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  • 数组层级叠加

    <select class="select" id="select">
        
    </select>
    var arr = [
            {
                clevel:"1",
                id:"10",
                name:"公司",
                pId:"0"
            },
            {
                clevel:"2",
                id:"10-100",
                name:"测试部",
                pId:"10"
            },
            {
                clevel:"3",
                id:"10-100-100",
                name:"测试一部",
                pId:"10-100"
            },
            {
                clevel:"4",
                id:"10-100-100-100",
                name:"测试一部分部一",
                pId:"10-100-100"
            },
            {
                clevel:"3",
                id:"10-100-101",
                name:"测试二部",
                pId:"10-100"
            },
            {
                clevel:"4",
                id:"10-100-101-100",
                name:"测试二部分部一",
                pId:"10-100-101"
            },
            {
                clevel:"2",
                id:"10-101",
                name:"人事部",
                pId:"10"
            },
            {
                clevel:"2",
                id:"10-102",
                name:"综合部",
                pId:"10"
            },
            {
                clevel:"2",
                id:"10-103",
                name:"国库部",
                pId:"10"
            },
            {
                clevel:"2",
                id:"10-104",
                name:"支付部",
                pId:"10"
            },
            {
                clevel:"2",
                id:"10-106",
                name:"机关部",
                pId:"10"
            }
        ]
    
        var select = document.getElementById('select');
    
        var opHtml = '';
        opHtml += "<option value ='0'>请选择</option>";
    
        var map = {};
    
        for (var i = 0; i < arr.length; i++) {
            var item = {
                pid: arr[i].pId,
                id: arr[i].id,
                name: arr[i].name
            };
            
            map[arr[i].id] = item;
    
            var index = item;
            var name = index.name;
    
    
            while (map[index.pid] != null) {
                index = map[index.pid];
                name = index.name + "-" + name;
            }
            
            opHtml += "<option name='" + arr[i].name + "' value=1>" + name + "</option>";
    
        }
    
        select.innerHTML = opHtml;
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  • 原文地址:https://www.cnblogs.com/zard23/p/9638668.html
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