What is the easiest way to read/manipulate query string params using javascript?

Question

The examples I\'ve seen online seem much more complex than I expected (manually parsing &/?/= into pairs, using regular expressions, etc). We\'re using asp.net

Answer 1

Use the String utility from prototypejs.org, called toQueryParams().

Example from their site: http://prototypejs.org/api/string/toQueryParams

'section=blog&id=45'.toQueryParams();
// -> {section: 'blog', id: '45'}

'section=blog;id=45'.toQueryParams();
// -> {section: 'blog', id: '45'}

'http://www.example.com?section=blog&id=45#comments'.toQueryParams();
// -> {section: 'blog', id: '45'}

'section=blog&tag=javascript&tag=prototype&tag=doc'.toQueryParams();
// -> {section: 'blog', tag: ['javascript', 'prototype', 'doc']}

'tag=ruby%20on%20rails'.toQueryParams();
// -> {tag: 'ruby on rails'}

'id=45&raw'.toQueryParams();
// -> {id: '45', raw: undefined}

Also, you may use the alias parseQuery() to obtain the same results.

window.location.search.parseQuery();

Since window.location returns an object, you must obtain the string.