Life after jQuery

itd-be-so-empty-without-jquery.js

/****
 * helpers
 ****/
 
// Thanks http://stackoverflow.com/a/32538867
var isIterable = function( obj ) {
  // checks for null and undefined
  if (obj == null) {
    return false;
  }

  return typeof obj[Symbol.iterator] === 'function';
};


/****
 * Element Helpers
 ****/
 
var replaceClass = function( elm, oldVal, newVal ) {

  if (isIterable(elm)) {
    for (var i = 0; i < elm.length; i++) {
      replaceClass(elm[i], oldVal, newVal);
    }

    return elm;
  }

  var classes = elm.className
    .split(' ')
    .filter(function(item, pos, self) {
      return item.length != 0
        && self.indexOf(item) == pos; // is unique
    });

  if (classes.indexOf(newVal) === -1) {
    if (classes.indexOf(oldVal) !== -1) {
      classes[classes.indexOf(oldVal)] = newVal
    }
    else if (oldVal === null) {
      classes.push(newVal);
    }
  }

  elm.className = classes.join(' ');

  return elm;
};

var removeClass = function( elm, val ) {
  replaceClass(elm, val, '');

  return elm;
};

var addClass = function( elm, val ) {
  replaceClass(elm, null, val);

  return elm;
};


/****
 * Event Helpers
 ****/
 
 // Thanks http://stackoverflow.com/a/3150139
var addEvent = function(object, type, callback) {
    if (object == null || typeof(object) == 'undefined')
      return;
    
    if (object.addEventListener) {
        object.addEventListener(type, callback, false);
    } else if (object.attachEvent) {
        object.attachEvent("on" + type, callback);
    } else {
        object["on" + type] = callback;
    }
};