Develop Reference

Submit form only when submit button clicked and prevent "Enter" submitting form

I want to stop a user submitting a form upon clicking enter.
This works for that
$(document).ready(function() {
$(window).keydown(function(event){
if(event.keyCode == 13) {
event.preventDefault();
return false;
}
});
});
However I have other buttons on the page that when I tab to and click enter to avail of their functionality, this is blocked via this function.
The button sits as so:
<input type='button' tabindex="29" value='Add Additional Drug' id='addButton'>
And I only want to submit the form when enter pressed while my submit button is selected.
<input type="submit" name="submit" value="Submit" tabindex="40" class="submit"/>
How would I do this?
EDIT
I see the answer in the attached Stackoverflow but he allow people to press Enter if they have completed all the fields:
I don't want a user to press Enter unless they have a button selected(i.e. Can't press Enter, tab to button, can press enter, which will trigger the button to do its functionality and not submit the form.
The form works on a Tabbing basis, so a user will tab over all the fields.

Binding the keydown event to the whole document will affect all inputs and forms on the page, you may have several ones in your page so it will mess up the whole page logic.
You can bind it to a specific form instead:
$("#myForm input").not("#addButton").keydown(function(event) {
if (event.keyCode == 13) {
event.preventDefault();
return false;
}
});
Demo:
$("#myForm input").not("#addButton").keydown(function(event) {
if (event.keyCode == 13) {
event.preventDefault();
return false;
}
});
form input {
display: block;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form action="" id="myForm">
<input type="text" name="input1" />
<input type="text" name="input2" />
<input type="text" name="input3" />
<input type="submit" name="submit" value="Submit" tabindex="3" class="submit" />
</form>
Note:
I used #myForm as test id here to target a specific form in the
page, you just need to use your form id.
Using jQuery .not() method in .not("#addButton") won't affect the button with id="addButton".

First, keep in mind that what you are attempting breaks UI accessibility standards.
Bearing this in mind, you'll need to stop using a true "submit" button and use a regular button that impersonates the submit button.
Next, you'll need to manually trigger the click events for all non-submit button buttons via code.
Here's a working example. See the comments for details:
$(document).ready(function() {
$(window).on("keydown", function(event){
// Check to see if ENTER was pressed and the submit button was active or not
if(event.keyCode === 13 && event.target === document.getElementById("btnSubmit")) {
// It was, so submit the form
document.querySelector("form").submit();
} else if(event.keyCode === 13 && event.target !== document.getElementById("btnSubmit") ){
// ENTER was pressed, but not while the submit button was active
alert("Enter pressed on something other than submit button.");
// Cancel form's submit event
event.preventDefault();
// Invoke click event of target so that non-form submit behaviors will work
event.target.click();
// Tell JQuery to cancel the event
return false;
}
});
// Non-submit button event handling
$("#btnOther").on("click", function(){
alert("Other button clicked!");
});
// Set up your "regular" button to act as a "submit" button when it is clicked
$("#btnSubmit").on("click", function(){
// Submit the form
document.querySelector("form").submit();
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form action=# method=post>
<input name=test>
<input type=button id="btnOther" value="Other Button">
<input type=button id="btnSubmit" value=Submit>
</form>

Enter key doesn't activate button

I have a form with one field that the user needs to type into, and a button underneath that when clicked, does some jQuery and hides the login-form. But when I hit enter after typing something in, the page refreshes...
There's part of me that thinks it doesn't need to be an <input> or a <form>
I don't actually need to post anything. I have tried changing the input to a <button> which completely ruins my styling and still doesn't work. What's the best way of getting round this?
<div class="login-page">
<div class="form">
<form class="login-form" method="POST">
<!-- user inputs -->
<p class="phc">PHC:</p><input type="text" id="username" placeholder="Enter Your PHC Here" />
<!-- your submit button -->
<input class="login" type="button" id="submit" value="login">
</div>

True, Adam. If the form does not contain the type submit button, a keypress event has to be added manually. Otherwise Enter will act as the Accept Button on the form.

You need to attach keypress event to the form or at least the field. For convenience, you also need to combine the callback functions into one.
$('#username').on('keypress', function(event){
var code = event.keyCode || event.which;
if(code == 13){
// submit the form.
}
});
$('#username').on('keypress', function(event){
var code = event.keyCode || event.which;
if(code == 13){
console.log('Submitting form');
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form class="login-form" method="POST">
<p class="phc">PHC:</p><input type="text" id="username" placeholder="Enter Your PHC Here" />
<input class="login" type="button" id="submit" value="login">
</form>

If the enter key is pressed when focused to an input field inside a form that has a submit button, the default browser behaviour is to fire a submit event on that form. You can prevent this happening by either:
return false;
or
e.preventDefault();
Full code:
$('.login-form').on('submit', function() {
return false;
});
Fiddle: https://jsfiddle.net/nc1e2gm6/
Bear in mind that if you go down the route of using e.preventDefault(); instead or return false;, you need to pass the e variable from the function call, like:
$('.login-form').on('submit', function(e) { ...

