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From: Dr J R Stockton <reply1141@merlyn.demon.co.uk>
Newsgroups: comp.lang.javascript
Subject: Re: String Replace. Please, need help.
Date: Fri, 14 Oct 2011 21:02:41 +0100
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In comp.lang.javascript message <11174912.1946.1318534920723.JavaMail.ge
o-discussion-forums@vbmh5>, Thu, 13 Oct 2011 12:42:00, Shapper.
<mdmoura@gmail.com> posted:

>I am using "replace" as follows:
>
>content = source.replace("{id}", options.id).replace("{title}", title);
>
>However "source" might have or not have the strings "{id}" and "{title}".
>When it does not have I get an error.
>How can I solve this?

Use
        X = source.replace("{id}", options.id)
        content = X.replace("{title}", title)
and then you can test that in each case a change has been made, by
comparing the strings with == or != .

-- 
 (c) John Stockton, nr London, UK.    ?@merlyn.demon.co.uk     Turnpike v6.05.
 Website  <http://www.merlyn.demon.co.uk/> - w. FAQish topics, links, acronyms
 PAS EXE etc. : <http://www.merlyn.demon.co.uk/programs/> - see in 00index.htm
 Dates - miscdate.htm estrdate.htm js-dates.htm pas-time.htm critdate.htm etc.