Remove a node
Use removeNode() method of zTree v3.x can trigger 'beforeRemove / onRemove' callback function. for reduce redundant code.
Please use zTree object to executing the method.
JSON data object of the node to be removed.
Please ensure that this data object is an internal node data object in zTree.
callbackFlag = true means: call this method, will trigger 'beforeRemove' & 'onRemove' callback.
callbackFlag = false means: call this method, will not trigger callback.
If this parameter is omitted, it is same as 'callbackFlag = false'
no return value
var treeObj = $.fn.zTree.getZTreeObj("tree");
var nodes = treeObj.getSelectedNodes();
for (var i=0, l=nodes.length; i < l; i++) {
treeObj.removeNode(nodes[i]);
}