在JS中我們可以直接定義一個對象：
代碼如下:
var obj={name:"藍色",age:10};

上面其實就是所謂的JSON了，我引用下別人的復雜點的例子：
代碼如下:
{ firstName: "Brett", lastName:"McLaughlin", email: "brett@Vevb.com" }

代碼如下:
{ people: [
{ firstName: "Brett", lastName:"McLaughlin", email: "brett@Vevb.com" },
{ firstName: "Jason", lastName:"Hunter", email: "Vevb.com" },
{ firstName: "Elliotte", lastName:"Harold", emai": "elharo@Vevb.com" }
]}
{ people1: [
{ firstName: "Brett", lastName:"McLaughlin", email: "brett@Vevb.com" },
{ firstName: "Jason", lastName:"Hunter", email: "Vevb.com" },
{ firstName: "Elliotte", lastName:"Harold", emai": "elharo@Vevb.com" }
],
people2: [
{ firstName: "Brett", lastName:"McLaughlin", email: "brett@Vevb.com" },
{ firstName: "Jason", lastName:"Hunter", email: "Vevb.com" },
{ firstName: "Elliotte", lastName:"Harold", emai": "elharo@Vevb.com" }
],
people3: [
{ firstName: "Brett", lastName:"McLaughlin", email: "brett@Vevb.com" },
{ firstName: "Jason", lastName:"Hunter", email: "Vevb.com" },
{ firstName: "Elliotte", lastName:"Harold", emai": "elharo@Vevb.com" }
]
}

2.后臺傳輸進來的滿足JSON條件的文本格式化。
因為JSON最大的用途是AJAX應用，因此關鍵是怎樣把文本轉換成javascript對象，假設我們請求回的文本為data，那么我們如下解析：
代碼如下:
data=data.replace(//n | /r/g,"");
var obj=eval('('+data+')');

因為我們后臺輸出的時候會把空格和回車符也輸出，因此這里要用正則替換掉，然后用eval轉換成對象就可以調用了。