如果您的名字是 Bob，我正在努力做到这一点，如果不是，那么您正在注册 抱歉，您无权访问，但我无法弄清楚我做错了什么，有人可以帮助我吗，谢谢。
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<meta http-equiv="content-type" content="text/html;charset=iso-8859-1" />
</head>
<script type="text/javascript">
function verify() {
var name="Please enter your name: ";
if (firstName=="Bob") {
alert("Now registered");
}
else {
window.alert("Sorry you aren't allowed acess.")
return false;
}
</script>
<form name="myForm" action="#" method="post" enctype="text/plain">
<input type="text" name="BOB">First Name<br>
<input type="button" value="Submit" onclick="verify();">
</form>
</body>
</html>
最佳答案
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<meta http-equiv="content-type" content="text/html;charset=iso-8859-1" />
</head>
<script type="text/javascript">
function verify() {
var name="Please enter your name: ";
var firstName = document.getElementById('firstName').value;
if (firstName=="Bob") {
alert("Now registered");
return true;
}
else {
window.alert("Sorry you aren't allowed acess.")
return false;
} }
</script>
<form name="myForm" action="#" method="post" onsubmit="return verify();" enctype="text/plain">
<input id="firstName" type="text" name="BOB"/>First Name<br>
<input type="button" value="Submit"/>
</form>
</body>
</html>
你必须在表单标签上使用 onsubmit 并且它必须返回 true 或 false
关于javascript - 谁能告诉我我做错了什么，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/5222394/