本文实例讲述了jquery处理json数据返回数组和输出的方法。分享给大家供大家参考。具体实现方法如下：
复制代码 代码如下:
/*print the json object
 *
 *$(selector).print_r_json(json,opts) : return formatted string (and print)
 *sprint_r_json : just return the string;
 *print_r_json : return the formatted string and print json data
 *contribute 明河
 *
 *auth iorichina
 *
 *example:
 *3 ways to use it
 *
 *
*/
$.fn.print_r_json = function(json,options){
    if(typeof(json)!=object) return false;
    var opts = $.extend({},$.fn.print_r_json.defaults,options);
    var data = '';
    if(opts.if_print)
    {
        data = $.sprint_r_json(json)
        $(this).html(''+(opts.return_array?'array':'json-data')+'
'+data);
    }
    if(opts.array)
    {
        return $.json_to_array(json);
    }
    return data;
};
$.fn.print_r_json.defaults =
{
    if_print : false,//if print or just return formatted string
    return_array : true //return an array
};
$.extend({
    print_r_json : function(json)
    {
        if(typeof(json)==object)
        {
            var text='{
';
          document.write('{
');
          for(var p in json)
          {
            if(typeof(json[p])==object)
            {
              document.write('['+p+'] => ');
                text+='['+p+'] => '+$.print_r_json(json[p])+'
';
              document.write('
');
            }
            else
            {
                text+='['+((/^\d+$/).test(p)?p:(''+p+''))+'] => '+json[p]+'
';
              document.write('['+p+'] => '+json[p]+'
');
            }
          } 
          text+='
}
';
          document.write('
}
');
          return (text);
        }
        else
        {
            document.write(json);
            return (json);
        }
    },
    sprint_r_json : function(json)
    {
        if(typeof(json)==object)
        {
          var text = '{
';
          for(var p in json)
          {
            if(typeof(json[p])==object)
            {
              text += '['+p+'] => '+$.sprint_r_json(json[p])+'
';
            }
            else
            {
              text += '['+((/^\d+$/).test(p)?p:(''+p+''))+'] => '+json[p]+'
';
            }
          } 
          text += '
}
';
          return (text);
        }
        else
        {
            return (json);
        }
    },
    json_to_array : function(json)
    {
        if(typeof(json)==object)
        {
          var text = new array();
          for(var p in json)
          {
            if(typeof(json[p])==object)
            {
              text[p] = $.json_to_array(json[p]);
            }
            else
            {
              text[p] = json[p];
            }
          }
          return (text);
        }
        else
        {
            return (json);
        }
    }
});
希望本文所述对大家的jquery程序设计有所帮助。