在JS中我们可以直接定义一个对象：

复制代码 代码如下:

var obj={name:"蓝色",age:10};

上面其实就是所谓的JSON了，我引用下别人的复杂点的例子：

复制代码 代码如下:

{ firstName: "Brett", lastName:"McLaughlin", email: "brett@jb51.net" }

复制代码 代码如下:

{ people: [

{ firstName: "Brett", lastName:"McLaughlin", email: "brett@jb51.net" },

{ firstName: "Jason", lastName:"Hunter", email: "jb51.net" },

{ firstName: "Elliotte", lastName:"Harold", emai": "elharo@jb51.net" }

]}

{ people1: [

{ firstName: "Brett", lastName:"McLaughlin", email: "brett@jb51.net" },

{ firstName: "Jason", lastName:"Hunter", email: "jb51.net" },

{ firstName: "Elliotte", lastName:"Harold", emai": "elharo@jb51.net" }

],

people2: [

{ firstName: "Brett", lastName:"McLaughlin", email: "brett@jb51.net" },

{ firstName: "Jason", lastName:"Hunter", email: "jb51.net" },

{ firstName: "Elliotte", lastName:"Harold", emai": "elharo@jb51.net" }

],

people3: [

{ firstName: "Brett", lastName:"McLaughlin", email: "brett@jb51.net" },

{ firstName: "Jason", lastName:"Hunter", email: "jb51.net" },

{ firstName: "Elliotte", lastName:"Harold", emai": "elharo@jb51.net" }

]

}

2.后台传输进来的满足JSON条件的文本格式化。

因为JSON最大的用途是AJAX应用，因此关键是怎样把文本转换成javascript对象，假设我们请求回的文本为data，那么我们如下解析：

复制代码 代码如下:

data=data.replace(/n | r/g,"");

var obj=eval('('+data+')');

因为我们后台输出的时候会把空格和回车符也输出，因此这里要用正则替换掉，然后用eval转换成对象就可以调用了。