Disable scroll with JavaScript

DisableScroll.js

var DisableScroll = {

    // Liste des variable/donnée de l'objet
    // @use => POC.cache.posTop
    cache: {
        keys: [37, 38, 39, 40]
    },

    preventDefault: function(e) {
        e = e || window.event;
        if (e.preventDefault)
            e.preventDefault();
        e.returnValue = false;  
    },


    keydown: function(e) {

        for (var i = DisableScroll.cache.keys.length; i--;) {
            if (e.keyCode === DisableScroll.cache.keys[i]) {
                DisableScroll.preventDefault(e);
                return;
            }
        }
    },

    wheel: function(e) {
        DisableScroll.preventDefault(e);
    },

    disableScroll: function() {

      if (window.addEventListener) {
          window.addEventListener('DOMMouseScroll', this.wheel, false);
      }

      window.onmousewheel = document.onmousewheel = this.wheel;
      document.onkeydown = this.keydown;
    },

    enableScroll: function() {

        if (window.removeEventListener) {
            window.removeEventListener('DOMMouseScroll', this.wheel, false);
        }

        window.onmousewheel = document.onmousewheel = document.onkeydown = null;  
    },
};