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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>本教程(w3big.com)</title> <script> function changeLink(){ document.getElementById('myAnchor').innerHTML="W3Cschool"; document.getElementById('myAnchor').href="http://www.w3cschool.cc"; document.getElementById('myAnchor').target="_blank"; } </script> </head> <body> <a id="myAnchor" href="http://www.microsoft.com">Microsoft</a> <input type="button" onclick="changeLink()" value="修改链接"> </body> </html>