我想知道为什么仍然提交表单而不显示验证结果。我尝试过在输入类型行上也有一个onclick事件，但也没有喜悦:-(
这是表格
<!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" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-type" content="text/html; charset=iso-8859-1"/>
<title>Submit a runner time</title>
</head>
<body>
<script src="TMA02validationSubmitResultForm.js"></script>
<hr/>
<h1>Submit a runner time</h1>
<hr/>
Note: all fields marked '*' are mandatory.
<p/>
<form action="http://jdm423.tt284.open.ac.uk/uploadblock2/storedata.php" method="post" onsubmit="return validateForm()" id="submitrunnertime" name="submitrunnertime">
<table>
<div id="error"> </div>
<tr><td>Runner ID*</td>
<td><input type="text" onblur="validateRunnerId()" id="RunnerId" name="RunnerId" size="5" maxlength="5"/></td>
</tr>
<tr><td>Event ID*</td>
<td><input type="text" onblur="validateEventId()" name="EventId" id="EventId" size="5" maxlength="5"/></td>
</tr>
<tr><td>Date (YYYY-MM-DD)*</td>
<td><input type="text" onblur="validateDate()" name="Date" id="When" size="10" maxlength="10"/></td>
</tr>
<tr><td>Finish time (HH:MM:SS)*</td>
<td><input type="text" onblur="validateTime()" name="FinishTime" id="Time" size="8" maxlength="8"/></td>
</tr>
<tr><td>Position*</td>
<td><input type="text" onblur="validatePosition()" name="Position" id="Position" size="5" maxlength="5"/></td>
</tr>
<tr><td>Category ID*</td>
<td><input type="text" onblur="validateCategoryId()"name="CategoryId" id="CategoryId" size="2" maxlength="3"/></td>
</tr>
<tr><td>Age grade*</td>
<td><input type="text" onblur="validateAge()" name="AgeGrade" id="Age" size="5" maxlength="5"/></td>
</tr>
<tr><td>Personal best</td>
<td><input type="text" onblur="validatePB()" name="PB" id="PB" size="1" maxlength="1"/></td>
</tr>
</table>
<input type="submit" name="submitrunnertime" id="submitrunnertime" value="submit"/>
<hr/>
</form>
</body>
</html>
和JS
function validateForm() {
return (validateRunnerId
&& validateEventId
&& validateDate
&& validateTime
&& validatePosition
&& validateCategoryId
&& validateAge
&& validatePB);
}
function validateRunnerId(ID) {
var ID = document.getElementById('RunnerId').value;
var legalEntry = /^\d{1,5}?$/;
if (ID.length == 0) {
RunnerId.style.background = 'Orange';
error.style.color = 'red';
document.getElementById('error').innerHTML = "The RunnerId can\'t be empty";
return false;
}
else if (!legalEntry.test(ID)) {
RunnerId.style.background = 'Orange';
error.style.color = 'red';
document.getElementById('error').innerHTML = "The RunnerId must be a number from 1 to 99999";
return false;
}
else {
RunnerId.style.background = 'White';
document.getElementById('error').innerHTML = "";
return true;
}
}
function validateEventId(ID) {
var ID = document.getElementById('EventId').value;
var legalEntry = /^\d{1,5}?$/;
if (ID.length == 0) {
EventId.style.background = 'Orange';
error.style.color = 'red';
document.getElementById('error').innerHTML = "The EventId can\'t be empty";
return false;
}
else if (!legalEntry.test(ID)) {
EventId.style.background = 'Orange';
error.style.color = 'red';
document.getElementById('error').innerHTML = "The EventId must be a number from 1 to 99999";
return false;
}
else {
EventId.style.background = 'White';
document.getElementById('error').innerHTML = "";
return true;
}
}
function validateDate(ymd) {
var ymd = document.getElementById('When').value;
var legalEntry = /^[0-9]{4}-(0[1-9]|1[0-2])-(0[1-9]|[1-2][0-9]|3[0-1])$/;
if (ymd.length == 0) {
When.style.background = 'Orange';
error.style.color = 'red';
document.getElementById('error').innerHTML = "The date can\'t be empty";
return false;
}
else if (!legalEntry.test(ymd)) {
When.style.background = 'Orange';
error.style.color = 'red';
