simple delay javascript function,when you care about duplicate execute

delay.es6.js

let timer;
const delay = (func, ms = 500) => {
  clearTimeout(timer);
  timer = setTimeout(func, ms);
}

export default delay;

delay.js

var delay = (function(){
  var timer;
  return function(func, ms){
    clearTimeout(timer);
    timer = setTimeout(func, ms);
  };
})();

// USAGE
// delay(function(){console.log("you won't see me")},1000);
// delay(function(){console.log("you won't see me")},1000);
// delay(function(){console.log("here!")},1000);