1. ajax请求生成jsTree
var r = []; // 权限树中被选中的叶子节点
var currentGroupId;
function showPermitTree(id) {
currentGroupId = id;
$.ajax({
data : "currentGroupId=" + id,type : "POST",//dataType : 'json',url : "/test/permittree",error : function(data) {
alert("出错了！！:" + data);
},success : function(data) {
//alert("success:" + data);
createPermitTree(data);
}
});
${'buttonDiv'}.style.display="";
}
function createPermitTree(datastr) {
datastr = eval("" + datastr + "");
$('#permitTree').jstree({
'plugins' : [ "wholerow","checkBox","types" ],'core' : {
"themes" : {
"responsive" : false
},'data' : datastr
},"types" : {
"default" : {
"icon" : "fa fa-folder icon-state-warning icon-lg"
},"file" : {
"icon" : "fa fa-file icon-state-warning icon-lg"
}
}
});
}
// listen for event
$('#permitTree').on('changed.jstree',function(e,data) {
r = [];
var i,j;
for (i = 0,j = data.selected.length; i < j; i++) {
var node = data.instance.get_node(data.selected[i]);
if (data.instance.is_leaf(node)) {
r.push(node.id);
}
}
//alert('Selected: ' + r.join('@@'));
})
function saveTree() {
$.ajax({
data : {'currentGroupId' : currentGroupId,'selectedNodes' : r.join('@@')},url : "/test/savetree",success : function(data) {
alert("保存成功!");
}
});
}
直接把测试项目中一段代码copy过来了，这是一棵带复选框的树。页面有地方点击之后触发showPermitTree(id)函数，发送ajax请求给后台，项目使用的是springmvc框架，后台返回JSONArray.toString。
2. jsTree change事件
上面代码中含change事件。把所有选中的节点的id放到一个数组中。
页面上有个按钮，点击后触发saveTree函数，发请求给后台，把选中的节点的id发给后台。
3.jsTree自定义contextmenu
$('#jstree').jstree({
core : {
check_callback : true,data : [
{ "id" : "1","parent" : "#","text" : "root" },{ "id" : "2","parent" : "1","text" : "child 1" },{ "id" : "3","text" : "child 2" }
],},plugins : ["wholerow","contextmenu"],"contextmenu": {
"items": {
"create": null,"rename": null,"remove": null,"ccp": null,"add": {
"label": "add","action": function (obj) {
var inst = jQuery.jstree.reference(obj.reference);
var clickedNode = inst.get_node(obj.reference);
alert("add operation--clickedNode's id is:" + clickedNode.id);
}
},"delete": {
"label": "delete","action": function (obj) {
var inst = jQuery.jstree.reference(obj.reference);
var clickedNode = inst.get_node(obj.reference);
alert("delete operation--clickedNode's id is:" + clickedNode.id);
}
}
}
}
}).on("ready.jstree",function (e,data) {
data.instance.open_all();
});
这段代码使用jsTree的contextmenu plugin，去掉jsTree自带的菜单，并自定义菜单
