Function(treeId, treeNode, clickFlag)setting.callback.beforeClick

Overview[ depends on jquery.ztree.core js ]

Before click callback, return false to prevent the 'onClick' callback.

Default: null

Function Parameter Descriptions

treeIdString

zTree unique identifier: treeId.

treeNodeJSON

JSON data object of the node which is clicked

clickFlagNumber

Node is selected or deselected state, please see table below for details

clickFlag	selectedMulti	autoCancelSelected && event.ctrlKey / metaKey	isSelected	operate for selected
1	true	false	false	node is selected (single)
1	true	false	true	node is selected (single)
2	true	true	false	node is selected (multi)
0	true	true	true	node is deselected
1	false	false	false	node is selected (single)
1	false	false	true	node is selected (single)
1	false	true	false	node is selected (single)
0	false	true	true	node is deselected

Return Boolean

return true or false

If return false, zTree will not change selected state, and will not trigger the 'onClick' callback.

Examples of setting & function

1. disabled to click the node

function myBeforeClick(treeId, treeNode, clickFlag) {
    return (treeNode.id !== 1);
};
var setting = {
	callback: {
		beforeClick: myBeforeClick
	}
};
......