take some string with regex

Question

in Javascript i tried to read window.location.search. value of this variable could be something like ?ref=somestring&read=1 or ?read=1&ref=sometring or just ?ref=somestring.

how to extract only ref=somestring from the variable?

so far i tried the following regex:

ref.match(/ref=([^\&].*)\&/) // works when ?ref=somestring&read=1
ref.match(/ref=([^\&].*)\&/) // not working when only ?ref=somestring
ref.match(/ref=([^\&].*)\&?/) // works when ?ref=somestring
ref.match(/ref=([^\&].*)\&?/) // works but took all part if ?ref=somestring&read=1

anubhava · Accepted Answer · 2014-12-17 12:02:57Z

4

You can use:

var m = (ref.match(/[?&](ref[^&]+)/) || ['', ''])[1];

RegEx Demo

This regex firs matches: ? or & followed by literal text ref= followed by [^&]+ and groups ref[^&]+ in group #1.

answered Dec 17, 2014 at 12:02

anubhava

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Abdallah Arffak · Accepted Answer · 2014-12-17 12:18:59Z

0

Try

ref.match(/(ref=[^\&]*)/) //for ref=somestring

or

ref.match(/ref=([^\&]*)/) //for somestring

REGEX DEMO

edited Dec 17, 2014 at 12:18

answered Dec 17, 2014 at 12:11

Abdallah Arffak

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