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I'm trying to code a checkbox that must be checked in order for the "Submit" button on a form to be enabled. I first tried using a linked file to no avail; now even inserting the script doesn't seem to work. Can anyone help? The entire code for the page is posted below. Thanks in advance!
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
".dtd">
<html xmlns="" lang="en" xml:lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<link rel="stylesheet" type="text/css" href="stylesheet.css" />
<script type="text/javascript" src="includes/imagetransition.js"></script>
<script type="text/javascript" src="includes/checkenabledisable.js"></script>
<script type="text/javascript">
var checker = document.getElementById('acknowledgment');
var sendbtn = document.getElementById('submitmessage');
// when unchecked or checked, run the function
checker.onchange = function(){
if(this.checked){
sendbtn.disabled = false;
} else {
sendbtn.disabled = true;
}
}
</script>
<title>Contact Us</title>
</head>
<body>
<div class="page-wrapper">
<div id="header">
<img src="images/img1.jpg" name="slideshow" width="70%" height="200" alt="headerimage.gif"><br>
<a href="javascript:chgImg(-1)">Previous</a> |
<a href="javascript:auto()">Auto/Stop</a> |
<a href="javascript:chgImg(1)">Next</a></div>
<br><br>
<aside class="sidebar">
<div id="vmenu">
<ul>
<li class="sideli"><a href="main.html.php">Home</a></li>
<li class="sideli"><a href="areas.html.php">Areas</a></li>
<li class="sideli"><a href="profiles.html.php">Profiles</a></li>
<li class="sideli"><a href="contactus.html.php">Contact Us</a></li>
</ul>
</div>
</aside>
<section class="main">
We will review your submission and contact you, usually within 72 hours.</p>
<form action="actionemail.php" method="post">
<table class="emailtable">
<tr><td><label for="name" class="emaillabel">Name: </label></td><td><input type="text" name="fullname" size="50" value="Name" style="width: 290px;" /></td></tr>
<tr><td><label for="phone" class="emaillabel">Phone: </label></td><td><input type="text" name="phone" size="20" value="Phone" style="width: 290px;" /></td></tr>
<tr><td><label for="email" class="emaillabel">Email: </label></td><td><input type="text" name="email" size="50" value="Email" style="width: 290px;" /></td></tr>
<tr><td><label for="ment" class="emaillabel">Issue: </label></td><td><textarea rows="3" cols="26" name="ment" value="Tell Us More" style="width: 290px; height: 55px"></textarea></td></tr>
</table><br>
<input id="acknowledgment" type="checkbox" name="acknowledgment" value="1" /><label for="acknowledgment">I acknowledge that there may be a delay in responding to this request.</label><br>
<br><input id="submitmessage" type="submit" name ="submitmessage" value="Send Email" disabled />
</form>
</section>
</div>
</body>
</html>
I'm trying to code a checkbox that must be checked in order for the "Submit" button on a form to be enabled. I first tried using a linked file to no avail; now even inserting the script doesn't seem to work. Can anyone help? The entire code for the page is posted below. Thanks in advance!
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3/1999/xhtml" lang="en" xml:lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<link rel="stylesheet" type="text/css" href="stylesheet.css" />
<script type="text/javascript" src="includes/imagetransition.js"></script>
<script type="text/javascript" src="includes/checkenabledisable.js"></script>
<script type="text/javascript">
var checker = document.getElementById('acknowledgment');
var sendbtn = document.getElementById('submitmessage');
// when unchecked or checked, run the function
checker.onchange = function(){
if(this.checked){
sendbtn.disabled = false;
} else {
sendbtn.disabled = true;
}
}
</script>
<title>Contact Us</title>
</head>
<body>
<div class="page-wrapper">
<div id="header">
<img src="images/img1.jpg" name="slideshow" width="70%" height="200" alt="headerimage.gif"><br>
<a href="javascript:chgImg(-1)">Previous</a> |
<a href="javascript:auto()">Auto/Stop</a> |
<a href="javascript:chgImg(1)">Next</a></div>
<br><br>
<aside class="sidebar">
<div id="vmenu">
<ul>
<li class="sideli"><a href="main.html.php">Home</a></li>
<li class="sideli"><a href="areas.html.php">Areas</a></li>
<li class="sideli"><a href="profiles.html.php">Profiles</a></li>
<li class="sideli"><a href="contactus.html.php">Contact Us</a></li>
</ul>
</div>
</aside>
<section class="main">
We will review your submission and contact you, usually within 72 hours.</p>
<form action="actionemail.php" method="post">
<table class="emailtable">
<tr><td><label for="name" class="emaillabel">Name: </label></td><td><input type="text" name="fullname" size="50" value="Name" style="width: 290px;" /></td></tr>
