JS对象与json字符串相互转换实现方法示例

var data = new Object();
var jsonData = JSON.stringify(data);

var jsonData = $.getJSON();
var data = $.parseJSON(jsonData);

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 === null ) {
  return data;
 }
 if ( typeof data === "string" ) {
  // Make sure leading/trailing whitespace is removed (IE can't handle it)
  data = jQuery.trim( data );
  if ( data ) {
   // Make sure the ining data is actual JSON
   // Logic borrowed from http://json./json2.js
   if ( rvalidchars.test( data.replace( rvalidescape, "@" )
    .replace( rvalidtokens, "]" )
    .replace( rvalidbraces, "")) ) {
    return ( new Function( "return " + data ) )();
   }
  }
 }
 jQuery.error( "Invalid JSON: " + data );
},