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【JSTREE】 jstree-初始化时默认选中根节点
var contacttree = $(‘#contact-org‘).jstree({ "core" : { "animation" : false, "multiple" : false, "check_callback" : true, "themes" : { "icons" : true, "dots" : false }, "data" : { "dataType": ‘json‘, "url":function(node){ return node.id==="#" ? ctxPath + "/v-contact?queryOrg":ctxPath + "/v-contact?queryOrg"; }, "data":function(node){ return {"id" : node.id}; } } }).on(‘loaded.jstree‘, function(e, data){ var inst = data.instance; var obj = inst.get_node(e.target.firstChild.firstChild.lastChild); inst.select_node(obj); });
通过 loaded.jstree 这个动作,当tree加载完毕时,获取树的根节点对象;
调用select_node方法,选择根节点。
进阶:
赋上get_node的说明(可以传入ID来获取节点,但是上述情况的话,必须得知道哪个是根节点):
get_node();
$("#demo")
.bind("loaded.jstree", function (e, data) {
data.inst.open_all(-1); // -1 opens all nodes in the container
})
.jstree({
// 你的jstree的设置
})
public Object Menu(String roleId, HttpServletRequest req) { List<SysMenu> list = menuService.query(Cnd.orderBy().asc("location").asc("path")); List<SysMenu> datas = roleService.getDatas(); List<NutMap> menus = new ArrayList<>(); List<SysMenu> roleMenus = roleService.getMenusAndButtons(roleId);//当前角色的权限 for (SysMenu menu : list) { NutMap map = new NutMap(); for (SysMenu bt : datas) { if (menu.getPath().equals(bt.getPath().substring(0, bt.getPath().length() - 4))) { menu.setHasChildren(true); break; } } for(SysMenu rm:roleMenus){ if (menu.getId().equals(rm.getId())){ map.put("state", new State(false,false,true));//是否允许编辑-是否展开-是否选中树节点 break; } } map.put("id", menu.getId()); map.put("text", menu.getName()); map.put("icon", Strings.sBlank(menu.getIcon())); map.put("parent", "".equals(Strings.sNull(menu.getParentId())) ? "#" : menu.getParentId()); map.put("data", menu.getHref()); menus.add(map); } req.setAttribute("menus", Json.toJson(menus)); return Strings.isBlank(roleId) ? null : roleService.fetch(roleId); } public class State { private boolean disabled; private boolean opened; private boolean selected; /** * 树节点勾选 * @param disabled 编辑 * @param opened 是否展开 * @param selected 是否选中 */ public State(boolean disabled,boolean opened,boolean selected){ this.disabled=disabled; this.opened=opened; this.selected=selected; } public boolean isDisabled() { return disabled; } public void setDisabled(boolean disabled) { this.disabled = disabled; } public boolean isOpened() { return opened; } public void setOpened(boolean opened) { this.opened = opened; } public boolean isSelected() { return selected; } public void setSelected(boolean selected) { this.selected = selected; } } <header class="header navbar bg-white shadow"> </header> <div class="content-wrap"> <div class="wrapper"> <div class="row mb15"> <div class="col-lg-12"> <form id="addRoleForm" class="form-horizontal stepy" method="post" action="url"> <input type="hidden" id="menuIds" name="menuIds"/> <div class="form-group no-b"> <div class="col-s-m-8"> <div class="panel"> <div class="panel-heading no-b"> <h5>选择<b>菜单</b></h5> </div> <div class="panel-body"> <div id="jsTreeMenu"></div> </div> </div> </div> <div class="col-s-m-4"> <div class="panel"> <div class="panel-heading no-b"> <h5>菜单<b>描述</b></h5> </div> <div id="menuDescript" class="panel-body"> <div class=‘alert alert-info‘>请勾选每一个需要分配的菜单</div> </div> </div> </div> </div> </form> </div> </div> </div> </div> <script language="JavaScript"> var jsTreeMenu; $(function () { jsTreeMenu = $("#jsTreeMenu").jstree({ plugins: ["wholerow", "checkbox"], core: { data: ${menus!} }, checkbox: { three_state: false, cascade: ‘down‘ } }).on("hover_node.jstree", function (e, data) { if (data.node.data) $("#menuDescript").text(data.node.data); }).on("dehover_node.jstree", function (e, data) { $("#menuDescript").html("<div class=‘alert alert-info‘>请勾选每一个需要分配的菜单</div>");//清空菜单描述 }).bind("loaded.jstree", function (e, data) { //立即加载树下所有节点 }); }); function each(node, tree, nodes) { var p = tree.get_parent(node); if (p.length > 1) { if (nodes&&p&&nodes.indexOf(p)<0) nodes.push(p); each(p, tree, nodes); } } function complete() { var tree = $.jstree.reference("#jsTreeMenu"); var ids = tree.get_selected(); //查询所选节点的所有父节点 for (var i = 0; i < ids.length; i++) { var node = ids[i]; each(node, tree, ids); } if (ids.length > 0) { $.post("url", {menuIds: ids.toString(), roleid: ‘${obj.id}‘}, function (data) { if (data.code == 0) { Toast.success(data.msg); setTimeout(function () { $("#goback").trigger("click"); }, 1000); } else { Toast.error(data.msg); } }, "json"); } else { Toast.warning("请先选择菜单!"); } } </script> <%}%>
$(function () { $.ajaxSetup({cache:false}); $("#tree").tree({ data : { type : "json", async : true, opts : { async : true, method : "GET", //向后台发送请求的url或json格式的数据文件 url : "json_data.json" } }, root : { attributes : { "id" : "0" }, data : "ROOT", state : "closed"}, lang:{ loading:"目录加载中……" }, ui:{ theme_name:‘checkbox‘ }, callback : { // Make sure static is not used once the tree has loaded for the first time onl oad : function (t) { t.settings.data.opts.static = false; }, beforedata : function (n, t) { if (n == false) t.settings.data.opts.static = t.settings.root; else return {parent_Id : $(n).attr("id") } }, //checkbox树展开之后,设置节点为选中状态 onopen_all : function() { var selectedIds = []; for (var i = 0; i < selectedIds.length; i++) { jQuery.tree.plugins.checkbox.check($("#"+ selectedIds[i]+"")); } } }, plugins:{ checkbox:{} } }); });
在树return data的时候,对该data先进行处理,追加open和check
// Alternative format of the node (id & parent are required)
{
id : "string" // required
parent : "string" // required
text : "string" // node text
icon : "string" // string for custom
state : {
opened : boolean // is the node open
disabled : boolean // is the node disabled
selected : boolean // is the node selected
},
li_attr : {} // attributes for the generated LI node
a_attr : {} // attributes for the generated A node
}
【JSTREE】 jstree-初始化时默认选中根节点
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