api/extjs/browser-part/e-br.js
function isExtJsReady() {
      return !(typeof Ext === 'undefined' || !Ext.isReady || typeof Ext.onReady === 'undefined' ||
        typeof Ext.Ajax === 'undefined' || typeof Ext.Ajax.on === 'undefined');
    }
function isExtJsReady() {
      return !(typeof Ext === 'undefined' || !Ext.isReady || typeof Ext.onReady === 'undefined' ||
        typeof Ext.Ajax === 'undefined' || typeof Ext.Ajax.on === 'undefined');
    }
function isExtJsReady ( ) { return ! ( typeof Ext === 'undefined' || ! Ext . isReady || typeof Ext . onReady === 'undefined' || typeof Ext . Ajax === 'undefined' || typeof Ext . Ajax . on === 'undefined' ) ; }
It if returns true there is not a bad chance that ExtJs application is ready to use. Deprecated.
It if returns true there is not a bad chance that ExtJs application is ready to use . Deprecated .