Easiest way to replace a substring in javascript

Question

Whats the easiest way in javascript to replace ABC, DEF, GHI with XYZ in the following strings

http://z.site.com/z/ABC/z/z.html
http://z.site.com/z/DEF/z/z.html
http://z.site.com/z/GHI/z/z.html

mwilcox · Accepted Answer · 2010-04-10 23:51:42Z

4

var url = "http://z.site.com/z/ABC/z/z.html";
url = url.replace(/ABC|DEF|GHI/, "XYZ");

answered Apr 10, 2010 at 23:51

mwilcox

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Jason Orendorff · Accepted Answer · 2010-04-10 23:55:42Z

1

You can use a regular expression to detect that pattern and change the three letters in question:

s = s.replace(/^http:\/\/z\.site\.com\/z\/.../, 'http://z.site.com/z/XYZ');

answered Apr 10, 2010 at 23:55

Jason Orendorff

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I use $1 to get the beginning since the subdomain and the first /z MAY change.