Don't think i explained it very well but i have fixed it, the enter key now activates the submit button rather than refresh the page.
$("form").submit(function() { return false; });
$(document).ready(function(){
$('#username').keypress(function(e){
if(e.keyCode==13)
$('#submit').click();
});
});

Two Events Fired when I press enter key

In my code, I have the following javascript code block in the header section
function validateForm(bid) {
switch (bid) {
case "submitIDSearch":
alert("submitIDSearch");
return false;
case "submitNameSearch":
alert("submitNameSearch");
return false;
}
}
function fKeyDown(e) {
var kc = window.event ? window.event.keyCode : e.which;
if (kc == 13) {
document.getElementById('submitNameSearch').click();
}
}
Then I have the following HTML code block
<form name="checkAbsenceForm" method="post" action="absenceReport.htm" onsubmit="return validateForm(this.submited)">
<label class="q">ID * <input id="searchRUID" name="searchID" maxlength="9" /></label>
<input id="submitIDSearch" type="submit" value="Search ID" onclick="this.form.submited = this.id;" />
<hr />
<label class="q">First Name <input id="searchFirstName" name="searchFirstName" maxlength="23" onKeyDown="javascript:fKeyDown(event);"/></label>
<br />
<label class="q">Last Name * <input id="searchLastName" name="searchLastName" maxlength="23" onKeyDown="javascript:fKeyDown(event);" /></label>
<input id="submitNameSearch" type="submit" value="Search Name" onclick="this.form.submited = this.id;" />
</form>
What happened was that when I press Enter key in the searchLastName input text box, both alert message box pops up. One showing submitNameSearch and the other showing submitIDSearch. submitNameSearch is the desired event, but submitIDSearch is not, I think it is somehow triggered by default.
May I ask if there's a way to get rid of the submitIDSearch event when I press Enter key in the searchLastName input text box?
Thanks a lot!

When you press Enter in a form, the form is submitted. That's the reason of the second call to validateForm.
Two solutions :
1) Remove the onKeyDown="javascript:fKeyDown(event);" to have the normal validation defined on onsubmit=... apply.
2) In fKeyDown, add e.preventDefault(); to prevent the default handling of the key event :
function fKeyDown(e) {
var kc = window.event ? window.event.keyCode : e.which;
if (kc == 13) {
document.getElementById('submitNameSearch').click();
e.preventDefault();
}
}
But if you really do just this in fKeyDown, solution 1 is enough.

Javascript: enter in input element with strange behaviour on firefox

I have a html form with a select, button and an input element.
<form action="">
<button>innocent button</button>
<select multiple name="multiple">
<option selected value="a">A</option>
<option value="b">B</option>
</select>
<input style="width:300px" type="text" value="press here enter and look at the multiple select" name="" />
</form>
and some jquery javascript
$(document).ready(function(){
console.log('hi');
var $button = $('button');
$button.on('click',function(e){
$('select option').first().attr('selected',false);
e.preventDefault();
});
Demo: try it here:
http://jsfiddle.net/3Rjdh/
On Chrome everything is okay.
But on Firefox:
If you press ENTER in the input field, the select element loses it's selected.
What is wrong with Firefox?

When you press enter on the input, you are effectively firing the click event of the button, trying putting a conole.log in there and you'd see it fire
You can stop the submission by doing something this
function stopSubmit(e){
e = e || event;
return (e.keyCode || event.which || event.charCode || 0) !== 13;
}
Then in your form add the event for keypress
<form onkeypress="return stopSubmit(event)">
See the updated fiddle

I think, I fixed it by adding the attribute type with value button
http://jsfiddle.net/3Rjdh/2/

Controlling ENTER key

How can we make a form in a page doesn't submit on pressing Enter — rather. it does the same work as pressing a particular button or icon or image?
Here are the contents of my form:
<input type="text" id="txt" /><input type="button" value="search"
onclick="searchresult()" />
The problem is that if I press Enter, the form submits and text field clears itself but the function searchresult() doesn't show its effect. When only pressing the button, it works well.

HTML
<input type="text" id="txt"/>
<input type="button" value="search"/>
jQuery
$('input[type=text]').on('keyup', function(e) {
if(e.which == 13) { // 13 is keycode for enter
e.preventDefault();
}
})
You can also bind to submit() like following
$('form').submit(function(e) { // instead of only `form`,
// use with `id` or `class` combination
if(e.which == 13) {
e.preventDefault();
}
});
Remainder
Don't forget to place you code within
$(document).ready(function() {
// your code
});
in short
$(function() {
// your code
});

Alternatively, instead of disabling the enter key, you might be able to bind to the onsubmit event to perform any processing prior to submitting the form. From the MDN documentation:
The submit event is raised when the user clicks a submit button in a form ().

Try:
$('form').submit(function(event){
if(!$(':focus',this).is(':button'))
event.preventDefault();
});
This attaches to the form itself. If it was submitted any way other that clicking the submit button it halts the submission process. For better performance narrow down the 'form' selector.

Try this:
form
<form id="myForm">
<input type="text" id="txt" />
<input type="submit" value="search" />
</form>
js
<script>
$(document).ready(function(){
$("#myForm").submit(function(e){
e.preventDefault();
searchresult();
});
});
</script>