\u9009\u4e2d\u7684\u5143\u7d20\u3002<\/p>\n
\n\u4e0a\u4e00\u6b21\u5728 HTML \u9762\u677f\u4e2d\u9009\u4e2d\u7684\u5143\u7d20\u3002<\/p>\n
\n\u8bbf\u95ee\u6700\u8fd1 5 \u4e2a\u88ab\u9009\u4e2d\u8fc7\u7684\u5143\u7d20\uff0cindex \u7684\u8303\u56f4\uff1a 0 \u2013 4\u3002<\/p>\n
\n\u540c console.dir(object)\u3002<\/p>\n
\n\u540c console.dirxml(node)\u3002<\/p>\n
\n\u540c console.clear()\u3002<\/p>\n
\n\u5728\u5408\u9002\u7684\uff08\u6216\u4e00\u4e2a\u6307\u5b9a\u7684\uff09 tab \u4e2d\u68c0\u89c6\u4e00\u4e2a\u5bf9\u8c61\u3002<\/p>\n
\n\u8fd4\u56de\u4e00\u4e2a\u5bf9\u8c61\u7684\u6240\u6709\u5c5e\u6027\u7684\u952e\u3002<\/p>\n
\n\u8fd4\u56de\u4e00\u4e2a\u5bf9\u8c61\u7684\u6240\u6709\u5c5e\u6027\u7684\u503c\u3002<\/p>\n
\n\u5728\u51fd\u6570\u7b2c\u4e00\u884c\u6dfb\u52a0\u4e00\u4e2a\u65ad\u70b9\uff0c\u4f7f\u7528 undebug(fn) \u79fb\u9664\u65ad\u70b9\u3002<\/p>\n
\n\u5f00\u542f\u4e00\u4e2a\u51fd\u6570\u7684\u8c03\u7528\u65e5\u5fd7\uff0c\u4f7f\u7528 unmonitor(fn) \u5173\u95ed\u8be5\u529f\u80fd\u3002\u975e\u5e38\u6709\u7528\u7684\u4e00\u4e2a\u547d\u4ee4\uff0c\u4f46\u662f\u5b83\u4f3c\u4e4e\u5e76\u6ca1\u6709\u5f88\u597d\u5730\u5de5\u4f5c\u3002<\/p>\n
\n\u5f00\u542f\u4e00\u4e2a\u5143\u7d20\u7684\u67d0\u4e2a\u4e8b\u4ef6\uff08\u6216\u6240\u6709\u4e8b\u4ef6\uff09\u88ab\u89e6\u53d1\u65f6\u7684\u65e5\u5fd7\u8bb0\u5f55\u3002\u7528\u4f8b\u5982\u4e0b\uff1a<\/p>\n
\n\u4e0a\u9762\u7684\u547d\u4ee4\u884c\u88ab\u6267\u884c\u540e\uff0c\u5c06\u5f00\u542f\u5f53\u524d\u5728 HTML \u9762\u677f\u4e2d\u88ab\u9009\u4e2d\u5143\u7d20\u7684 click \u4e8b\u4ef6\u76d1\u63a7\uff0c\u4e00\u65e6\u8fd9\u4e2a\u5143\u7d20\u7684 click \u4e8b\u4ef6\u88ab\u89e6\u53d1\uff0c\u4e8b\u4ef6\u5bf9\u8c61\u5c06\u4f1a\u5728\u63a7\u5236\u53f0\u8f93\u51fa\u3002\u5982\u679c\u4e0d\u6307\u5b9a\u7b2c\u4e8c\u4e2a\u53c2\u6570\uff0c\u5c06\u5bf9\u6240\u6709\u4e8b\u4ef6\u8fdb\u884c\u8bb0\u5f55\u3002<\/p>\n
\n\u540c console.profile([title])<\/p>\n","protected":false},"excerpt":{"rendered":"