Use of ext learning _ component (window, prompt box)

1 window contains floating, drag, close, maximize, and minimize features [html] vari0; functionnewWin () {varwinnewExtWindow ({title: & quot; window & quot; + I ++, width: 400, height: 300, 1. the window contains floating, drag, close, maximize, and minimize features [html] var I = 0; function newWin () {var win = new Ext. window ({title: "Window" + I ++, width: 400, height: 300, maximizable: true}); win. show ();} Ext. onReady (function () {Ext. get ("btn "). on ("click", newWin) ;}); [html] Prompt box: [html] Ext. messageBox. alert ("Please note", "this is the prompt box for ExtJS"); Ext. messageBox. confirm ("Please confirm", "whether you really want to delete the specified content", function (button, text) {alert (button); alert (text) ;}); Ext. messageBox. confirm ("confirm", "whether to delete the specified content", function (button, text) {if (button = "yes ") {// execute the delete operation alert ("deleted successfully") ;}}); Ext. messageBox. prompt ("Enter prompt box", "Enter your New Year's wishes:", function (button, text) {if (button = "OK ") {alert ("your New Year's wish is:" + text);} else alert ("You gave up inputting! ") ;}); Three buttons prompt box, yes, no, cancel [html] Ext. msg. show ({title: 'save data', msg: 'You have performed some data operations. Do you want to save changes to the current content? ', Buttons: Ext. msg. YESNOCANCEL, // three buttons: yes, no, cancel fn: save, // call the following method icon: Ext. messageBox. QUESTION}) ;}); function save (button) {if (button = "yes") {// execute the data save operation} else if (button = "no ") {// do not save data} else {// cancel current operation }}