Disable pop-up warning box for JavaScript alert popup _javascript Tips

This article describes the way to disable JavaScript's alert pop-up box, which is to prevent JS from ejecting the warning box.

Because now all advocate green Internet environment, pop-up box will inevitably affect your mood, so through the following code can be JS pop-up box screen off.

<script language= "JavaScript" >
<!--
Window.alert = function (str) {return
;
}
Alert ("No pop-up Alert box");//-->
</script>

The idea is to override the "alert" method, overriding the syntax: "Old method =function (parameter) {contents of new method}". The return value is "false", indicating that no action is performed. You can also enter in the Address bar: Javascript:alert (window.alert=function (str) {return;});