\u6bcf\u79cd\u8bed\u8a00\u90fd\u6709\u5b83\u7279\u522b\u7684\u5730\u65b9\uff0c\u5bf9\u4e8eJavaScript\u6765\u8bf4\uff0c\u4f7f\u7528var\u5c31\u53ef\u4ee5\u58f0\u660e\u4efb\u610f\u7c7b\u578b\u7684\u53d8\u91cf\uff0c\u8fd9\u95e8\u811a\u672c\u8bed\u8a00\u770b\u8d77\u6765\u5f88\u7b80\u5355\uff0c\u7136\u800c\u60f3\u8981\u5199\u51fa\u4f18\u96c5\u7684\u4ee3\u7801\u5374\u662f\u9700\u8981\u4e0d\u65ad\u79ef\u7d2f\u7ecf\u9a8c\u7684\u3002\u672c\u6587\u5229\u5217\u4e3e\u4e86JavaScript\u521d\u5b66\u8005\u5e94\u8be5\u6ce8\u610f\u7684\u4e03\u4e2a\u7ec6\u8282\uff0c\u4e0e\u5927\u5bb6\u5206\u4eab\u3002<\/p>\n
\uff081\uff09\u7b80\u5316\u4ee3\u7801<\/p>\n
JavaScript\u5b9a\u4e49\u5bf9\u8c61\u548c\u6570\u7ec4\u975e\u5e38\u7b80\u5355\uff0c\u6211\u4eec\u60f3\u8981\u521b\u5efa\u4e00\u4e2a\u5bf9\u8c61\uff0c\u4e00\u822c\u662f\u8fd9\u6837\u5199\u7684\uff1a<\/p>\n
\r\nvar car =new Object();\r\ncar.colour =\u2019red\u2019;\r\ncar.wheels = 4;\r\ncar.hubcaps =\u2019spinning\u2019;\r\ncar.age = 4;\r\n<\/pre>\n\u4e0b\u9762\u7684\u5199\u6cd5\u53ef\u4ee5\u8fbe\u5230\u540c\u6837\u7684\u6548\u679c\uff1a<\/p>\n
\r\nvar car = {\r\n colour:\u2019red\u2019,\r\n wheels:4,\r\nhubcaps:\u2019spinning\u2019,\r\nage:4\r\n}\r\n<\/pre>\n\u540e\u9762\u7684\u5199\u6cd5\u8981\u77ed\u5f97\u591a\uff0c\u800c\u4e14\u4f60\u4e0d\u9700\u8981\u91cd\u590d\u5199\u5bf9\u8c61\u540d\u79f0\u3002<\/p>\n
\u53e6\u5916\u5bf9\u4e8e\u6570\u7ec4\u540c\u6837\u6709\u7b80\u6d01\u7684\u5199\u6cd5\uff0c\u8fc7\u53bb\u6211\u4eec\u58f0\u660e\u6570\u7ec4\u662f\u8fd9\u6837\u5199\u7684\uff1a<\/p>\n
\r\nvar moviesThatNeedBetterWriters = new Array(\r\n \u2018Transformers\u2019,'Transformers2\u2032,\u2019Avatar\u2019,'Indiana Jones 4\u2032\r\n);\r\n<\/pre>\n\u66f4\u7b80\u6d01\u7684\u5199\u6cd5\u662f\uff1a<\/p>\n
\r\nvar moviesThatNeedBetterWriters = [\r\n 'Transformers','Transformers2','Avatar','Indiana Jones 4'\r\n];\r\n<\/pre>\n\u5bf9\u4e8e\u6570\u7ec4\uff0c\u8fd8\u6709\u5173\u8054\u6570\u7ec4\u8fd9\u6837\u4e00\u4e2a\u7279\u522b\u7684\u4e1c\u897f\u3002 \u4f60\u4f1a\u53d1\u73b0\u5f88\u591a\u4ee3\u7801\u662f\u8fd9\u6837\u5b9a\u4e49\u5bf9\u8c61\u7684\uff1a<\/p>\n
\r\nvar car = new Array();\r\ncar['colour'] = \u2018red\u2019;\r\ncar['wheels'] = 4;\r\ncar['hubcaps'] = \u2018spinning\u2019;\r\ncar['age'] = 4;\r\n<\/pre>\n\u8fd9\u592a\u75af\u72c2\u4e86\uff0c\u4e0d\u8981\u89c9\u5f97\u56f0\u60d1\uff0c\u201c\u5173\u8054\u6570\u7ec4\u201d\u53ea\u662f\u5bf9\u8c61\u7684\u4e00\u4e2a\u522b\u540d\u800c\u5df2\u3002<\/p>\n
