Javascript String Replace

Original Message

Name: chazco
Date: May 26, 2005 at 06:20:58 Pacific
Subject: Javascript String Replace
OS: WinXP
CPU/Ram: 256MB

Comment:

I need to replace PART of a javascript string. The string contains a line of HTML, and i need to replace between two tags in it.
e.g. <html><head>DD</head></html>
Change DD for something else by searching for head. Any ideas how?

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Response Number 1

Name: Chi Happens
Date: May 26, 2005 at 08:17:32 Pacific
Subject: Javascript String Replace

Reply: (edit)

you use IndexOf
Chi
They mostly come at night...mostly

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Response Number 2

Name: chazco
Date: May 26, 2005 at 13:34:01 Pacific
Subject: Javascript String Replace

Reply: (edit)

Thanks Chi. But how do you change the text inside once you've found it. Plus, how do you search wildcards, e.g. search in a string for <body *>*</body>.

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Response Number 3

Name: Dr. Nick
Date: May 26, 2005 at 20:38:00 Pacific
Subject: Javascript String Replace

Reply: (edit)

Use regular expressions.
For example, to replace 'DD' in your first example with 'Howdy', you would do something like:
==================================================================
oldString = "<html><head>DD</head></html>";
newString = oldString.replace(/<head>DD<\/head>/g, "<head>Howdy</head>");
You could use a wildcard so no matter what is between <head> and </head> it gets replaced with 'Howdy' like this:
oldString = "<html><head>DD</head></html>";
newString = oldString.replace(/<head>.*<\/head>/g, "<head>Howdy</head>");
(Make sure to escape any forward slashes in the regular expression [bold above] with a backslash, ie: use <\/head> NOT </head>)
Does that answer your question?

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Response Number 4

Name: chazco
Date: June 13, 2005 at 05:05:28 Pacific
Subject: Javascript String Replace

Reply: (edit)

Thanks everyone. Solved it. (Sorry for delay in replying but had exams)

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