javascript function call for single form

javascript function call for single form - javascript

I have multiple forms in my php file for different buttons. So, if I click on Back button, ramesh.php script should be called and so on. This is the code.
<form action="ramesh.php">
<input type="submit" value="Back" />
</form>
<form action="process.php" method="post">
<input name="rep_skyline" type="text" />
<input type="submit" />
</form>
<form action="update.php" method="post" >
<button type="submit">Update</button>
</form>
However, I need to pass some data to server from my client side on form submit just for the update button. I have a javascript function to send the data to server side as below.
<script type="text/javascript">
$(document).ready(function() {
$('form').submit(function(e) {
var mydata = 3;
if ($(this).is(':not([data-submit="true"])'))
{
$('form').append('<input type="hidden" name="foo" value="'+mydata+'">');
$('form').data('submit', 'true').submit();
e.preventDefault();
return false;
}
})
})
</script>
If I click on the update button, the javascript function is working fine. However, if I click on Back or Submit button, I should not be calling the javascript function. Is there someway to do this?

Give your form an id:
<form action="update.php" method="post" id="update-form">
Then use a more specific selector:
$("#update-form").submit(function() {
// Code
});
I'm not quite sure why you need JavaScript to dynamically add data to your form, however. You should just use an <input type="hidden" /> directly.

type=submit will always load the form's action. Try to specify wich form to submit.
<form name="backForm" id="backForm" action="ramesh.php">
<input type="submit" value="Back" />
</form>
<form name="form2" id="form2" action="process.php" method="post">
<input name="rep_skyline" type="text" />
<input type="submit" />
</form>
Now you can access the form via document.backForm or document.getElementById("backForm") and than use submit(); like document.getElementById("backForm").submit();

Related

How to run form action and click event simultaneously on button click

I am having a form like this
<form name="test" action="action.php" method="get">
<input type="text" />
<input type="button" value="download"/></form>
I need a click event for download button. Eg. If i click download it should submit as action.php and run $('#button').click(function(){ also. How can I do it.

Perform the operation on 'download' button click then trigger the form submit using trigger
$('.download').click(function(e){
alert('downloading!') //Your Download Logic HERE
$(this).parent().trigger('submit')//Trigger Form SUBMIT ONCE THE OPERATION IS DONE
})
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<form name="test" action="action.php" method="get">
<input type="text" />
<input type="button" value="download" class="download"></form>

Firstly note that <form> elements are not self closing, so your current HTML is invalid; the input elements need to be within the form itself.
Once that is fixed you can trigger() a submit event on the parent form to the #button element, like this:
$('#button').click(function() {
console.log('Custom logic here...');
$(this).closest('form').trigger('submit');
});
$('form').on('submit', function(e) {
e.preventDefault();
console.log('Submitting form...');
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<form name="test" action="action.php" method="get">
<input type="text" />
<input type="submit" value="search" />
<input type="button" value="download" id="button" />
</form>

You can simply submit your form by javascript, after clicking download button:
$('#button').click(function(){
...
document.forms["myform"].submit();

Call a javascript function before action in html Form

Can I intercept a form submit action and do some JavaScript function before sending it to post/get?
For example:
<form action="something.php" method="post">
<input type="text" value="Some data"/>
<input ... ... ... />
<input type="submit" value="Send"/>
</form>
Is there a way I can call a JavaScript function before calling action when I click the submit button?
javascriptFunction();
//now go to form action...

<form action="something.php" method="post" onsubmit="return myFunction()">
<input type="text" value="Some data"/>
<input ... ... ... />
<input type="submit" value="Send"/>
<script type="text/javascript">
function myFunction(){
//do something here
//if you want to submit form
return true;
//if don't want to submit
return false;
}
</script>

Try to add an onclick event to the button
onclick="yourfunction()"
and submit the form at the end of the function
document.getElementById("yourform").submit()

Javascript Html button

I currently have a button in HTML with the following code:
<form id="tfnewsearch" method="get" >
<input type="text" id="search_query" name="q" size="21" maxlength="120"><input type="button" id="search_button" name="search" value = "Search"onclick="doSearch(this.form.q)">
</form>
The function 'doSearch()' works only if I click the submit button. What changes do I have to do if it has to work even if I just press the Enter key?

<form id="tfnewsearch" method="get" onsubmit="doSearch()" >
Simply change the onclick to an onsubmit and attach it to your form!

The proper way it to move it to simple JS script
<script type="text/javascript">
var form = document.querySelector('#tfnewsearch'),
query = form.querySelector('[name="q"]');
form.addEventListener('submit', function(){
doSearch(query.value);
});
</script>

use js functions return value for html form action attribute

I want to use the return value of a JS function as the URL for a form get action. Is it possible or do I need to set the form attributes with a function call in the onSubmit attribute?
edit: this is basically what i want to do
<div class="search">
<form method="get" action="https://duckduckgo.com/" id="search-form">
<input id="searchbar" type="text" name="q" size="31" maxlength="255" value="" autofocus="autofocus"/>
</form>
<script type="text/javascript">
document.getElementById("search-form").action = "bang()";
</script>
</div>
the bang function is an implementation of the bang system from DDG in JS, so i can easily add bangs to a searchbox in my webpage.

You can use the onsubmit event for the form to set the action before the actual submit happens.
<form id="testForm" methods="get" action="#" onsubmit="setFormUrl()">
Search: <input type="text" name="q" />
<input type="submit" value="Go" />
</form>
function bang()
{
return "http://www.google.com";
}
function setFormUrl()
{
var url = bang();
document.getElementById('testForm').setAttribute('action', url);
}

HTML form with two submit buttons and two "target" attributes

I have one HTML <form>.
The form has only one action="" attribute.
However I wish to have two different target="" attributes, depending on which button you click to submit the form. This is probably some fancy JavaScript code, but I haven't an idea where to begin.
How could I create two buttons, each submitting the same form, but each button gives the form a different target?

