<html> <head> <title>URL</title> <script> function go() { if ((document.form.url.value=="")) {alert("URL을 입력하여 주세요"); return false; } window.open(""+document.form.url.value+"") } </script> </head> <body> <form name="form" method="post" onsubmit="return go();"> 주소를 입력하여 주세요: <input type="text" value="" name="url"> <input type="button" value="Go.." onclick="go()"> <input type="reset" value="초기화"> </form> </body> </html>
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