Submit a form based on the javascript event - javascript

What I want is to be able to submit a form when ever a user presses some key like tab or enter (i.e. that will case him to lose focus) also clicking outside of the text field should trigger a submit. However when ever he click on the cancel button it should prevent the submit ion
html structure look like this
<form id="form">
<input id="text" onblur="$(this).closest('form').submit();">
<a id"submit">submit</a>
<a id"cancel">cancel</a>
</form>
Currently what happens is that when a user presses enter a form is submitted twice and it should be submitted only once. When he presses a cancel a form is submitted and cancelled right after that.
Does anyone have any idea how can I write some javascript code that can accomplish this behaviour (the idea for is take form the jira in-line edit mode and I am trying to construct something in similar manner)

I'm going to provide you with another you could approach this by using jQuery and it's .change() event handler. This way when the user clicks off of the input element, it'll trigger the .change() event and you can submit a form within it's callback function. If the user cancels then you can handle that event normally, same with the submit button click.
The Form:
<form id="form">
<input id="text">
<a id="cancel">cancel</a>
<a id="submit">submit</a>
</form>
The Javascript (jQuery):
$(document).ready(function(){
$('#submit').click(function(e){
e.preventDefault();
//submit the form
console.log('form submitted by button click')
});
$('#cancel').click(function(e) {
e.preventDefault();
//close form?
console.log('cancelled form');
});
$('#text').change(function(){
//submit the form
console.log('form submitted, maybe hide form now?');
});
});
The jsFiddle.

Keep submit flag to prevent duplication on form submit. Something like that
<form id="form">
<input id="text" onblur="submitForm('form');">
<button onclick="submitForm('form');">submit</button>
<button type="cancel">cancel</button>
</form>
<script>
var submitFlag = {};
function submitForm(id){
if(!submitFlag[id]){
submitFlag[id] = true;
$('#' + id).submit();
} else {
// do nothing
// alert('Form already submitted');
return;
}
}
</script>

Related

Page seems to refresh when I submit an HTML form and the console is wiped [duplicate]

I'm creating a login form and in that if any input is wrong then i want to stay on the same page and notify the client to enter the correct input
I want to stay on this page http://localhost:8080/loginpage/ but after every click i'm redirected to http://localhost:8080/loginpage/?UserName=UserName&pword=&ConfirmPassword=&Email=Email&FirstName=First+Name&LastName=Last+Name&cars=male&Signup=Signup .
I have written a code for this but it does not seem to work.
if(t!==0)
{
var er="Email-id already exists";
window.location.reload(false);
document.getElementById("nemail").value=er;
document.getElementById("username").value=username;
document.getElementById("pword").value="";
document.getElementById("confpwd").value="";
document.getElementById("fname").value=fname;
document.getElementById("lname").value=lname;
document.getElementById("gender").value=gender;
}
I have tried to use several other methods like
window.location.replace('/loginpage/');
window.location.href="/loginpage/index.html";
But none of them works.
Please help!
There are two ways to prevent a form to submit.
Set form onsubmit="return false".
Register a submit event on a from. In the callback call event.preventDefault();
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<h2>1 way to prevent form to submit via onclick attribute</h2>
<form action="#submit-from-1-way" onsubmit="return validate(this)"><!--set onsubmit="return false"-->
<input name="value"/>
<button type="submit">Submit</button>
</form>
<h2>2 way to prevent form to submit via submit event</h2>
<form id="form" action="#submit-from-2-way"><!--set onsubmit="return false"-->
<input name="value"/>
<button type="submit">Submit</button>
</form>
<script>
console.log(location.href+'#'+location.hash+'?'+location.search);
function validate(form) {
return $(form).find('input').val();
}
$('#form').submit(function (e) {
if (!validate(this)) e.preventDefault();
});
</script>
You can use preventDefault() on the click event for a given html object. This will prevent the browser from taking the default action on a specific HTML object.
For example to prevent actoin on a link:
<body>
Click Me
<script>
function dontGo(event) {
event.preventDefault();
}
document.getElementById("clickMe").addEventListener("click",dontGo);
</script>
</body>

How to combine two buttons into one?

I have following two buttons:
<button type="submit" id="gform_submit_button_1">Submit</button>
<button type="button" data-is_quote="1" data-button="simple_add_to_quote" data-product-type="simple" data-product-id="75448" id="add_to_quote">Submit</button>
the #gform_submit_button_1 button validates form entries before submitting data to the server
and the #add_to_quote button submits form data without validating it
I want to be able to validate the form & submit it using the #add_to_quote button. Any solution?
Trigger click event of gform_submit_button_1 button on click of add_to_quote.
$("#add_to_quote").click(function() {
$("#gform_submit_button_1").click();
});
I'm not sure that I get the problem right, but here is a possible solution :
Create a form element with an hidden input containing all the data-X values and a submit button that submits the form.
<form method="GET/POST" action="validation.php">
<input type="hidden" name="data-validation" data-is_quote="1" data-button="simple_add_to_quote" data-product-type="simple" data-product-id="75448" id="add_to_quote">
<input type="submit" value="submit" id="add_to_quote">
</form>
I hope it will help !
#Dhara Parmar solution is fine... but is missing the event.stopPropagation() and event.preventDefault() like this:
$("#add_to_quote").click(function() {
$(this).preventDefault(); //to stop submit
$(this).stopPropagation();//to avoid the event bubbling up to other submit buttons, if any...
$("#gform_submit_button_1").click();
});
you can call the validation and submit functions of the form directly from the type=button click handler to make it behave like a type=submit
$("#add_to_quote").click(function () {
if (!$("#TheForm").validate()) { //native validation triggered
return false;
} else {
$("#TheForm").submit()
}
});

