CODEWITHSUNDEEP
javascriptregex
user357086
user357086

Reputation: 404

Using javascript Regexp object to replace a value in url

<script type="text/javascript">
var currstr = "?distance=10&city=Boston&criteria=shoes&size=10";
var selcity = "California"; //This can come from a drop down

var pat = new RegExp([NEEDPATTERN],"gi");
currstr.replace(pat,selcity);
</script>

I need some help replacing city=Boston in currstr with a value user selects from drop down, right now I have hardcoded value in var selcity. I have placed a [NEEDPATTERN] marker for pattern that can be used to achieve this.

Can someone help me with this pattern?

Upvotes: 0

Views: 103

Answers (3)

nachito
nachito

Reputation: 7035

If it's possible, rather than replacing you should leave city out entirely and tack it on at the end. Then you don't have to deal with regexing which could be more complicated than the current answers if you take into account entities like &amp;:

<script type="text/javascript">
 var currstr = "?distance=10&criteria=shoes&size=10";
 var selcity = "California"; //This can come from a drop down

 currstr += "&city=" + encodeURIComponent(selcity);
</script>

Upvotes: 0

Paul Armstrong
Paul Armstrong

Reputation: 7156

Do you want to replace "Boston" specifically, or do you need to just replace the X in city=X?

For boston, you can just use simple substitution... currstr.replace('Boston', selcity)

For replacing X, you can do: currstr.replace(/city=([^&]+)/, selcity);

Upvotes: 0

Eric Yin
Eric Yin

Reputation: 8993

/City=([^&]+)/gi

should do the trick

Upvotes: 1

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