treeNodeJSON

JSON data object of the node which need to be checked or unchecked.

Please ensure that this data object is an internal node data object in zTree.

checkedBoolean

checked = true means: check node.

checked = false means: uncheck node.

If this parameter is omitted, then toggle check or uncheck depend this node's expanded state.

Don't affect the node which 'nochecked' attribute is true.

checkTypeFlagBoolean

checkTypeFlag = true means: According to 'setting.check.chkboxType' attribute automatically check or uncheck the parent and child nodes.

checkTypeFlag = false means: only check or uncheck this node, don't affect its parent and child nodes.

When checkTypeFlag = false and treeNode.checked = checked, will not trigger callback function.

Don't affect the parent and child nodes which 'nochecked' attribute is true.

callbackFlagBoolean

callbackFlag = true means: call this method, will trigger 'beforeCheck' & 'onCheck' callback.

callbackFlag = false means: call this method, will not trigger callback.

If this parameter is omitted, it is same as 'callbackFlag = false'

Return none

no return value

var treeObj = $.fn.zTree.getZTreeObj("tree");
var nodes = treeObj.getSelectedNodes();
for (var i=0, l=nodes.length; i < l; i++) {
	treeObj.checkNode(nodes[i], true, true);
}