\u53e6\u5916\u4e00\u4e2a\u7b80\u5316\u4ee3\u7801\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u4e09\u5143\u8fd0\u7b97\u7b26\uff0c\u4e3e\u4e2a\u4f8b\u5b50\uff1a<\/p>\n
\r\nvar direction;\r\nif(x < 200){\r\n direction = 1;\r\n} else {\r\n direction = -1;\r\n}\r\n<\/pre>\n\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u7684\u4ee3\u7801\u66ff\u6362\u8fd9\u79cd\u5199\u6cd5\uff1a<\/p>\n
\r\nvar direction = x < 200 ? 1 : -1;\r\n<\/pre>\n\uff082\uff09\u4f7f\u7528JSON\u4f5c\u4e3a\u6570\u636e\u683c\u5f0f<\/p>\n
\u4f1f\u5927\u7684Douglas Crockford\u53d1\u660e\u4e86JSON\u6570\u636e\u683c\u5f0f\u6765\u5b58\u50a8\u6570\u636e\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u539f\u751f\u7684javascript\u65b9\u6cd5\u6765\u5b58\u50a8\u590d\u6742\u7684\u6570\u636e\u800c\u4e0d\u9700\u8981\u8fdb\u884c\u4efb\u4f55\u989d\u5916\u7684\u8f6c\u6362\uff0c\u4f8b\u5982\uff1a<\/p>\n
\r\n var band = {\r\n \u201cname\u201d:\u201dThe Red Hot Chili Peppers\u201d,\r\n \u201cmembers\u201d:[\r\n {\r\n "name":"Anthony Kiedis",\r\n "role":"lead vocals"\r\n },\r\n {\r\n "name":"Michael 'Flea' Balzary",\r\n "role":"bass guitar, trumpet, backing vocals"\r\n },\r\n {\r\n "name":"Chad Smith",\r\n "role":"drums,percussion"\r\n },\r\n {\r\n "name":"John Frusciante",\r\n "role":"Lead Guitar"\r\n }\r\n ],\r\n \u201cyear\u201d:\u201d2009\u2033\r\n }\r\n<\/pre>\n\u4f60\u53ef\u4ee5\u4f7f\u7528\u5728JavaScript\u4e2d\u76f4\u63a5\u4f7f\u7528JSON\uff0c\u751a\u81f3\u4f5c\u4e3aAPI\u8fd4\u56de\u7684\u4e00\u79cd\u683c\u5f0f\uff0c\u8fd9\u5c31\u662f\u6240\u8c13\u7684JSON \u2013 P\uff0c\u5728\u8bb8\u591a\u7684API\u4e2d\u88ab\u5e94\u7528\uff0c\u4f8b\u5982\uff1a<\/p>\n
\r\n <div id=\u201ddelicious\u201d><\/div><script>\r\n function delicious(o){\r\n var out = \u2018<ul>\u2019;\r\n for(var i=0;i<o.length;i++){\r\n out += \u2018<li><a href=\u201d\u2018 + o[i].u + \u2018\u201d>\u2019 +\r\n o[i].d + \u2018<\/a><\/li>\u2019;\r\n }\r\n out += \u2018<\/ul>\u2019;\r\n document.getElementById(\u2018delicious\u2019).innerHTML = out;\r\n }\r\n <\/script>\r\n <script src=\u201d<\/script\u2019>http:\/\/feeds.delicious.com\/v2\/json\/codepo8\/javascript?count=15&callback=delicious\u201d><\/script>\r\n<\/pre>\n\u8fd9\u91cc\u8c03\u7528delicious \u7684Web\u670d\u52a1\u83b7\u53d6\u6700\u65b0\u4e66\u7b7e\uff0c\u4ee5JSON\u683c\u5f0f\u8fd4\u56de\uff0c\u7136\u540e\u5c06\u5b83\u4eec\u663e\u793a\u6210\u65e0\u5e8f\u5217\u8868\u7684\u5f62\u5f0f\u3002<\/p>\n
