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Groups > comp.lang.javascript > #18001
| From | Stefan Weiss <krewecherl@gmail.com> |
|---|---|
| Newsgroups | comp.lang.javascript |
| Subject | Re: Global variable is deletable? |
| Date | 2013-01-07 11:24 +0100 |
| Organization | albasani.net |
| Message-ID | <kce7oa$h9o$1@news.albasani.net> (permalink) |
| References | <95a66842-702a-416d-9575-e47c82e6667e@googlegroups.com> |
On 2013-01-07 10:21, Thomas Li wrote: > Hi, I'm fresh in Javascript. From the book "Javascript, the > definitive guide", the global variable should be nondeletable, > however when I test it in IE, it is deletable, anything wrong? > Steps: > 1. Open IE 9 > 2. Press F12 and select Console panel > 3. Var temp = 1; > delete temp; > 4. it returns true and when I enter temp, it says "temp is undefined" When you enter something in the console, it gets evaluated with eval(). Variables created from eval()ed code don't have the DontDelete flag set. Details: http://perfectionkills.com/understanding-delete/#firebug_confusion - stefan
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Global variable is deletable? Thomas Li <cooooooder@gmail.com> - 2013-01-07 01:21 -0800
Re: Global variable is deletable? Stefan Weiss <krewecherl@gmail.com> - 2013-01-07 11:24 +0100
Re: Global variable is deletable? JJ <jaejunks@nah.meh> - 2013-01-07 15:36 +0000
Re: Global variable is deletable? Scott Sauyet <scott.sauyet@gmail.com> - 2013-01-07 07:50 -0800
Re: Global variable is deletable? Thomas Li <cooooooder@gmail.com> - 2013-01-07 22:08 -0800
Re: Global variable is deletable? dann90038@gmail.com - 2013-01-07 13:25 -0800
Re: Global variable is deletable? Thomas Li <cooooooder@gmail.com> - 2013-01-07 21:48 -0800
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