Search for all instances of a string inside a string

Question

Hello I am using indexOf method to search if a string is present inside another string. But I want to get all the locations of where string is? Is there any method to get al

Answer 1

Here's a regex way to do it:

function positions(str, text) {
  var pos = [], regex = new RegExp("(.*?)" + str, "g"), prev = 0;
  text.replace(regex, function(_, s) {
    var p = s.length + prev;
    pos.push(p);
    prev = p + str.length;
  });
  return pos;
}