遍历json对象:
无规律:
有规律:
遍历json对象
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:
数组对象的遍历:
下面我们对照一下js和jquer的遍历方法:
原文网址: https://www.cnblogs.com/qingqingzou-143/p/7079725.html
var jsondata = yourdatafor(var x in jsondata){
document.write(x+"="+jsondata[x])
}
如果是jsonarray就外面套一层for即可
var jsonarray =yourarray
for(var i =0i<jsonarray.lengthi++){
var jsonobj = jsonarray[i]
for(var x in jsonobj){
document.write(x+"="+jsonobj[x])
}
}
<html><head>
<meta http-equiv="Content-Type" content="text/htmlcharset=gbk"/>
<script type="text/javascript">
var smsTypeDesc = {"4":"回访短信","3":"邮件短信","aa":"测试短信"}
function EnumaKey(){
for(var key in smsTypeDesc){
alert(key)
}
}
function GetVal(){
var key = prompt("请输入要查询的key","4")
if("undefined"==typeof(smsTypeDesc)) return
if("undefined"==typeof(smsTypeDesc[key])){
alert("输入的key:"+key+", 在json对象中不存在!")
return
}
alert("您输入的key是:"+key + ",该key所对应的值是:"+smsTypeDesc[key])
}
function GetValByKey(){
alert(smsTypeDesc.aa)
}
</script>
</head>
<body>
Json对象:<br/>
<pre>
var smsTypeDesc = {"4":"回访短信","3":"邮件短信","aa":"测试短信"}
</pre>
<input type="button" onclick="EnumaKey()" value="遍历smsTypeDesc所有key"/>
<input type="button" onclick="GetVal()" value="获取smsTypeDesc动态指定key的值"/>
<input type="button" onclick="GetValByKey()" value="获取smsTypeDesc key aa 所对应的值"/>
</body>
</html>