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
*
*$("selector").print_r_json(json,opts) : return formatted string (and print)
*sprint_r_json : just return the string;
*print_r_json : return the formatted string and print json data
*contribute 明河
*
*auth iorichina
*
*example:
*3 ways to use it
*<script language="javascript">
*$("selector").print_r_json({"a":"aa","d":{"ef":{"a":"d","d":["a","b"]},"ed":"dd"},"g":"g"},{if_print:true,return_array:true});
*document.write($.sprint_r_json({"a":"aa","d":{"ef":{"a":"d","d":["a","b"]},"ed":"dd"},"g":"g"}));
*$.print_r_json({"a":"aa","d":{"ef":{"a":"d","d":["a","b"]},"ed":"dd"},"g":"g"});
*</script>
*
*/
$.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('<div style="font-weight:bold">'+(opts.return_array?'Array':'JSON-DATA')+'</div>'+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
};
$.extend({
print_r_json : function(json)
{
if(typeof(json)=="object")
{
var text='<div style="font-weight:bold;">{</div><div style="margin-left:25px;">';
document.write('<div style="font-weight:bold;">{</div><div style="margin-left:25px;">');
for(var p in json)
{
if(typeof(json[p])=="object")
{
document.write('<div>["'+p+'"] => ');
text+='<div>["'+p+'"] => '+$.print_r_json(json[p])+'</div>';
document.write('</div>');
}
else
{
text+='<div>['+((/^\d+$/).test(p)?p:('"'+p+'"'))+'] => "'+json[p]+'"</div>';
document.write('<div>['+p+'] => '+json[p]+'</div>');
}
}
text+='</div><div style="font-weight:bold;">}</div>';
document.write('</div><div style="font-weight:bold;">}</div>');
return (text);
}
else
{
document.write(json);
return (json);
}
},
sprint_r_json : function(json)
{
if(typeof(json)=="object")
{
var text = '<div style="font-weight:bold;">{</div><div style="margin-left:25px;">';
for(var p in json)
{
if(typeof(json[p])=="object")
{
text += '<div>["'+p+'"] => '+$.sprint_r_json(json[p])+'</div>';
}
else
{
text += '<div>['+((/^\d+$/).test(p)?p:('"'+p+'"'))+'] => "'+json[p]+'"</div>';
}
}
text += '</div><div style="font-weight:bold;">}</div>';
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。