Question

我一直在研究这个代码用于我的GCSE评估，但我似乎无法使JavaScript工作，我已经查看了我的代码几个星期了，我仍然无法找到内部的逻辑错误我怀疑我错过了一些让Java工作的东西，如果有人可以帮助它会非常有帮助

我正在浏览的当前代码：

<head>
<title>Exam entry</title>

<script> language="javascript" type="text/javascript".

function ValidateForm() {
	var result = true;
	var msg="";

if (document.ExamEntry.name.value=="") {
	msg+="You must enter your name \n";
	document.ExamEntry.name.focus();
	document.getElemenById('name').style.color="red";
	result = false;
	}

if (document.ExamEntry.subject.value=="") {
	msg+="You must enter the subject \n";
	document.ExamEntry.subject.focus();
	document.geElementById('subject').style.color="red";
	result = false;
	}

if (document.ExamEntry.exam number.value=="") {
	msg+="You must enter your exam number \n";
	document.ExamEntry.subject.focus();
	document.geElementById('exam number').style.color="red";
	result = false;
	}

	if(msg==""){
	return result;
	}

	{
	alert(msg)
	return result;
}
</script>
</head>

<body>
<h1>Exam Entry Form</h1>
<form name="ExamEntry" method="post" action="success.html">
<table width="50%" border="0">
	<tr>
	<td id="name">Name</td>
	<td><input type="text" name="name" /></td>
	</tr>
	<tr>
	<td id="subject">Subject</td>
	<td><input type="text" name="subject" /></td>
	</tr>
	<tr>
	<td id="exam number">Exam Number</td>
	<td><input type="text" name="Exam Number" /></td>
	</tr>
<tr>
	<td><input type="submit" name="submit" value="submit" onclick="return
validateForm();"/></td>
	<td><input type="reset" name="Reset" value="Reset" /></td>
</tr>

</table>
</form>
</body>

Answer 1

整理你的代码片段提出了真正的问题：

＆＃13;

function ValidateForm() {
	var result = true;
	var msg="";

if (document.ExamEntry.name.value=="") {
	msg+="You must enter your name \n";
	document.ExamEntry.name.focus();
	document.getElemenById('name').style.color="red";
	result = false;
	}

if (document.ExamEntry.subject.value=="") {
	msg+="You must enter the subject \n";
	document.ExamEntry.subject.focus();
	document.geElementById('subject').style.color="red";
	result = false;
	}

if (document.ExamEntry.exam number.value=="") {
	msg+="You must enter your exam number \n";
	document.ExamEntry.subject.focus();
	document.geElementById('exam number').style.color="red";
	result = false;
	}

	if(msg==""){
	return result;
	}

	{
	alert(msg)
	return result;
}

＆＃13;

<h1>Exam Entry Form</h1>
<form name="ExamEntry" method="post" action="success.html">
<table width="50%" border="0">
	<tr>
	<td id="name">Name</td>
	<td><input type="text" name="name" /></td>
	</tr>
	<tr>
	<td id="subject">Subject</td>
	<td><input type="text" name="subject" /></td>
	</tr>
	<tr>
	<td id="exam number">Exam Number</td>
	<td><input type="text" name="Exam Number" /></td>
	</tr>
<tr>
	<td><input type="submit" name="submit" value="submit" onclick="return
validateForm();"/></td>
	<td><input type="reset" name="Reset" value="Reset" /></td>
</tr>

</table>

＆＃13;

SyntaxError: missing ) after condition  
if (document.ExamEntry.exam number.value=="") {  
---------------------------^

如果您的变量中有空格，则无法使用点表示法，但可以使用方括号表示法。将该行更改为：

if (document.ExamEntry["Exam Number"].value=="") {

我的GCSE评估的代码

1 个答案: