Answer:
Ext.onReady is probably the first method that you’ll use on every page. This method is automatically called once the DOM is fully loaded, guaranteeing that any page elements that you may want to reference will be available when the script runs
syntax:
Ext.onReady(function() {
alert(“Congratulations! You have Ext configured correctly!”);
});
syntax:
Ext.onReady(function() {
alert(“Congratulations! You have Ext configured correctly!”);
});