使用ExtJS禁止刷新页面

来源：互联网发布：阿里云如何搭建ssr 编辑：程序博客网时间：2024/06/05 04:40

Ext.onReady(function(){                  Ext.WindowMgr.zseed = 10000;              Ext.QuickTips.init();                              Ext.getDoc().on("contextmenu", function(e){                     e.stopEvent();                 });                             if(document.addEventListener){                  document.addEventListener("keydown",maskBackspace, true);              }else{                  document.attachEvent("onkeydown",maskBackspace);              }                            function maskBackspace(event){                  var event = event || window.event;  //标准化事件对象                  var obj = event.target || event.srcElement;                  var keyCode = event.keyCode ? event.keyCode : event.which ?                          event.which : event.charCode;                  if(keyCode == 8){                      if(obj!=null && obj.tagName!=null && (obj.tagName.toLowerCase() == "input"                               || obj.tagName.toLowerCase() == "textarea")){                          event.returnValue = true ;                          if(Ext.getCmp(obj.id)){                              if(Ext.getCmp(obj.id).readOnly) {                                  if(window.event)                                      event.returnValue = false ;  //or event.keyCode=0                                  else                                      event.preventDefault();   //for ff                              }                          }                      }else{                          if(window.event)                              event.returnValue = false ;   // or event.keyCode=0                          else                              event.preventDefault();    //for ff                      }                  }              }                            var map = new Ext.KeyMap(document, [              {                  key: [116], // F5                  fn: function(){ },                  stopEvent: true,                  scope: this              },{                  key: [37,39,115], //方向键左,右,F4                  alt: true,                  fn: function(){ },                  stopEvent: true,                  scope: this              }, {                  key: [82],  // ctrl + R                  ctrl: true,                  fn: function(){ },                  stopEvent: true,                  scope: this              }]);              map.enable();  });

在IE中可以使用

<body onkeydown="if(event.keyCode==116){event.keyCode=0;return false;}">

0 0