Two CSS animation to discover the need for a previous project

First JS here:

  function addanimation (argument) {
            $ ('. Plane-outer '). addclass (' plane-outer-animation ');
            $ ('. Plane '). addclass (' plane-animation ');
            $ ('. Text '). addclass (' text-animation ');
        }
        function removeanimation (argument) {
            $ ('. Plane-outer '). Removeclass (' plane-outer-animation ');
            $ ('. Plane '). Removeclass (' plane-animation ');
            $ ('. Text '). Removeclass (' text-animation ');
        }
        Addanimation ();

Then use the timing to remove the animation:

  var num = 0;
        Function timing () {
            num++;
            if (num% = 0) {
                removeanimation ();
            } else if (num% = 2) {
                addanimation ();
        }} SetInterval ("timing ()", 1000);

Animate CSS on two div and finish off animation, CSS3 style as follows:

. Index. plane-outer-animation {
  -webkit-animation:forward 6s 1 linear;
          Animation:forward 6s 1 linear;
Index. plane-animation {
  -webkit-animation:down 6s 1 ease-in;
          Animation:down 6s 1 ease-in;
Index. text-animation {
  -webkit-animation:dashin 1s 5s 1 ease-in, wobble 2s 5s 2, dashout 5s 6s 1;
          Animation:dashin 1s 5s 1 ease-in, wobble 2s 5s 2, dashout 5s 6s 1;