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){
原生js和js的区别
str = str+obj[p]+',';
return str;
}

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