## Function(treeId, treeNode)setting.callback.beforeRightClick

### Overview[ depends on jquery.ztree.core js ]

Used to capture the right click event before the 'onRightClick' callback, zTree based on return value to determine whether to trigger the 'onRightClick' callback.

Default: null

### Function Parameter Descriptions

#### treeIdString

zTree unique identifier: treeId, easy for users to control.

#### treeNodeJSON

JSON data object of the node which is mouse right clicked

If the DOM which mouse right clicked isn't a node, it will return null.

#### ReturnBoolean

return true or false

If return false, ztree will not trigger the 'onRightClick' callback, no effect on other operations.

### Examples of setting & function

#### 1. disable to trigger the 'onRightClick' callback

    function zTreeBeforeRightClick(treeId, treeNode) {
        return false;
    };
    var setting = {
    	callback: {
    		beforeRightClick: zTreeBeforeRightClick
    	}
    };
    ......