jQuery树形下拉菜单插件ztree，输入框选择树形菜单内容案例

1.引入css

rel="stylesheet" href="../../resources/js/plugins/ztree3.5/css/metroStyle/metroStyle.css">

2.引入js

3.绑定id

class="ztree-dropdown">
    class="custom-input" id="partInput" type="text" readonly value="请选择主分部分项" style="width:120px;"/>
    
id="ztreeDropdownContent" class="ztree-dropdown-content" >
        
id="partTree" class="ztree">
    

4.配置加载

var setting = {
    view: {
        showLine: false,
        showIcon:false,
        dblClickExpand: false,
        addHoverDom: addHoverDom,
        removeHoverDom: removeHoverDom
    },
    data: {
        simpleData: {
            enable: true
        }
    },
    callback: {
        beforeClick: beforeClick,
        onClick: onClick
    }
};

var zNodes =[
    {id:1, pId:0, name:"北京"},
    {id:2, pId:0, name:"天津"},
    {id:3, pId:0, name:"上海"},
    {id:6, pId:0, name:"重庆"},
    {id:4, pId:0, name:"河北省", open:true},
    {id:41, pId:4, name:"石家庄"},
    {id:42, pId:4, name:"保定"},
    {id:43, pId:4, name:"邯郸"},
    {id:44, pId:4, name:"承德"},
    {id:5, pId:0, name:"广东省", open:true},
    {id:51, pId:5, name:"广州"},
    {id:52, pId:5, name:"深圳"},
    {id:53, pId:5, name:"东莞"},
    {id:54, pId:5, name:"佛山"},
    {id:6, pId:0, name:"福建省", open:true},
    {id:61, pId:6, name:"福州"},
    {id:62, pId:6, name:"厦门"},
    {id:63, pId:6, name:"泉州"},
    {id:64, pId:6, name:"三明"}
];

function addHoverDom(treeId, treeNode) {
    $("#" + treeNode.tId).addClass("hover");
};
function removeHoverDom(treeId, treeNode) {
    $("#" + treeNode.tId).removeClass("hover");
};
function beforeClick(treeId, treeNode) {
    var check = (treeNode && !treeNode.isParent);
    if (!check) alert("只能选择城市...");
    return check;
}

function onClick(e, treeId, treeNode) {
    var zTree = $.fn.zTree.getZTreeObj("partTree"),
        nodes = zTree.getSelectedNodes(),
        v = "";
    nodes.sort(function compare(a,b){return a.id-b.id;});
    for (var i=0, l=nodes.length; i; i++) {
        v += nodes[i].name + ",";
    }
    if (v.length > 0 ) v = v.substring(0, v.length-1);
    var cityObj = $("#partInput");
    cityObj.attr("value", v);
}

function showMenu() {
    $("#ztreeDropdownContent").slideDown("fast");
    $("body").bind("mousedown", onBodyDown);
}
function hideMenu() {
    $("#ztreeDropdownContent").fadeOut("fast");
    $("body").unbind("mousedown", onBodyDown);
}
function onBodyDown(event) {
    if (!(event.target.id == "partInput" || event.target.id == "ztreeDropdownContent" || $(event.target).parents("#ztreeDropdownContent").length>0)) {
        hideMenu();
    }
}
$.fn.zTree.init($("#partTree"), setting, zNodes);
$("#partInput").focus(function(){
    showMenu();
});

附图：