json树递归js查询json父子节点
上代码，直接另存为html打开，看console控制台就可以看到效果了
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>json-query</title>
<script type="text/javascript">
var json = [{
"MenuCode": "S0-3100-00",
"MenuAction": "TelPay",
"MenuName": "通讯费",
"subMenu": [{
"MenuCode": "S0-3100-01",
"MenuAction": "ChinaMobileTelBalQryInitAct",
"MenuName": "中国移动"
}, {
"MenuCode": "S0-3100-02",
"MenuAction": "UnicomTelBalQryInitAct",
"MenuName": "中国联通"
}, {
"MenuCode": "S0-3100-03",
"MenuAction": "TelecomTelBalQryInitAct",
"MenuName": "中国电信"
}]
}, {
"MenuCode": "S0-3200-00",
"MenuAction": "PowerPayInitAct",
"MenuName": "电费",
"subMenu": [{
"MenuCode": "S0-3210-00",
"MenuAction": "SmartPowerCardInitAct",
"MenuName": "智能电能表充值",
"subMenu": [{
"MenuCode": "S0-3210-01",
"MenuAction": "SmartPowerCardPayInitAct",
"MenuName": "购电卡充值"
}, {
"MenuCode": "S0-3210-02",
"MenuAction": "SmartPowerCardQueryInitAct",
"MenuName": "购电卡查询"
}, {
"MenuCode": "S0-3210-03",
"MenuAction": "SmartPowerCardRewriteInitAct",
"MenuName": "购电卡补写"
}]
}, {
"MenuCode": "S0-3220-00",
"MenuAction": "ElectricChargeInitAct",
"MenuName": "电能表无卡充值",
"subMenu": [{
"MenuCode": "S0-3220-01",
"MenuAction": "ElectricChargeQryInitAct",
"MenuName": "购电充值"
}, {
"MenuCode": "S0-3220-02",
"MenuAction": "ElectricChargeMsgRegInitAct",
"MenuName": "短信订阅"
}]
}]
}, {
"MenuCode": "S0-3300-00",
"MenuAction": "HeatingPayInitAct",
"MenuName": "取暖费",
"subMenu": [{
"MenuCode": "S0-3300-04",
"MenuAction": "JinNengHeatingQryInitAct",
"MenuName": "天津能源缴费"
}]
}, {
"MenuCode": "S0-3400-00",
"MenuAction": "CablePayInitAct",
"MenuName": "有线电视费",
"subMenu": [{
"MenuCode": "S0-3400-01",
"MenuAction": "GuangDianCableQryInitAct",
"MenuName": "广电有线缴费"
}, {
"MenuCode": "S0-3400-02",
"MenuAction": "TedaCableQryInitAct",
"MenuName": "泰达有线缴费"
}]
}, {
"MenuCode": "S0-3000-01",
"MenuAction": "ETCLoadInitAct",
"MenuName": "ETC卡充值"
}, {
"MenuCode": "S0-3500-00",
"MenuAction": "WaterPayInitAct",
"MenuName": "水费",
"subMenu": [{
"MenuCode": "S0-3500-01",
"MenuAction": "JinNanWaterQryInitAct",
"MenuName": "津南水费缴费"
}]
}, {
"MenuCode": "S0-3000-03",
"MenuAction": "GasPayInitAct",
"MenuName": "燃气费"
}, {
"MenuCode": "S0-3000-04",
"MenuAction": "CommonPayInitAct",
"MenuName": "通用缴费"
}, {
"MenuCode": "S0-3600-00",
"MenuAction": "CityCardInitAct",
"MenuName": "城市一卡通充值",
"subMenu": [{
"MenuCode": "S0-3600-01",
"MenuAction": "CityCardPayInitAct",
"MenuName": "城市卡充值"
}, {
"MenuCode": "S0-3600-02",
"MenuAction": "CityCardRewriteInitAct",
"MenuName": "城市卡补写卡"
}]
}, {
"MenuCode": "S0-3000-05",
"MenuAction": "SocialSecurityQryInitAct",
"MenuName": "社保缴费"
}];
</script>
<script type="text/javascript">
/**
* Author ： 落雨
* 递归查询JSON树 父子节点
*/
var parentNode = null;
var node = null;
/**
* 根据NodeID查找当前节点以及父节点
*
* @param {[type]}
* @param {[type]}
* @return {[type]}
*/
function getNode(json, nodeId) {
//1.第一层 root 深度遍历整个JSON
for (var i = 0; i < json.length; i++) {
if (node) {
break;
}
var obj = json[i];
//没有就下一个
if (!obj || !obj.MenuCode) {
continue;
}
//2.有节点就开始找，一直递归下去
if (obj.MenuCode == nodeId) {
//找到了与nodeId匹配的节点，结束递归
node = obj;
break;
} else {
//3.如果有子节点就开始找
if (obj.subMenu) {
//4.递归前，记录当前节点，作为parent 父亲
parentNode = obj;
//递归往下找
getNode(obj.subMenu, nodeId);
} else {
//跳出当前递归，返回上层递归
continue;
}
}
}
//5.如果木有找到父节点，置为null，因为没有父亲
if (!node) {
parentNode = null;
}
//6.返回结果obj
return {
parentNode: parentNode,
node: node
};
}
//批量查询
var query = [
'S0-3400-00', 'S0-3100-03', 'S0-3210-02', 'S0-3210-03', 'S0-3000-05', 'S0-3300-04'
];
//打印结果
for (var i = 0; i < query.length; i++) {
node = null;
parentNode = null;
var obj = getNode(json, query[i]);
console.log("查询nodeId:" + query[i] + ", 结果:" + obj.node.MenuCode + ",name:" + obj.node.MenuName + " -> 父级:" + (obj.parentNode ? obj.parentNode.MenuName : '木有父级!'));
}
</script>
</head>
<body>
</body>
</html>
js 递归查询 json 树 父子节点
落雨
2016-03-11 00:45:47
