String.prototype.replaceAll provides an easy way to replace all occurrences of a substring without creating a global RegExp.
const queryString = 'q=query+string+parameters';
// Works, but requires escaping inside regular expressions.
queryString.replace(/\+/g, ' ');
// → 'q=query string parameters'
// Simpler!
queryString.replaceAll('+', ' ');
// → 'q=query string parameters'