Ext实现waiting提示功能

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<pre name="code" class="html"><html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"><title>Ext实现waiting提示功能</title><link rel="stylesheet" type="text/css" href="./ext-2.0.2/resources/css/ext-all.css"/><script src="./ext-2.0.2/adapter/ext/ext-base.js"></script><script src="./ext-2.0.2/ext-all.js"></script><script>Ext.onReady(function(){Ext.BLANK_IMAGE_URL="./ext-2.0.2/resources/images/default/s.gif";});var showWaiting = function(){var msgbox = Ext.MessageBox.show({title: '提示',msg: "正在删除记录，请稍侯...",modal: true,width: 300});var runner = new Ext.util.TaskRunner();//定义多线程var delTask ={run:function(){        //执行删除记录，这里是特意的阻塞来观察效果        Ext.Msg.alert('删除','正在执行删除操作……',function(){//删除完成  runner.stop(delTask);          msgbox.hide();          return;        });},interval: 10}runner.start(delTask);}</script></head><body><h1>Ext实现waiting提示功能</h1><button onclick="showWaiting(1);">waiting</button></body></html>

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