How to forward UTM-tag from the referrer and put it in the address bar?

Question

JavaScript

Good afternoon, maybe someone has a solution that will help take the utm tag from the referrer and put it in the address bar?

Answer 1

see:
-> document.referrer
-> document.location
-> javascript working with strings
-> javascript working with arrays
-> javascript parsing url
well, for example, you can do this:

document.location.href += "&" + document.referrer
                                .split("?")[1]
                                .split("#")[0]
                                .split("&")
                                .filter(str => str.indexOf("utm_") > -1)
                                .join("&");

in case the referrer has no parameters, do a check

document.location.href += document.referrer.indexOf("?") > -1 ?
            "&" + document.referrer
            .split("?")[1]
            .split("#")[0]
            .split("&")
            .filter(str => str.indexOf("utm_") > -1)
            .join("&") : "";