Bootstrap 树控件使用经验分享(图文解说)(5)

3.2 默认隐藏,触发某个事件的时候出现树。这种场景在项目里面非常常见,一般用于选择树节点。所以博主把这个也单独拿出来说下吧。

div默认是隐藏的。

    <input type="text" class="form-control" id="txt_ztree" placeholder="点击文本框出现ztree" onclick="showMenu()" />
  <div id="menuContent2" class="menuContent" style="display:none;position: absolute;width:95%;border:1px solid rgb(170,170,170);z-index:10;">
  <ul id="treeDemo2" class="ztree" style="margin-top:0; width:160px; height:auto;"></ul>
  </div>

在js里面初始化树以及注册showMenu()方法

var setting2 = {
 check: {
 enable: true,
 chkStyle: "radio",
 radioType: "all"
 },
 view: {
 dblClickExpand: false
 },
 data: {
 simpleData: {
  enable: true
 }
 },
 callback: {
 onClick: onClickNode,
 onCheck: onCheck
 }
};
var zNodes = [
 { id: 1, pId: 0, name: "父节点1", open: true },
 { id: 11, pId: 1, name: "父节点11" },
 { id: 111, pId: 11, name: "叶子节点111" },
 { id: 112, pId: 11, name: "叶子节点112" },
 { id: 113, pId: 11, name: "叶子节点113" },
 { id: 114, pId: 11, name: "叶子节点114" },
 { id: 12, pId: 1, name: "父节点12" },
 { id: 121, pId: 12, name: "叶子节点121" },
 { id: 122, pId: 12, name: "叶子节点122" },
 { id: 123, pId: 12, name: "叶子节点123" },
 { id: 124, pId: 12, name: "叶子节点124" },
 { id: 13, pId: 1, name: "父节点13", isParent: true },
 { id: 2, pId: 0, name: "父节点2" },
 { id: 21, pId: 2, name: "父节点21", open: true },
 { id: 211, pId: 21, name: "叶子节点211" },
 { id: 212, pId: 21, name: "叶子节点212" },
 { id: 213, pId: 21, name: "叶子节点213" },
 { id: 214, pId: 21, name: "叶子节点214" },
 { id: 22, pId: 2, name: "父节点22" },
 { id: 221, pId: 22, name: "叶子节点221" },
 { id: 222, pId: 22, name: "叶子节点222" },
 { id: 223, pId: 22, name: "叶子节点223" },
 { id: 224, pId: 22, name: "叶子节点224" },
 { id: 23, pId: 2, name: "父节点23" },
 { id: 231, pId: 23, name: "叶子节点231" },
 { id: 232, pId: 23, name: "叶子节点232" },
 { id: 233, pId: 23, name: "叶子节点233" },
 { id: 234, pId: 23, name: "叶子节点234" },
 { id: 3, pId: 0, name: "父节点3", isParent: true }
];
//初始化
$(document).ready(function () {
 $.fn.zTree.init($("#treeDemo2"), setting2, zNodes);
});
//显示菜单
function showMenu() {
 $("#menuContent2").css({ left: "15px", top: "34px" }).slideDown("fast");
 $("body").bind("mousedown", onBodyDown);
}
//隐藏菜单
function hideMenu() {
 $("#menuContent2").fadeOut("fast");
 $("body").unbind("mousedown", onBodyDown);
}
function onBodyDown(event) {
 if (!(event.target.id == "menuBtn" || event.target.id == "menuContent2" || event.target.id == "txt_ztree" || $(event.target).parents("#menuContent2").length > 0)) {
 hideMenu();
 }
}
//节点点击事件
function onClickNode(e, treeId, treeNode) {
 var zTree = $.fn.zTree.getZTreeObj("treeDemo");
 zTree.checkNode(treeNode, !treeNode.checked, null, true);
 return false;
}
//节点选择事件
function onCheck(e, treeId, treeNode) {
 var zTree = $.fn.zTree.getZTreeObj("treeDemo"),
 nodes = zTree.getCheckedNodes(true),
 v = "";
 var parentid = "";
 var parentlevel = "";
 for (var i = 0, l = nodes.length; i < l; i++) {
 v += nodes[i].name + ",";
 parentid += nodes[i].id + ",";
 parentlevel += nodes[i].menu_level + ",";
 }
 if (v.length > 0) {
 v = v.substring(0, v.length - 1);
 parentid = parentid.substring(0, parentid.length - 1);
 parentlevel = parentlevel.substring(0, parentlevel.length - 1);
 }
 else {
 return;
 }
 hideMenu();
}
      

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