Select2 4.0.1: How to return only first character matched results?

Question

I am using Select2 Version 4.0.1, while searching any name, I would like to show only those records which is matched by first character. eg: I start from "c" then show only those names which start from "c". See attachment.

I tried different methods was available on stackoverflow, but no luck. eg: tried this one also, but got this error "select2 text.toUpperCase is not a function"

$("select").select2({
    matcher: function(term, text) {
      return text.toUpperCase().indexOf(term.toUpperCase())==0;
    }
});

Answer 1

Do you use the full version of select2 ? if yes, try this exemple

function matchStart (term, text) {
  if (text.toUpperCase().indexOf(term.toUpperCase()) == 0) {
    return true;
  }

  return false;
}

$.fn.select2.amd.require(['select2/compat/matcher'], function (oldMatcher) {
  $("select").select2({
    matcher: oldMatcher(matchStart)
  })
});