jQuery function not working on Form Submit

I saw from W3C example something like this. An action happens on form submit(an alert). However, when I tried with my own function here, my action doesn't happen (show hidden div). Goal is to show hidden div on form submit using 'GET' request. I am new to javascript/jQuery/ajax, but isn't jQuery supposed make call to server without refreshing page?
not working javascript:
$(document).ready(function(){
$("form").submit(function showDiv(){
document.getElementById("showMe").style.display = "block";
});
});
not working html:
<body>
<form action="" method="GET">
<input type="text" name="LastName" value="Mouse"><br>
<input type="submit" value="Submit">
</form>
<div id="showMe" style="display: none;">
<p>hey this should be hidden</p>
</div>
</body>
You need to cancel the form submit before executing your code:
$(document).ready(function(){
$("form").submit(function(e){
// At this point you'll want to have some type of flag to indicate whether you
// should allow the form submission to continue, or cancel the event. For example,
// it could be whether not showMe is visible (I don't know what you're going for).
e.preventDefault();
$("#showMe").css("display", "block");
// Submit form after your code runs (or whenever you want)
$("form").submit();
});
});
$(document).ready(function(){
$("form").submit(function(e){
e.preventDefault(); // this will prevent the submit
document.getElementById("showMe").style.display = "block";
});
});
Actually the jfiddle you posted is not blocking the form, it shows you an alert that block all js execution (browser behavior), if you select ok in the alert, the form goes through
the event.preventDefault() statement means: don't process anything outside this function
Try this:
$("form").submit(function(e){
e.preventDefault();
$("#showMe").show();
});
You need at least one form element (button or input), that has type "submit".
Then jQuery .submit() or .on('submit',..) will definitely work.

jQuery not preventing form from being submitted

I want to prevent a form from being submitted using jQuery and instead run a function when the user wants to submit.
Here's my forms markup:
<form action="" method="post" id="msg-form">
<p><textarea name="msg"></textarea><input type="submit" value="Send"></p>
</form>
And my Javascript code:
$('#msg-form').submit(function() {
return false;
}
However, when I press the submit button, the form still gets sent and the page refreshes. How can I properly prevent the form from submitting?
It seems the event handler is not even executed, thus I assume the form could not have been found. Try enclosing your code within handler executed when the DOM is ready. In jQuery it can be simply done like that:
$(function(){
$('#msg-form').submit(function(event) {
event.preventDefault();
// code executed when user tries to submit the form
});
});
Also, as you can see above, you can prevent default behaviour of the form when it is being submitted.
The submit event is not actually being bound to the form element. You may have forgotten to bind it after the DOM was loaded!
Put the event binding inside of $(document).ready(function() { or load the script at the bottom of the page (after all of the elements have loaded).
$('#msg-form').submit(function(e){
e.preventDefault();
});
You could not give the users a real submit button and only submit the form using JS after validation:
HTML
<form action="" method="post" id="msg-form">
<p><textarea name="msg"></textarea><input id="submit" type="button" value="Send"></p>
</form>
JS
$('#submit').on('click', function() {
// validate
$('#msg-form')[0].submit();
});
Try:
$("#msg-form").submit(function (e) {
e.preventDefault();
});
This works
<form action='' onsubmit="return false;">
As does this
<form action='' onsubmit="doSomeWork();return false;">

Simple function onSubmit?

I'm trying to call a simple function onsubmit. I tried using onsubmit and also a listener with jQuery. My problem is that when the user presses enter he gets redirected to mysite.com?
<form id="teleport">
<input id="tInput" type="text" value="Type a location" />
<input type="button" id="tSubmit" value="Submit"/>
</form>
$("#teleport").submit(function () {
teleport(document.getElementById('tInput').value);
});
How do I prevent anything from happening when submitting? Also .submit() is only detecting the enter key, how do I listen for both enter key and clicks on the submit button?
You need to prevent the default action of the form. You can do that with event.preventDefault():
$("#teleport").submit(function (e) {
e.preventDefault();
teleport(document.getElementById('tInput').value);
});
Alternatively, you could return false inside the submit event handler for the same effect.
The easiest way to make the button submit the form too will be to change it's type to submit:
<input type="submit" id="tSubmit" value="Submit" />
Or you could attach a click event handler to your current button and trigger the submit event of the form.
Prevent submiting a form:
$("#teleport").submit(function (e) {
teleport(document.getElementById('tInput').value);
e.preventDefault();
});
Submit event catches any way of submitting a form - both with clicking the submit button and enter key press.

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