[debounce] Useful for not making requests on every key stroke for example #havascript #helper #optimization

debounce.js

// send req after a few seconds have passed since user last wrote in the editor
export default function debounce(a,b,c){
    let d,e;
    return function(){
        function h(){
            d=null;
            c||(e=a.apply(f,g));
        }
        let f=this,g=arguments;
        return (clearTimeout(d),d=setTimeout(h,b),c&&!d&&(e=a.apply(f,g)),e)
    }
}


// Call it like this (Wait for 1.5s)
debounce(() => {}, 1500);



// ABOVE DOESN'T WORK. USE THIS ONE: 
var debounce = function debounce(func, wait) {
  var timeout;
  return function executedFunction() {
    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    var later = function later() {
      clearTimeout(timeout);
      func.apply(void 0, args);
    };

    clearTimeout(timeout);
    timeout = setTimeout(later, wait);
  };
};