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<html> <head> <title>可以检测正确性的友情链接发送表单</title> <Script language="JavaScript"> <-- function validate_form() { validity = true; if (!check_empty(document.form.NAME.value)) { validity = false; alert('没有填写姓名!'); } if (!check_email(document.form.EMAIL.value)) { validity = false; alert('Email地址错误!'); } if (!check_url(document.form.URL.value)) { validity = false; alert('主页网址错误!'); } if (!check_empty(document.form.DESCRIPTION.value)) { validity = false; alert('缺少内容简介!'); } if (validity) alert ("Needed entries have been verified. " + "Your form is now being passed to your browser's " + "Mail Delivery Sub-System."); return validity; } function check_empty(text) { return (text.length > 0); } function check_email(address) { if ((address == "") || (address.indexOf ('@') == -1) || (address.indexOf ('.') == -1)) return false; return true; } function check_url(address) { if ((address == "") || (address.indexOf ('<a target="_blank" href=http://'>http://'</a>) == -1) || (address.indexOf ('.') == -1)) return false; return true; } // --> </Script> </head> <body> <form name="form" method="post" action="mailto:l@2.3.4.net?SUBJECT=友情连接" enctype="text/plain" onSubmit="return validate_form()"> <p>姓名:<br> <input type="text" size="40" name="NAME"><br> Email地址:<br> <input type="text" size="40" name="EMAIL"><br> 主页网址:<br> <input type="text" size="40" name="URL" value="http://"><br> 内容简介:<br> <textarea NAME="DESCRIPTION" ROWS="5" COLS="40" wrap="virtual">
