以下是源码，点击menu here的时候也是仅仅出现一个小条
<%@ page language="java" contentType="text/html;charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<title>extjs测试</title>
<meta http-equiv="pragma" content="no-cache" />
<meta http-equiv="cache-control" content="no-cache"/>
<meta http-equiv="expires" content="0" />
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<link rel="stylesheet" type="text/css" href="css/ext-all.css" />
<link rel="stylesheet" type="text/css" href="css/myStyle.css" />
<link rel="stylesheet" type="text/css" href="css/icons.css" />
<link rel="stylesheet" type="text/css" href="css/examples.css" />
<link rel="stylesheet" type="text/css" href="css/column-tree.css" />
<link rel="stylesheet" type="text/css" href="css/Spinner.css" />
<link rel="stylesheet" type="text/css" href="css/fileuploadfield.css" />
<script type="text/javascript" src="js/ext-base.js"></script>
<script type="text/javascript" src="js/ext-all.js"></script>
<script type="text/javascript" src="js/ext-lang-zh_CN.js"></script>
<script type="text/javascript">
Ext.onReady(function(){
Ext.BLANK_IMAGE_URL = "../ext/resources/images/default/s.gif";
var loader = new Ext.tree.TreeLoader({dataUrl: 'abc.txt'});
loader.processResponse = function(response, node, callback){
var json = response.responseText;
try {
var json = eval("("+json+")");
node.beginUpdate();
var o = json["root"];
for(var i = 0, len = o.length; i < len; i++){
var n = this.createNode(o[i]);
if(n){
node.appendChild(n);
}
}
node.endUpdate();
if(typeof callback == "function"){
callback(this, node);
}
}catch(e){
this.handleFailure(response);
}
};
var testMenu = new Ext.menu.Menu({//菜单容器
minWidth:300,
maxHeight:500,
enableScrolling : true,
item:[{
id:'1',
icon:"icon-info.gif",
text:'有本事点我',
handler:function(){
Ext.MessageBox.alert("","啊！我被击中了！");
}},"-",{
text:'有本事点我',
icon:"icon-info.gif",
handler:function(){
Ext.MessageBox.alert("","啊！我被击中了！");
}}]
});
var tree = new Ext.tree.TreePanel({
el: 'tree',
loader: loader
});
var root = new Ext.tree.AsyncTreeNode({text:'我是根'});
tree.on("contextmenu",function(node,e){//contextmenu是右键菜单事件
e.preventDefault();//用来防止浏览器弹出它默认的功能菜单
e.stopEvent();
node.select();//当前节点处于选中状态
testMenu.showAt(e.getXY());
});
tree.setRootNode(root);
tree.render();
root.expand();
var el = Ext.get("test_menu");
el.on("click",function(e){
//menu.showAt(e.getXY());//作用于该位置
testMenu.show(this);//作用于元素上
//e.getXY();//得到事件触发的坐标
}) ;
});
</script>
</head>
<body>
<div id='tree' style="height:60"></div>
<div id="test_menu" style="height:60">menu here</div>
</body>
