How to extract values using javascript?

Question

I have one string

var str = '';
str += 'category='+jv('category')+'&';

str += 'refresh_rate='+jv('refreshRate')+'&';

str += 'submit=Y';

now I want to take values from jv('category') and jv('refreshRate') in separate string in javascript (I want to extract values after "=" and before "&").

Thanks.

Question is unclear. What is `jv`, and where is the category and refreshRate value coming from? — Anurag, Aug 23 '10 at 06:19
jv is like this function jv(divid){if(document.getElementById(divid)) return document.getElementById(divid).value; } — rajesh, Aug 23 '10 at 06:45

score 0 · Answer 1 · answered Aug 23 '10 at 05:28

0

You can use http://github.com/allmarkedup/jQuery-URL-Parser or any other URL parser for this sort of string.

answered Aug 23 '10 at 05:28

Māris Kiseļovs

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Matt Wolfe · Accepted Answer · 2010-08-23T17:22:31.670

I've used this: http://blog.stevenlevithan.com/archives/parseuri URI Parser in the past and find it simple to use and it doesn't rely on any other libraries. Its also pretty lightweight.

The author has a demo page but doesn't really explain how to use it.. Its really simple, you just do something like this:

var url = "http://my-site.com:8081/index.html?query=go&page=2";
var parsed = parseUri(url);

From there you can get things like the host/protocol/port/etc.. When dealing with the querystring you do

var page = parsed.queryKey.page;
alert(page); //alerts 2

Click the parse button on the demo page to see all properties of the parsed URI object that you can access..

How to extract values using javascript?

2 Answers2