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From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Newsgroups: comp.lang.javascript
Subject: Re: intercept an alert
Date: Mon, 12 May 2014 11:32:55 +0200
Organization: PointedEars Software (PES)
Lines: 26
Message-ID: <3910370.hJEAF5dPUy@PointedEars.de>
References: <862dneogqrcsze3OnZ2dnUVZ_gCdnZ2d@westnet.com.au> <raKdnSsnnK2Ow-3OnZ2dnUVZ_sadnZ2d@westnet.com.au>
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Xref: csiph.com comp.lang.javascript:24138

Andrew Poulos wrote:

> if (!window._alert) {
>    window._alert = window.alert;
> }
> 
> window.alert = function(msg){
>    if (msg.indexOf('is empty') != -1) {
>      return false;
>    } else {
>      return window._alert.apply(this, arguments);
>    }
> };
> 
> Is this the way to go?

Not quite.  You should not augment the host object referred to by “window” 
with an “_alert” property (modifying its “alert” property is bad enough, but 
I cannot see a better alternative here).  Use a variable or a property of 
your own object instead.

-- 
PointedEars
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