\u4ece\u672c\u8d28\u4e0a\u8bb2\uff0cJSON\u662f\u7528\u4e8e\u63cf\u8ff0\u590d\u6742\u7684\u6570\u636e\u6700\u8f7b\u91cf\u7ea7\u7684\u65b9\u5f0f\uff0c\u800c\u4e14\u76f4\u63a5\u5b83\u8fd0\u884c\u5728\u6d4f\u89c8\u5668\u4e2d\u3002 \u4f60\u751a\u81f3\u53ef\u4ee5\u5728PHP\u4e2d\u8c03\u7528 json_decode\uff08\uff09\u51fd\u6570\u6765\u4f7f\u7528\u5b83\u3002<\/p>\n
\uff083\uff09\u5c3d\u91cf\u4f7f\u7528JavaScript\u539f\u751f\u51fd\u6570<\/p>\n
\u8981\u627e\u4e00\u7ec4\u6570\u5b57\u4e2d\u7684\u6700\u5927\u6570\uff0c\u6211\u4eec\u53ef\u80fd\u4f1a\u5199\u4e00\u4e2a\u5faa\u73af\uff0c\u4f8b\u5982\uff1a<\/p>\n
\r\nvar numbers = [3,342,23,22,124];\r\nvar max = 0;\r\nfor(var i=0;i<numbers.length;i++){\r\n if(numbers[i] > max){\r\n max = numbers[i];\r\n }\r\n}\r\nalert(max);\r\n<\/pre>\n\u5176\u5b9e\uff0c\u4e0d\u7528\u5faa\u73af\u53ef\u4ee5\u5b9e\u73b0\u540c\u6837\u7684\u529f\u80fd\uff1a<\/p>\n
\r\nvar numbers = [3,342,23,22,124];\r\nnumbers.sort(function(a,b){return b \u2013 a});\r\nalert(numbers[0]);\r\n<\/pre>\n\u800c\u6700\u7b80\u6d01\u7684\u5199\u6cd5\u662f\uff1a<\/p>\n
\r\nMath.max(12,123,3,2,433,4); \/\/ returns 433\r\n<\/pre>\n\u4f60\u751a\u81f3\u53ef\u4ee5\u4f7f\u7528Math.max\u6765\u68c0\u6d4b\u6d4f\u89c8\u5668\u652f\u6301\u54ea\u4e2a\u5c5e\u6027\uff1a<\/p>\n
\r\nvar scrollTop= Math.max(\r\n doc.documentElement.scrollTop,\r\n doc.body.scrollTop\r\n);\r\n<\/pre>\n\u5982\u679c\u4f60\u60f3\u7ed9\u4e00\u4e2a\u5143\u7d20\u589e\u52a0class\u6837\u5f0f\uff0c\u53ef\u80fd\u539f\u59cb\u7684\u5199\u6cd5\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n
\r\nfunction addclass(elm,newclass){\r\n var c = elm.className;\r\n elm.className = (c === \u201d) ? newclass : c+\u2019 \u2018+newclass;\r\n<\/pre>\n\u800c\u66f4\u4f18\u96c5\u7684\u5199\u6cd5\u662f\uff1a<\/p>\n
\r\nfunction addclass(elm,newclass){\r\n var classes = elm.className.split(\u2018 \u2018);\r\n classes.push(newclass);\r\n elm.className = classes.join(\u2018 \u2018);\r\n}\r\n<\/pre>\n\uff084\uff09\u4e8b\u4ef6\u59d4\u6258<\/p>\n
\u4e8b\u4ef6\u662fJavaScript\u975e\u5e38\u91cd\u8981\u7684\u4e00\u90e8\u5206\u3002\u6211\u4eec\u60f3\u7ed9\u4e00\u4e2a\u5217\u8868\u4e2d\u7684\u94fe\u63a5\u7ed1\u5b9a\u70b9\u51fb\u4e8b\u4ef6\uff0c\u4e00\u822c\u7684\u505a\u6cd5\u662f\u5199\u4e00\u4e2a\u5faa\u73af\uff0c\u7ed9\u6bcf\u4e2a\u94fe\u63a5\u5bf9\u8c61\u7ed1\u5b9a\u4e8b\u4ef6\uff0cHTML\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
