For example:
"""
Remove all occurrences of string w from string s1, and store the result in s2.
var s2 = s1.replace(w, '');
"""
Since w is a string, this will only replace the first occurrence, not all occurrences.
var regex = RegExp(w, 'g');
var s2 = s1.replace(regex, ''); str.split(before).join(after)You could try to escape those special characters but that is potentially error prone.
For an arbitrary w, one approach is something kind of awful like:
let s2 = s1;
while (s2.includes(w)) {
s2 = s2.replace(w, '')
}