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关于json解析的几种方法

parse用于从一个字符串中解析出json对象,如 

var str = ‘{"name":"huangxiaojian","age":"23"}‘

注意:单引号写在{}外,每个属性名都必须用双引号,否则会抛出异常。

 

 

JSON.parse(jsonString): 在一个字符串中解析出JSON对象

var str = ‘[{"href":"baidu.com","text":"test","orgId":123,"dataType":"curry","activeClass":"haha"}]‘;
  
JSON.parse(str);
 结果
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2、JSON.stringify(obj) : 将一个JSON对象转换成字符串

var obj = [{"href":"baidu.com","text":"test","orgId":123,"dataType":"curry","activeClass":"haha"}];
  
JSON.stringify(obj);
 
结果
"[{"href":"baidu.com","text":"test","orgId":123,"dataType":"curry","activeClass":"haha"}]"

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3、jQuery.parseJSON(jsonString) : 将格式完好的JSON字符串转为与之对应的JavaScript对象

var str = ‘[{"href":"baidu.com","text":"test","orgId":123,"dataType":"curry","activeClass":"haha"}]‘;
  
jQuery.parseJSON(str);
结果
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4、JSON.parse()和jQuery.parseJSON()的区别:

有的浏览器不支持JSON.parse()方法,使用jQuery.parseJSON()方法时,在浏览器支持时会返回执行JSON.parse()方法的结果,否则会返回类似执行eval()方法的结果,以上结论参考jquery 1.9.1 得出:

parseJSON: function( data ) {
  // Attempt to parse using the native JSON parser first
  if ( window.JSON && window.JSON.parse ) {
    return window.JSON.parse( data );
  }
  
  
  if ( data =http://www.mamicode.com/== null ) {
    return data;
  }
  
  
  if ( typeof data =http://www.mamicode.com/== "string" ) {
  
  
    // Make sure leading/trailing whitespace is removed (IE can‘t handle it)
    data = http://www.mamicode.com/jQuery.trim( data );
  
  
    if ( data ) {
      // Make sure the incoming data is actual JSON
      // Logic borrowed from http://json.org/json2.js
      if ( rvalidchars.test( data.replace( rvalidescape, "@" )
        .replace( rvalidtokens, "]" )
        .replace( rvalidbraces, "")) ) {
  
  
        return ( new Function( "return " + data ) )();
      }
    }
  }
  
  
  jQuery.error( "Invalid JSON: " + data );
},

 

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关于json解析的几种方法