JS对象键是否带引号? [英] JS object keys with or without quotes?

问题描述

可能重复:
引号和不引号?

Possible Duplicate:
What is the difference between object keys with quotes and without quotes?

有兴趣吗，用对引号或不对引号写对象键是正确的方法?那是

Is interest, what is right way, write object keys in quotes or not? that is

var obj = {
    "name": "Jhon"
}

或

var obj = {
    name: "Jhon"
}

例如，从php代码echo json_encode(array("a"=>"aaa","b"=>"bbb"));中得出的结果是具有带引号的键的对象. 但是例如，请参见jquery animate，在文档中是没有引号的键(这也是JS对象格式，对吧?)

for example, from php code echo json_encode(array("a"=>"aaa","b"=>"bbb")); result is object who has keys with quotes. But for example see jquery animate, in documentation is keys without quotes, (This is also JS object format, right?)

                $("#someElement").animate({
                    marginLeft: "200px"
                },
                {
                    duration: 1000
                });

那么，什么是正确的方法呢?

So, what is more right way?

推荐答案

不要混淆JSON对象和Javascript对象文字. JSON对象基本上只是一个字符串，其语法要求使用正确的引号.但是对于javascript对象，其属性周围的引号不是必需的.但是在某些情况下，您必须使用它们，例如:

Don't confuse JSON object and Javascript object literal. JSON object is basicly just a string and its syntax requires to have proper quotes. However for javascript object quotes around its properties are not necessary. But in some cases you have to use them, e.g:

var test = {
    "with spaces": 12
}

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