document.getElementById('error').innerHTML = "The date must be in format YYYY-MM-DD";
return false;
}
else {
When.style.background = 'White';
document.getElementById('error').innerHTML = "";
return true;
}
}
function validateTime(tm) {
var tm = document.getElementById('Time').value;
var legalEntry = /^\d\d\:[0-5][0-9]\:[0-5][0-9]$/
if (tm.length == 0) {
Time.style.background = 'Orange';
error.style.color = 'red';
document.getElementById('error').innerHTML = "The finish time can\'t be empty";
return false;
}
else if (!legalEntry.test(tm)) {
Time.style.background = 'Orange';
error.style.color = 'red';
document.getElementById('error').innerHTML = "The finish time must be in format HH:MM:SS";
return false;
}
else {
Time.style.background = 'White';
document.getElementById('error').innerHTML = "";
return true;
}
}
function validatePosition(pos) {
var pos = document.getElementById('Position').value;
var legalEntry = /^\d{1,5}?$/
if (pos.length == 0) {
Position.style.background = 'Orange';
error.style.color = 'red';
document.getElementById('error').innerHTML = "The position can\'t be empty";
return false;
}
else if (!legalEntry.test(pos)) {
Position.style.background = 'Orange';
error.style.color = 'red';
document.getElementById('error').innerHTML = "The position must be a number from 1 to 99999";
return false;
}
else {
Position.style.background = 'White';
document.getElementById('error').innerHTML = "";
return true;
}
}
function validateCategoryId(ID) {
var ID = document.getElementById('CategoryId').value;
var legalEntry = /^\d\d?[0]?$/;
if (ID.length == 0) {
CategoryId.style.background = 'Orange';
error.style.color = 'red';
document.getElementById('error').innerHTML = "The CategoryId can\'t be empty";
return false;
}
else if (!legalEntry.test(ID)) {
CategoryId.style.background = 'Orange';
error.style.color = 'red';
document.getElementById('error').innerHTML = "The CategoryId must be a number from 1 to 100";
return false;
}
else {
CategoryId.style.background = 'White';
document.getElementById('error').innerHTML = "";
return true;
}
}
function validateAge(agrade) {
var agrade = document.getElementById('Age').value;
var legalEntry = /^\d\d?\,?\d?\d?$/;
if (agrade.length == 0) {
Age.style.background = 'Orange';
error.style.color = 'red';
document.getElementById('error').innerHTML = "The age grade can\'t be empty";
return false;
}
else if (!legalEntry.test(agrade)) {
Age.style.background = 'Orange';
error.style.color = 'red';
document.getElementById('error').innerHTML = "The age grade must be decimal number of maximum 2 integers and 2 decimals";
return false;
}
else {
Age.style.background = 'White';
document.getElementById('error').innerHTML = "";
return true;
}
}
function validatePB(pbest) {
var pbest = document.getElementById('PB').value;
var legalEntry = /^(0|1)$/;
if (pbest.length == 0) {
pbest.value = "0";
}
else if (!legalEntry.test(pbest)) {
PB.style.background = 'Orange';
error.style.color = 'red';
document.getElementById('error').innerHTML = "The PB can only be 0 for false and 1 for true";
return false;
}
else {
PB.style.background = 'White';
document.getElementById('error').innerHTML = "";
return true;
}
}
在此先感谢您抽出宝贵时间来帮助这个新手:)
最佳答案
在此代码中：
function validateForm() {
return (validateRunnerId
&& validateEventId
&& validateDate
&& validateTime
&& validatePosition
&& validateCategoryId
&& validateAge
&& validatePB);
}
...您没有在调用函数，只是在引用它们。并且由于函数引用是真实的，因此该条件始终为真，并且该格式始终有效。
要调用函数，请在其后放置
()。假设您的函数不需要参数，那将是：function validateForm() {
return (validateRunnerId()
&& validateEventId()
&& validateDate()
&& validateTime()
&& validatePosition()
&& validateCategoryId()
&& validateAge()
&& validatePB());
}
但是，很难说出来，因为很多函数都声明了参数，但随后又声明了与变量相同的符号，这有点奇怪。