Js 怎么遍历json对象所有key及根据动态key获取值
Posted
tags:
篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了Js 怎么遍历json对象所有key及根据动态key获取值相关的知识，希望对你有一定的参考价值。
var obj = ;for(var k in obj)
//遍历对象，k即为key，obj[k]为当前k对应的值
console.log(obj[k]);
参考技术A
json是种常用数据传输格式，js怎么解析json格式的数据呢，请参阅下面的代码：
[html] view plain copy print?
<html>
<head>
<script type="text/javascript">
var data = '"return_code":0,"return_message":"success","data":"data":["id":"1","question":"公主令牌在哪交？","id":"2","question":"公主护使有什么用？","id":"3","question":"角斗场在哪？","id":"4","question":"北部断层在哪？","id":"5","question":"欢乐令有什么用？","id":"6","question":"令牌积分有什么用？","id":"7","question":"南部断层在哪？","id":"8","question":"大妖魔令牌交给谁？","id":"9","question":"神工坊在哪？","id":"10","question":"警戒妖珠有什么用？"]';
function ShowData()
var obj = eval("("+data+")");
alert("return_code:"+obj["return_code"]);
alert("return_message:"+obj["return_message"]);
alert("第一个问题id：" + obj["data"]["data"][0]["id"]);
alert("第一个内容id：" + obj["data"]["data"][0]["question"]);
</script>
</head>
<body onload="ShowData();">
"return_code":0,"return_message":"success","data":"data":["id":"1","question":"公主令牌在哪交？","id":"2","question":"公主护使有什么用？","id":"3","question":"角斗场在哪？","id":"4","question":"北部断层在哪？","id":"5","question":"欢乐令有什么用？","id":"6","question":"令牌积分有什么用？","id":"7","question":"南部断层在哪？","id":"8","question":"大妖魔令牌交给谁？","id":"9","question":"神工坊在哪？","id":"10","question":"警戒妖珠有什么用？"]
</body>
</html>
参考资料
json官网.json官网[引用时间2018-1-2]
js遍历json的key和value
遍历json对象：
无规律：
<script>
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：
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：
for(var i = 0; i < packJson.length; i++){
alert(packJson[i].name + " " + packJson[i].password);
}
遍历json对象
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： for(var p in obj){ str = str+obj[p]+’,‘; return str; }
原文连接：http://blog.csdn.net/q1054261752/article/details/51701532
以上是关于Js 怎么遍历json对象所有key及根据动态key获取值的主要内容，如果未能解决你的问题，请参考以下文章