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There are a couple of ways, to extract a single URL-parameter from a given string. A simple and easy way is to do it with a regular expression.
// The URL to check
var url = "http://www.frontcoded.com?myvalue=123&anothervalue=456";
// Here we search for the param 'myvalue'
var matchResult = url.match(/(\?|&)myvalue=([^&#]*).*$/);
var myvalue = null;
if(matchResult.length === 3) {
myvalue = matchResult[2];
}
console.log(myvalue) // logs 123The regex also works, if there is an hash parameter at the end like
http://url.com?myvalue=123#top