How to replace url parameter with javascript/jquery?

Question

I\'ve been looking for an efficient way to do this but haven\'t been able to find it, basically what I need is that given this url for example:

http://localh         


        

Answer 1

Here is modified stenix's code, it's not perfect but it handles cases where there is a param in url that contains provided parameter, like:

/search?searchquery=text and 'query' is provided.

In this case searchquery param value is changed.

Code:

function replaceUrlParam(url, paramName, paramValue){
    var pattern = new RegExp('(\\?|\\&)('+paramName+'=).*?(&|$)')
    var newUrl=url
    if(url.search(pattern)>=0){
        newUrl = url.replace(pattern,'$1$2' + paramValue + '$3');
    }
    else{
        newUrl = newUrl + (newUrl.indexOf('?')>0 ? '&' : '?') + paramName + '=' + paramValue
    }
    return newUrl
}