## Boolean / Function(treeId, treeNode)setting.view.dblClickExpand

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

When double-click the parent node, 'dblClickExpand' is used to decide whether to expand the parent node.

Default: true

### Boolean Format

true means: When double-click the parent node, zTree will expand the parent node.

false means: When double-click the parent node, zTree will not expand the parent node.

### Function Pamameter Descriptions

#### treeId String

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

#### treeNode JSON

JSON data object of the node which be double-clicked.

#### Return Boolean

Return value is same as 'Boolean Format'

### Example of setting

#### 1. When double-click the parent node, zTree will not expand the parent node.

    var setting = {
    	view: {
    		dblClickExpand: false
    	}
    };
    ......

#### 2. When double-click the parent node, zTree will expand the parent node which level>0.

    function dblClickExpand(treeId, treeNode) {
    	return treeNode.level > 0;
    };
    var setting = {
    	view: {
    		dblClickExpand: dblClickExpand
    	}
    };
    ......