Check if a URL has query string

query.js

/**
* Return value if the current location has a query string.
*
* @params {string} lookUpString - The query string to search for.
* @returns {string} value of the query string if present. 
*
* Example: getValueIfHasQueryString("v") <= "2"
**/
function getValueIfHasQueryString(lookUpString) {
    const url = new URL(window.location.href);
    const searchParams = new URLSearchParams(url.search);

    return searchParams.get(lookUpString)
}

/**
* Return true/false if the current location has a query string.
*
* @params {string} lookUpString - The query string to search for.
* @returns {boolean} true/false of the query string if present. 
*
* Example: getValueIfHasQueryString("v") <= true
**/
function hasQueryString(lookUpString) {
    const url = new URL(window.location.href);
    const searchParams = new URLSearchParams(url.search);

    return searchParams.has(lookUpString);
}