Search whole word in string

Question

I am looking for a function written in javascript ( not in jquery) which will return true if the given word exactly matches ( should not be case sensitive).

like..

Answer 1

Here is a function that returns true with searchText is contained within searchOnString, ignoring case:

function isMatch(searchOnString, searchText) {
  searchText = searchText.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
  return searchOnString.match(new RegExp("\\b"+searchText+"\\b", "i")) != null;
}

Update, as mentioned you should escape the input, I'm using the escape function from https://stackoverflow.com/a/3561711/241294.