Tip: you can modify some code before running
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>Div flashing</title><style type="text/css"># Box {position: absolute; top: 50%; left: 50%; color: # fff; width: 200px; height: 200px; background: red; cursor: pointer; letter-spacing: 5px; text-align: center; font: 12px/200px Arial; margin:-100px 0 0-100px ;}</style><script type="text/javascript">Window. onload = function () {var oBox = document. getElementById ("box"); var timer = null; oBox. onclick = function () {var I = 0; clearInterval (timer); timer = setInterval (function () {oBox. style. display = I ++ % 2? "None": "block"; I> 6 & (clearInterval (timer)}, 80 )}};</script></head><body><div id="box">Click "I".</div></body></html></td> </tr></table>
Tip: you can modify some code before running
