json对象遍历输出key和value

js遍历json对象
原生js遍历json对象

遍历json对象:

无规律:

<11script>

var json = [

  {dd:'SB',AA:'东东',re1:123},

  {cccc:'dd',lk:'1qw'}

];

for(var i=0,l=json.length;i<l;i++){

  for(var key in json[i]){

    alert(key+':'+json[i][key]);

  }

}

</script>

有规律:

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packJson = [

{"name":"nikita", "password":"1111"},

{"name":"tony", "password":"2222"}

];

for(var p in packJson){//遍历json数组时,这么写p为索引,0,1

alert(packJson[p].name + " " + packJson[p].password);

}
也可以用这个:

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for(var i = 0; i < packJson.length; i++){

alert(packJson[i].name + " " + packJson[i].password);

}
遍历json对象

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myJson = {"name":"caibaojian", "password":"1111"};

for(var p in myJson){//遍历json对象的每个key/value对,p为key

alert(p + " " + myJson[p]);

}
有如下 json对象:

var obj ={"name":"冯娟","password":"123456","department":"技术部","sex":"女","old":30};

遍历方法:

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for(var p in obj){
str = str+obj[p]+',';
return str;
}

posted @ 2018-12-07 12:36  iseaside  阅读(12062)  评论(0编辑  收藏  举报