JavaScript query string

javascript query-string
core picture core · Mar 15, 2009 · Viewed 160.6k times · Source

Is there any JavaScript library that makes a dictionary out of the query string, ASP.NET style?

Something which can be used like:

var query = window.location.querystring["query"]?

Is "query string" called something else outside the .NET realm? Why isn't location.search broken into a key/value collection ?

EDIT: I have written my own function, but does any major JavaScript library do this?

Answer

Christian C. Salvadó picture Christian C. Salvadó · Mar 15, 2009

You can extract the key/value pairs from the location.search property, this property has the part of the URL that follows the ? symbol, including the ? symbol.

function getQueryString() {
  var result = {}, queryString = location.search.slice(1),
      re = /([^&=]+)=([^&]*)/g, m;

  while (m = re.exec(queryString)) {
    result[decodeURIComponent(m[1])] = decodeURIComponent(m[2]);
  }

  return result;
}

// ...
var myParam = getQueryString()["myParam"];

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