JS去重json数据（大婶快来）

Question

本帖最后由 san13219091 于 2014-03-22 11:46:09 编辑

Answer 1

var $a ={                                                      
    "total":3,                                                      
    "rows":[                                                          
        {"code":"001","name":"北京市","qymc":"雪花啤酒","pfkmc":"雪花排气口1#"},         
        {"code":"002","name":"北京市","qymc":"雪花啤酒","pfkmc":"雪花排气口2#"},         
        {"code":"003","name":"上海市","qymc":"雪花啤酒","pfkmc":"雪花排气口2#"}
    ]                                                          
}

$b = {"total":0,"rows":[]};
var tem = $a.rows;
var len = tem.length;
var i=0;
var arr = [];
for(; i<len; i++){
var t = tem[i];
if(arr.indexOf(t['name']) ==-1){
arr.push(t['name']);
$b.rows.push(t);
$b.total++;
}

}

var newarr = $b;

Answer 2

var a={                                                      
    "total":3,                                                      
    "rows":[                                                          
        {"code":"001","name":"北京市","qymc":"雪花啤酒","pfkmc":"雪花排气口1#"},         
        {"code":"002","name":"北京市","qymc":"雪花啤酒","pfkmc":"雪花排气口2#"},         
        {"code":"003","name":"上海市","qymc":"雪花啤酒","pfkmc":"雪花排气口2#"}
    ]                                                          
}
var x=[];
var d=a.rows;
var k=0;
for(var i=0,len=d.length;i<len;i++){
if(!x[d[i].name]){
k++;
}
x[d[i].name]=d[i];
}
var m=[];
for(var i in x){
m.push(x[i]);
}
var b={
'total':k,
'rows':m
}
alert(JSON.stringify(b));

Answer 3

var json = {                                                      
"total":3,                                                      
"rows":[                                                          
{"code":"001","name":"北京市","qymc":"雪花啤酒","pfkmc":"雪花排气口1#"},         
{"code":"002","name":"北京市","qymc":"雪花啤酒","pfkmc":"雪花排气口2#"},         
{"code":"003","name":"上海市","qymc":"雪花啤酒","pfkmc":"雪花排气口2#"}
]                                                          
}; function fixJson(arr){
var _arr = [];
var table = {};

for(var i=0; i<arr.length; i++){
if(!table[arr[i].name])
table[arr[i].name] = arr[i];
} for(var o in table)
_arr.push(table[o]);

return _arr;
} json.rows = fixJson(json.rows);