W3Schools 在线编辑工具（TIY） V3.0
编辑的代码:
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<html> <head> <style> a { color:black; width:150; font:bold; } </style> <script type="text/javascript"> var i function glow() { i=0 interval=setInterval("makeglow(myLink)",10) } function back() { clearInterval(interval) document.getElementById('myLink').style.filter=false } function makeglow() { i++ if (i<5) { document.getElementById('myLink').style.filter="glow(color=#FF00FF,strength=" + i + ")" } else if (window.interval) { clearInterval(interval) } } </script> </head> <body> <a href="/index.html" id="myLink" onmouseover="glow()" onmouseout="back()">请把鼠标移动到链接上</a> </body> </html>