CODEWITHSUNDEEP
javascriptregexreplace
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Reputation: 9055

javascript regex to remove a substring from string

I have the following url 

example.com/p/deals&post_id=3

where post id is a get variable. I would like to sanitize the url string and the returned result should be 

example.com/p/deals

I have been trying to use JavaScript's .replace but because of the get variable at the end of url, doesn't seems to work. How would I build a regex to exclude this substring.

Upvotes: 2

Views: 3268

Answers (2)

Tracey Turn
Tracey Turn

Reputation: 598

To match all chars after and including the first & you would use the pattern

\&(.*)

and simply replace with an empty string.

the JS would be

var urlString = "example.com/p/deals&post_id=3";
var searchP = "\&(.*)" ;
var replaceP = "" ;
var rEx = new RegExp( searchP, urlString ) ;
var replacedText = sourceText.replace( rEx, replaceP ) ;

Upvotes: 3

James Hill
James Hill

Reputation: 61842

A regex is not needed for this. Simply split the string and take the first string from the array:

var str = "example.com/p/deals&post_id=3";
var san = str.split("&")[0];

Here's a working fiddle.

Upvotes: 3

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