小编Har*_*rry的帖子

在Extjs 4.2中,我在整个页面中使用了Load Mask

在常见的实用程序类中:

loadMask: null,
showLoading : function() {
    if (!this.loadMask) {
      this.loadMask = new Ext.LoadMask(Ext.getBody(), { msg: "Loading..." });
    }
    this.loadMask.show();
  },

  clearLoading:function() {
    this.loadMask.hide();
  },

我在加载/保存期间在所有页面中调用此方法(等待服务器端响应),但在Extjs 5.0中,它无法正常工作,我收到以下错误消息:

Uncaught TypeError: Cannot call method 'mask' of undefined all-classes.js:1
Ext.define.show all-classes.js:1
Ext.define.loadingProcess all-classes.js:1
Ext.define.listeners.beforeload all-classes.js:1
Ext.define.doFire all-classes.js:1
Ext.define.fire all-classes.js:1
Ext.define.doDispatchEvent all-classes.js:1
Ext.define.dispatchEvent all-classes.js:1
Ext.define.doFireEvent all-classes.js:1
a.doFireEvent all-classes.js:1
Ext.define.fireEvent all-classes.js:1
Ext.define.load