Sometimes, we want to check if a query string value is present via JavaScript.
In this article, we’ll look at how to check if a query string value is present via JavaScript.
How to check if a query string value is present via JavaScript?
To check if a query string value is present via JavaScript, we can use the URLSearchParams constructor.
For instance, we write
const queryString = window.location.search;
const urlParams = new URLSearchParams(queryString);
const product = urlParams.get("product");
to get the query string from the current URL with window.location.search.
Then we pass queryString into the URLSearchParams constructor to create the urlParams object.
Finally, we get the value of the query parameter with key 'product' with urlParams.get.
Conclusion
To check if a query string value is present via JavaScript, we can use the URLSearchParams constructor.
