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var myFirstObject ={};
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¾ÉµÄ·½Ê½ÊÇʹÓÃ"new"¹Ø¼ü×Ö´´½¨Ð¶ÔÏó.
var myJSON =newObject();
ÕâÖÖ·½Ê½ÒѾ­¹ýʱ,ÏÖÔÚÁ÷Ðеķ½Ê½ÊÇͨ¹ýÒ»¶Ô´óÀ¨ºÅ¶¨ÒåÒ»¸ö¿Õ¶ÔÏó...
var myJSON ={};
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ÔÚJavascript¶ÔÏóµÄ×îµ×²ãÊÇÒ»ÖÖºÜÁé»îÇÒ½¡×³µÄÊý¾Ý¸ñʽ£¬±íʾΪ“Ãû/Öµ¶Ô”¡£Ò²¾ÍÊÇ˵,Ò»¸ö¶ÔÏóµÄÊôÐÔÃû--¿ÉÒÔ¿´×÷ÊÇÒÀ¸½ÔÚ¶ÔÏóÃûÉϵÄÒ»¸öÆÕͨ±äÁ¿.²¢ÇÒÕâ¸ö¶ÔÏó±£´æ×ÅÉÏÊöÃû×ÖµÄÖµ.¿´ÏÂÃæµÄÀý×Ó...
var myFirstJSON ={"firstName":"John",
                    "lastName"  :"Doe",
                    "age"       :23};
document.writeln(myFirstJSON.firstName);  // Êä³öJohn
document.writeln(myFirstJSON.lastName);   // Êä³öDoe
document.writeln(myFirstJSON.age);        // Êä³ö23
Õâ¸ö¶ÔÏóÓÐ3¸öÊôÐÔ»òÕß˵Ãû/Öµ¶Ô.ÔÚÕâ¸öÀý×ÓÖÐ,firstName,lastName,»¹ÓÐageÕâЩÃû×ÖÊÇ×Ö·û´®ÀàÐÍ.¶øÖµ¿ÉÒÔÊÇÈÎºÎµÄ javascript¶ÔÏó(Çë¼ÇסjavascriptÖÐÒ»Çнé¶ÔÏó,ËùÒÔÕâ¸öÖµ¿ÉÒÔÊÇ×Ö·û´®,Êý×Ö,Êý×é,º¯Êý,»¹ÓÐÆäËü¶ÔÏóÀàÐÍ) -- ÔÚÕâ¸öÀý×ÓÖÐ,ÎÒÃǵÄÖµÊÇJohn,Doe,»¹ÓÐ23.JohnÓëDoeÊÇ×Ö·û´®µ«ageÊÇÊý×Ö,ÈçÄãËù¼û,Õⶼ²»ÊÇÎÊÌâ.
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var employees ={"accounting":[   // accounting is an array in employees.
                 


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[·­Òë]High Performance JavaScript(008)

Nested Members  ǶÌ׳ÉÔ±
    Since object members may contain other members, it's not uncommon to see patterns such as window.location.href in JavaScript code. These nested members cause the JavaScript engine to go through the object member resolution process each time a dot is ......

[·­Òë]High Performance JavaScript(009)

µÚÈýÕ  DOM Scripting  DOM±à³Ì
    DOM scripting is expensive, and it's a common performance bottleneck in rich web applications. This chapter discusses the areas of DOM scripting that can have a negative effect on an application's responsiveness and gives recommendations o ......

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