tye

  // JavaScriptのコードを書く

てすと

(function moveText() {
var e = document.getElementById('move');
var sp = 4;
var pos = 0;

setInterval(move, 100);

function move() {
pos += sp;
e.style.left = pos + 'px';
if (pos % 200 == 0) sp *= (-1);
}
})();