Removing query string parameter from Url
router.replace() is to navigate by removing the current URL from the browser history stack and replace it with the argument route you pass to it.
The actual syntax is router.replace(url_location, onComplete, onAbort).
What you are doing is router.replace(my_param, null) which is removing the current URL from the history stack and replacing it with 'my_param' and for the onComplete callback you are passing a null
So do it like this:
this.$router.replace('/')More info on programatic navigation
In the case that you have multiple query parameters the correct way to remove one of them would be:
const query = Object.assign({}, this.$route.query);delete query.my_param;this.$router.replace({ query });