## Booleansetting.data.keep.parent

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

The parent node's lock, the parent node will lock 'isParent' attribute to true.

Default: false

### Boolean Format

true means: lock the parent node, and if remove all of the parent node's child nodes, its 'isParent' attribute still keep to be true..

false means: don't lock the parent node, and if remove all of the parent node's child nodes, its 'isParent' attribute will change to be false..

### Examples of setting

#### 1. lock the parent node

    var setting = {
    	data: {
    		keep: {
    			parent: true
    		}
    	}
    };
    ......