\r\n<h2>Great Web resources<\/h2>\r\n<ul id=\u201dresources\u201d>\r\n <li><a href=\u201dhttp:\/\/opera.com\/wsc\u201d>OperaWeb Standards Curriculum<\/a><\/li>\r\n <li><a href=\u201dhttp:\/\/sitepoint.com\u201d>Sitepoint<\/a><\/li>\r\n <li><a href=\u201dhttp:\/\/alistapart.com\u201d>AList Apart<\/a><\/li>\r\n <li><a href=\u201dhttp:\/\/yuiblog.com\u201d>YUIBlog<\/a><\/li>\r\n <li><a href=\u201dhttp:\/\/blameitonthevoices.com\u201d>Blameit on the voices<\/a><\/li>\r\n <li><a href=\u201dhttp:\/\/oddlyspecific.com\u201d>Oddlyspecific<\/a><\/li>\r\n<\/ul>\r\n<\/pre>\n\u811a\u672c\u5982\u4e0b\uff1a<\/p>\n
\r\n\/\/ Classic event handling example\r\n(function(){\r\n var resources = document.getElementById(\u2018resources\u2019);\r\n var links = resources.getElementsByTagName(\u2018a\u2019);\r\n var all = links.length;\r\n for(var i=0;i<all;i++){\r\n \/\/ Attach a listener to each link\r\n links[i].addEventListener(\u2018click\u2019,handler,false);\r\n };\r\n function handler(e){\r\n var x = e.target; \/\/ Get the link that was clicked\r\n alert(x);\r\n e.preventDefault();\r\n };\r\n})();\r\n<\/pre>\n\u66f4\u5408\u7406\u7684\u5199\u6cd5\u662f\u53ea\u7ed9\u5217\u8868\u7684\u7236\u5bf9\u8c61\u7ed1\u5b9a\u4e8b\u4ef6\uff0c\u8fd9\u6837\u53ef\u884c\u7684\u539f\u7406\u5728\u4e8e\u4e8b\u4ef6\u662f\u652f\u6301\u5192\u6ce1\u7684\uff0c\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
\r\n(function(){\r\n var resources = document.getElementById(\u2018resources\u2019);\r\n resources.addEventListener(\u2018click\u2019,handler,false);\r\n function handler(e){\r\n var x = e.target; \/\/ get the link tha\r\n if(x.nodeName.toLowerCase() === \u2018a\u2019){\r\n alert(\u2018Event delegation:\u2019 + x);\r\n e.preventDefault();\r\n }\r\n };\r\n})();\r\n<\/pre>\n\uff085\uff09\u533f\u540d\u51fd\u6570<\/p>\n
\u5173\u4e8eJavaScript\u7684\u6700\u5934\u75bc\u7684\u4e8b\u60c5\u4e4b\u4e00\u662f\uff0c\u5b83\u7684\u53d8\u91cf\u6ca1\u6709\u7279\u5b9a\u7684\u4f5c\u7528\u8303\u56f4\u3002 \u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u4efb\u4f55\u53d8\u91cf\uff0c\u51fd\u6570\uff0c\u6570\u7ec4\u6216\u5bf9\u8c61\u90fd\u662f\u5168\u5c40\u6027\uff0c\u8fd9\u610f\u5473\u7740\u5728\u540c\u4e00\u9875\u4e0a\u7684\u5176\u4ed6\u811a\u672c\u53ef\u4ee5\u8bbf\u95ee\u5e76\u8986\u76d6\u5b83\u4eec\u3002\u89e3\u51b3\u65b9\u6cd5\u662f\u628a\u53d8\u91cf\u5c01\u88c5\u5728\u4e00\u4e2a\u533f\u540d\u51fd\u6570\u4e2d\u3002 \u4f8b\u5982\uff0c\u4e0b\u9762\u7684\u5b9a\u4e49\u5c06\u4ea7\u751f\u4e09\u4e2a\u5168\u5c40\u53d8\u91cf\u548c\u548c\u4e24\u4e2a\u5168\u5c40\u51fd\u6570\uff1a<\/p>\n
