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I have ASP.Net code generating my button's HTML for me using divs to get it to look and behave how I want. This question is regarding the
HTML produced
by the ASP.Net code.
A standard button is easy, just set the onClick event of the div to change the page location:
<div name="mybutton" id="mybutton" class="customButton" onClick="javascript:document.location.href='wherever.html';">
Button Text
This works great, however, if I want a button like this to submit the form in which it resides, I would have imagined something like below:
<form action="whatever.html" method="post">
<div name="mysubmitbutton" id="mysubmitbutton" class="customButton" onClick="javascript:this.form.submit();">
Button Text
</form>
However, that does not work :( Does anyone have any sparkling ideas?
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this
in div onclick don't have attribute form
, you may try this.parentNode.submit()
or document.forms[0].submit()
will do
Also, onClick
, should be onclick
, some browsers don't work with onClick
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Are you aware of <button>
elements? <button>
elements can be styled just like <div>
elements and can have type="submit"
so they submit the form without javascript:
<form action="whatever.html" method="post">
<button name="mysubmitbutton" id="mysubmitbutton" type="submit" class="customButton">
Button Text
</button>
</form>
Using a <button>
is also more semantic, whereas <div>
is very generic. You get the following benefits for free:
JavaScript is not necessary to submit the form
Accessibility tools, e.g. screen readers, will (correctly) treat it as a button and not part of the normal text flow
<button type="submit">
becomes a "default" button, which means the return key will automatically submit the form. You can't do this with a <div>
, you'd have to add a separate keydown handler to the <form>
element.
There's one (non-) caveat: a <button>
can only have phrasing content, though it's unlikely anyone would need any other type of content when using the element to submit a form.
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To keep the scripting in one place rather than using onClick in the HTML tag, add the following code to your script block:
$('#id-of-the-button').click(function() {document.forms[0].submit()});
Which assumes you just have the one form on the page.
Non-JavaScript enabled clients won't be able to submit your form
The w3c specification does not allow nested forms in HTML - you'll potentially find that the action and method tags are ignored for this form in modern browsers, and that other ASP.NET controls no longer post-back correctly (as their form has been closed).
If you want it to be treated as a proper ASP.NET postback, you can call the methods supplied by the framework, namely __doPostBack(eventTarget, eventArgument)
:
<div name="mysubmitbutton" id="mysubmitbutton" class="customButton"
onclick="javascript:__doPostBack('<%=mysubmitbutton.ClientID %>', 'MyCustomArgument');">
Button Text
Why does everyone have to complicate things. Just use jQuery!
<script type="text/javascript">
$(document).ready(function() {
$('#divID').click(function(){
$('#formID').submit();
$('#submitID').hide();
</script>
<form name="whatever" method="post" action="somefile.php" id="formID">
<input type="hidden" name="test" value="somevalue" />
<input type="submit" name="submit" value="Submit" id="submitID" />
</form>
<div id="divID">Click Me to Submit</div>
The div doesn't even have to be in the form to submit it. The only thing that is missing here is the include of jquery.js.
Also, there is a Submit button that is hidden by jQuery, so if a non compatible browser is used, the submit button will show and allow the user to submit the form.
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