ExtJs -- 12 -- Use of the requires uses singleton three configuration items of the Ext definition class

ExtJs -- 12 -- Use of the requires uses singleton three configuration items of the Ext definition class

Ext. use of onReady (function () {/** requires uses singleton three configuration items */Ext. define ("A", {// The required class time for loading requires is the requires: ["Ext. window. window "," Ext. button. button "], // when the uses class is required to be loaded, the current class is loaded after initialization uses: [" Ext. form. panel "," Ext. grid. panel "], // when the current class is initialized, this instance is a singleton: true })})