jquery Easyui Alert Flash a question

Recent projects using JQuery Easyui, version 1.4.3.x, when using the alert method if the alert after the page jump, the alert message will only Flash, jump to other pages

$.messager.alert (' Hint ', ' I'm the pop-up box! '= ' index.html ';
When this happens, the alert flashes and jumps.

In order to give the user a message to see the prompt box, you can click "Confirm" when the user is jumping, so that it does not blink and then jump

$.messager.alert (' Hint ', "I'm a popup! ", ' info ',function() {    = ' index.html ';});

Icon Four settings: "Error", "info", "question", "warning"

jquery Easyui Alert Flash a question