<tr><td><label for="phone" class="emaillabel">Phone: </label></td><td><input type="text" name="phone" size="20" value="Phone" style="width: 290px;" /></td></tr>
<tr><td><label for="email" class="emaillabel">Email: </label></td><td><input type="text" name="email" size="50" value="Email" style="width: 290px;" /></td></tr>
<tr><td><label for="ment" class="emaillabel">Issue: </label></td><td><textarea rows="3" cols="26" name="ment" value="Tell Us More" style="width: 290px; height: 55px"></textarea></td></tr>
</table><br>
<input id="acknowledgment" type="checkbox" name="acknowledgment" value="1" /><label for="acknowledgment">I acknowledge that there may be a delay in responding to this request.</label><br>
<br><input id="submitmessage" type="submit" name ="submitmessage" value="Send Email" disabled />
</form>
</section>
</div>
</body>
</html>
- sidenote: remend to use HTML5 DOCTYPE. – Raptor Commented Oct 7, 2013 at 4:17
- 1 PHP has nothing to do with your problem. PHP runs server-side, and JavaScript runs client-side (in your case). – Brad Commented Oct 7, 2013 at 4:19
- Your code is running without any problems on my server. I suspect it's one of the JS libraries you're loading that's causing a conflict? – Lloyd Banks Commented Oct 7, 2013 at 4:34
3 Answers
Reset to default 2Your function is not "listening" for an onchange event.
Use this instead. Notice I changed the checkbox to have an onclick event.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3/1999/xhtml" lang="en" xml:lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<link rel="stylesheet" type="text/css" href="stylesheet.css" />
<script type="text/javascript" src="includes/imagetransition.js"></script>
<script type="text/javascript" src="includes/checkenabledisable.js"></script>
<script type="text/javascript">
function enableSubmitButton() {
if (document.getElementById("acknowledgment").checked == true)
document.getElementById("submitmessage").disabled = false;
}
</script>
<title>Contact Us</title>
</head>
<body>
<div class="page-wrapper">
<div id="header">
<img src="images/img1.jpg" name="slideshow" width="70%" height="200" alt="headerimage.gif"><br>
<a href="javascript:chgImg(-1)">Previous</a> |
<a href="javascript:auto()">Auto/Stop</a> |
<a href="javascript:chgImg(1)">Next</a></div>
<br><br>
<aside class="sidebar">
<div id="vmenu">
<ul>
<li class="sideli"><a href="main.html.php">Home</a></li>
<li class="sideli"><a href="areas.html.php">Areas</a></li>
<li class="sideli"><a href="profiles.html.php">Profiles</a></li>
<li class="sideli"><a href="contactus.html.php">Contact Us</a></li>
</ul>
</div>
</aside>
<section class="main">
We will review your submission and contact you, usually within 72 hours.</p>
<form action="actionemail.php" method="post">
<table class="emailtable">
<tr><td><label for="name" class="emaillabel">Name: </label></td><td><input type="text" name="fullname" size="50" value="Name" style="width: 290px;" /></td></tr>
<tr><td><label for="phone" class="emaillabel">Phone: </label></td><td><input type="text" name="phone" size="20" value="Phone" style="width: 290px;" /></td></tr>
<tr><td><label for="email" class="emaillabel">Email: </label></td><td><input type="text" name="email" size="50" value="Email" style="width: 290px;" /></td></tr>
<tr><td><label for="ment" class="emaillabel">Issue: </label></td><td><textarea rows="3" cols="26" name="ment" value="Tell Us More" style="width: 290px; height: 55px"></textarea></td></tr>
</table><br>
<input id="acknowledgment" type="checkbox" name="acknowledgment" value="1" onclick="enableSubmitButton()"><label for="acknowledgment">I acknowledge that there may be a delay in responding to this request.</label><br>
<br><input id="submitmessage" type="submit" name ="submitmessage" value="Send Email" disabled />
</form>
</section>
</div>
</body>
</html>
You should place the javascript below the definition of the items. HTML is interpreted linearly. This means that the Javascript is executed in the beginning when no items is known as "acknowledgement"
put some function name inside a script
<script type="text/javascript">
function checker()
{
var checker = document.getElementById('acknowledgment');
var sendbtn = document.getElementById('submitmessage');
// when unchecked or checked, run the function
checker.onchange = function(){
if(this.checked){
sendbtn.disabled = false;
} else {
sendbtn.disabled = true;
}
}
}
</script>
and then you will call function in button onClick event
<form action="actionemail.php" method="post">
<br><input id="submitmessage" type="submit" name ="submitmessage" value="Send Email" disabled onclick="checker();"/>
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