\r\nvar name = \u2018Chris\u2019;\r\nvar age = \u201934\u2032;\r\nvar status = \u2018single\u2019;\r\nfunction createMember(){\r\n \/\/ [...]\r\n}\r\nfunction getMemberDetails(){\r\n \/\/ [...]\r\n}\r\n<\/pre>\n\u5c01\u88c5\u540e\u5982\u4e0b\uff1a<\/p>\n
\r\nvar myApplication = function(){\r\n var name = \u2018Chris\u2019;\r\n var age = \u201934\u2032;\r\n var status = \u2018single\u2019;\r\n return{\r\n createMember:function(){\r\n \/\/ [...]\r\n },\r\n getMemberDetails:function(){\r\n \/\/ [...]\r\n }\r\n }\r\n}();\r\n\/\/ myApplication.createMember() and\r\n\/\/ myApplication.getMemberDetails() now works.\r\n<\/pre>\n\u8fd9\u88ab\u79f0\u4e3a\u5355\u4f53\u6a21\u5f0f\uff0c\u662fJavaScript\u8bbe\u8ba1\u6a21\u5f0f\u7684\u4e00\u79cd\uff0c\u8fd9\u79cd\u6a21\u5f0f\u5728YUI\u4e2d\u7528\u5f97\u975e\u5e38\u591a\uff0c\u6539\u8fdb\u7684\u5199\u6cd5\u662f\uff1a<\/p>\n
\r\nvar myApplication = function(){\r\n var name = \u2018Chris\u2019;\r\n var age = \u201934\u2032;\r\n var status = \u2018single\u2019;\r\n function createMember(){\r\n \/\/ [...]\r\n }\r\n function getMemberDetails(){\r\n \/\/ [...]\r\n }\r\n return{\r\n create:createMember,\r\n get:getMemberDetails\r\n }\r\n}();\r\n\/\/myApplication.get() and myApplication.create() now work.\r\n<\/pre>\n\uff086\uff09\u4ee3\u7801\u53ef\u914d\u7f6e<\/p>\n
\u4f60\u5199\u7684\u4ee3\u7801\u5982\u679c\u60f3\u8ba9\u522b\u4eba\u66f4\u5bb9\u6613\u8fdb\u884c\u4f7f\u7528\u6216\u8005\u4fee\u6539\uff0c\u5219\u9700\u8981\u53ef\u914d\u7f6e\uff0c\u89e3\u51b3\u65b9\u6848\u662f\u5728\u4f60\u5199\u7684\u811a\u672c\u4e2d\u589e\u52a0\u4e00\u4e2a\u914d\u7f6e\u5bf9\u8c61\u3002\u8981\u70b9\u5982\u4e0b\uff1a<\/p>\n
1\u3001\u5728\u4f60\u7684\u811a\u672c\u4e2d\u65b0\u589e\u4e00\u4e2a\u53ebconfiguration\u7684\u5bf9\u8c61\u3002<\/p>\n
2\u3001\u5728\u914d\u7f6e\u5bf9\u8c61\u4e2d\u5b58\u653e\u6240\u6709\u5176\u5b83\u4eba\u53ef\u80fd\u60f3\u8981\u53bb\u6539\u53d8\u7684\u4e1c\u897f\uff0c\u4f8b\u5982CSS\u7684ID\u3001class\u540d\u79f0\u3001\u8bed\u8a00\u7b49\u7b49\u3002<\/p>\n
3\u3001\u8fd4\u56de\u8fd9\u4e2a\u5bf9\u8c61\uff0c\u4f5c\u4e3a\u516c\u5171\u5c5e\u6027\u4ee5\u4fbf\u5176\u5b83\u4eba\u53ef\u4ee5\u8fdb\u884c\u91cd\u5199\u3002<\/p>\n
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