正如標題所示,我似乎無法得到'.focus();'的工作。 並不知道爲什麼,據我可以告訴它應該工作得很好?彷彿看不到'.focus();'元素的工作...
我想要它,所以當按下提示的'ok'按鈕時,光標將準備好鍵入'userName'文本框。
預先感謝您。代碼如下。
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Com 311 | Week 9</title>
<script type="text/javascript">
function validName(){
var Name = document.userSurvey.userName.value;
if (Name=="")
{
alert ("Please enter your name.");
document.getElementById('userName').focus();
}
}
</script>
</head>
<body>
<h1> User Survey </h1>
<hr />
<h2> User Information </h2>
<h3>Please enter your details below:</h3>
<form name="userSurvey" onsubmit="validName()">
<p> Full Name: (required) </p>
<input type="text" size="30" name="userName"/>
<p> Email Address: (required) </p>
<input type="text" size="50" name="email"/>
<p> Phone Number: (required)</p>
<input type="number" size="30" name="phone"/>
<hr />
<p> Please choose your favourite type of book:</p>
<input type="checkbox" name="bookChoice0" value="Action">Action
<input type="checkbox" name="bookChoice1" value="Comic">Comic
<input type="checkbox" name="bookChoice2" value="Adventure">Adventure
<input type="checkbox" name="bookChoice3" value="Fantasy">Fantasy
<br /><br />
<input type="textarea" name="textarea"/>
<br /><br />
<input type="submit" value="Submit"/>
<input type="reset" value="reset"/>
</form>
</body>
</html>
你不會阻止提交 – charlietfl