## Function(treeId, treeNode)setting.view.addHoverDom

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

Used to display custom control when mouse move over the node. (e.g. the rename and remove button)

If you use this function, so must set setting.view.removeHoverDom, please make sure that a better understanding of zTree before you use it.

Default: null

### Function Parameter Descriptions

#### treeIdString

zTree unique identifier: treeId.

#### treeNodeJSON

JSON data object of the node which need to display the custom control.

### Examples of setting & function

#### 1. Display a button when mouse move over the node, and hide the button when mouse move out.

    var setting = {
    	view: {
    		addHoverDom: addHoverDom,
    		removeHoverDom: removeHoverDom,
    		......
    	}
    };
    function addHoverDom(treeId, treeNode) {
    	var aObj = $("#" + treeNode.tId + "_a");
    	if ($("#diyBtn_"+treeNode.id).length>0) return;
    	var editStr = "<span id='diyBtn_space_" +treeNode.id+ "' > </span>"
    		+ "<button type='button' class='diyBtn1' id='diyBtn_" + treeNode.id
    		+ "' title='"+treeNode.name+"' onfocus='this.blur();'></button>";
    	aObj.append(editStr);
    	var btn = $("#diyBtn_"+treeNode.id);
    	if (btn) btn.bind("click", function(){alert("diy Button for " + treeNode.name);});
    };
    function removeHoverDom(treeId, treeNode) {
    	$("#diyBtn_"+treeNode.id).unbind().remove();
    	$("#diyBtn_space_" +treeNode.id).unbind().remove();
    };
    ......