Javascript prevent redundancy when joining multiple arrays
replace only works on the first found item in the string. You can either use replaceAll, or split and join, which is more cross-browser friendly as below:
function cleanLink(link) {
let newLink = link.split('&&').join('&'); // remove duplicate ampersands
if (newLink[0] === '&') {
newLink = newLink.slice(1); // remove starting ampersand
}
if (newLink[newLink.length - 1] === '&') {
newLink = newLink.slice(0,-1); // remove trailing ampersand
}
return newLink;
}