点击combo激活下拉
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>04.form</title> <link rel="stylesheet" type="text/css" href="http://www.cnblogs.com/resources/css/ext-all.css" /> <script type="text/javascript" src="http://www.cnblogs.com/adapter/ext/ext-base.js"></script> <script type="text/javascript" src="http://www.cnblogs.com/ext-all.js"></script> <script type="text/javascript"> Ext.onReady(function(){ Ext.QuickTips.init(); var form = new Ext.form.FormPanel({ labelAlign: 'right', labelWidth: 50, width: 300, title: 'form', frame: true, items: [{ xtype:"combo", fieldLabel: '选择', name: 'combo', store: new Ext.data.SimpleStore({ fields: ['value', 'text'], data: [ ['value1', 'text1'], ['value2', 'text2'] ] }), displayField: 'text', valueField: 'value', mode: 'local', emptyText:'请选择', listeners:{ focus :{fn:function(e) { e.onTriggerClick(); },buffer:200} } }], buttons: [{ text: '保存' },{ text: '读取' },{ text: '取消' }] }); form.render("form"); }); </script> </head> <body> <script type="text/javascript" src="../examples.js"></script> <div id="form" style="margin:20px;"></div> </body> </html>