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

I have get best solution to replace the URL parameter.

Following function will replace room value to 3 in the following URL.

http://example.com/property/?min=50000&max=60000&room=1&property_type=House

var newurl = replaceUrlParam('room','3');
history.pushState(null, null, newurl);

---

function replaceUrlParam(paramName, paramValue){
    var url = window.location.href;

    if (paramValue == null) {
        paramValue = '';
    }

    var pattern = new RegExp('\\b('+paramName+'=).*?(&|#|$)');
    if (url.search(pattern)>=0) {
        return url.replace(pattern,'$1' + paramValue + '$2');
    }

    url = url.replace(/[?#]$/,'');
    return url + (url.indexOf('?')>0 ? '&' : '?') + paramName + '=' + paramValue;
}

Output

http://example.com/property/?min=50000&max=60000&room=3&property_type=House

Answer 2

In modern browsers (everything except IE9 and below), our lives are a little easier now with the new URL api

var url = new window.URL(document.location); // fx. http://host.com/endpoint?abc=123
url.searchParams.set("foo", "bar");
console.log(url.toString()); // http://host/endpoint?abc=123&foo=bar
url.searchParams.set("foo", "ooft");
console.log(url.toString()); // http://host/endpoint?abc=123&foo=ooft

Answer 3

The following solution combines other answers and handles some special cases:

• The parameter does not exist in the original url
• The parameter is the only parameter
• The parameter is first or last
• The new parameter value is the same as the old
• The url ends with a ? character
• \b ensures another parameter ending with paramName won't be matched

Solution:

function replaceUrlParam(url, paramName, paramValue)
{
    if (paramValue == null) {
        paramValue = '';
    }
    var pattern = new RegExp('\\b('+paramName+'=).*?(&|#|$)');
    if (url.search(pattern)>=0) {
        return url.replace(pattern,'$1' + paramValue + '$2');
    }
    url = url.replace(/[?#]$/,'');
    return url + (url.indexOf('?')>0 ? '&' : '?') + paramName + '=' + paramValue;
}

Known limitations:

• Does not clear a parameter by setting paramValue to null, instead it sets it to empty string. See https://stackoverflow.com/a/25214672 if you want to remove the parameter.

Answer 4

In addition to @stenix, this worked perfectly to me

 url =  window.location.href;
    paramName = 'myparam';
        paramValue = $(this).val();
        var pattern = new RegExp('('+paramName+'=).*?(&|$)') 
        var newUrl = url.replace(pattern,'$1' + paramValue + '$2');
        var n=url.indexOf(paramName);
        alert(n)
        if(n == -1){
            newUrl = newUrl + (newUrl.indexOf('?')>0 ? '&' : '?') + paramName + '=' + paramValue 
        }
        window.location.href = newUrl;

Here no need to save the "url" variable, just replace in current url

Answer 5

Wouldn't this be a better solution?

var text = 'http://localhost/mysite/includes/phpThumb.php?src=http://media2.jupix.co.uk/v3/clients/4/properties/795/IMG_795_1_large.jpg&w=592&aoe=1&q=100';
var newSrc = 'www.google.com';
var newText = text.replace(/(src=).*?(&)/,'$1' + newSrc + '$2');

EDIT:

added some clarity in code and kept 'src' in the resulting link

$1 represents first part within the () (i.e) src= and $2 represents the second part within the () (i.e) &, so this indicates you are going to change the value between src and &. More clear, it should be like this:

src='changed value'& // this is to be replaced with your original url

ADD-ON for replacing all the ocurrences:

If you have several parameters with the same name, you can append to the regex global flag, like this text.replace(/(src=).*?(&)/g,'$1' + newSrc + '$2'); and that will replaces all the values for those params that shares the same name.