I do this on the server-side.
That is, the form always submits to the same target, but I've got a server-side script who is responsible for redirecting to the appropriate location depending on what button was pressed.
If you have multiple buttons, such as
<form action="mypage" method="get">
<input type="submit" name="retry" value="Retry" />
<input type="submit" name="abort" value="Abort" />
</form>
Note: I used GET, but it works for POST too
Then you can easily determine which button was pressed - if the variable retry exists and has a value then retry was pressed, and if the variable abort exists and has a value then abort was pressed. This knowledge can then be used to redirect to the appropriate place.
This method needs no Javascript.
Note: This question and answer was from so many years ago when "wanting to avoid relying on Javascript" was more of a thing than it is today. Today I would not consider writing extra server-side functionality for something like this. Indeed, I think that in most instances where I would need to submit form data to more than one target, I'd probably be doing something that justified doing a lot of the logic client-side in Javascript and using XMLHttpRequest (or indeed, the Fetch API) instead.

It is more appropriate to approach this problem with the mentality that a form will have a default action tied to one submit button, and then an alternative action bound to a plain button. The difference here is that whichever one goes under the submit will be the one used when a user submits the form by pressing enter, while the other one will only be fired when a user explicitly clicks on the button.
Anyhow, with that in mind, this should do it:
<form id='myform' action='jquery.php' method='GET'>
<input type='submit' id='btn1' value='Normal Submit'>
<input type='button' id='btn2' value='New Window'>
</form>
With this javascript:
var form = document.getElementById('myform');
form.onsubmit = function() {
form.target = '_self';
};
document.getElementById('btn2').onclick = function() {
form.target = '_blank';
form.submit();
}
Approaches that bind code to the submit button's click event will not work on IE.

In case you are up to HTML5, you can just use the attribute formaction. This allows you to have a different form action for each button.
<!DOCTYPE html>
<html>
<body>
<form>
<input type="submit" formaction="firsttarget.php" value="Submit to first" />
<input type="submit" formaction="secondtarget.php" value="Submit to second" />
</form>
</body>
</html>

This works for me:
<input type='submit' name='self' value='This window' onclick='this.form.target="_self";' />
<input type='submit' name='blank' value='New window' onclick='this.form.target="_blank";' />

In this example, taken from
http://www.webdeveloper.com/forum/showthread.php?t=75170
You can see the way to change the target on the button OnClick event.
function subm(f,newtarget)
{
document.myform.target = newtarget ;
f.submit();
}
<FORM name="myform" method="post" action="" target="" >
<INPUT type="button" name="Submit" value="Submit" onclick="subm(this.form,'_self');">
<INPUT type="button" name="Submit" value="Submit" onclick="subm(this.form,'_blank');">

Simple and easy to understand, this will send the name of the button that has been clicked, then will branch off to do whatever you want. This can reduce the need for two targets. Less pages...!
<form action="twosubmits.php" medthod ="post">
<input type = "text" name="text1">
<input type="submit" name="scheduled" value="Schedule Emails">
<input type="submit" name="single" value="Email Now">
</form>
twosubmits.php
<?php
if (empty($_POST['scheduled'])) {
// do whatever or collect values needed
die("You pressed single");
}
if (empty($_POST['single'])) {
// do whatever or collect values needed
die("you pressed scheduled");
}
?>

Example:
<input
type="submit"
onclick="this.form.action='new_target.php?do=alternative_submit'"
value="Alternative Save"
/>
Voila.
Very "fancy", three word JavaScript!

Here's a quick example script that displays a form that changes the target type:
<script type="text/javascript">
function myTarget(form) {
for (i = 0; i < form.target_type.length; i++) {
if (form.target_type[i].checked)
val = form.target_type[i].value;
}
form.target = val;
return true;
}
</script>
<form action="" onSubmit="return myTarget(this);">
<input type="radio" name="target_type" value="_self" checked /> Self <br/>
<input type="radio" name="target_type" value="_blank" /> Blank <br/>
<input type="submit">
</form>

HTML:
<form method="get">
<input type="text" name="id" value="123"/>
<input type="submit" name="action" value="add"/>
<input type="submit" name="action" value="delete"/>
</form>
JS:
$('form').submit(function(ev){
ev.preventDefault();
console.log('clicked',ev.originalEvent,ev.originalEvent.explicitOriginalTarget)
})
http://jsfiddle.net/arzo/unhc3/

<form id='myForm'>
<input type="button" name="first_btn" id="first_btn">
<input type="button" name="second_btn" id="second_btn">
</form>
<script>
$('#first_btn').click(function(){
var form = document.getElementById("myForm")
form.action = "https://foo.com";
form.submit();
});
$('#second_btn').click(function(){
var form = document.getElementById("myForm")
form.action = "http://bar.com";
form.submit();
});
</script>

It is do-able on the server side.
<button type="submit" name="signin" value="email_signin" action="/signin">Sign In</button>
<button type="submit" name="signin" value="facebook_signin" action="/facebook_login">Facebook</button>
and in my node server side script
app.post('/', function(req, res) {
if(req.body.signin == "email_signin"){
function(email_login) {...}
}
if(req.body.signin == "fb_signin"){
function(fb_login) {...}
}
});

Have both buttons submit to the current page and then add this code at the top:
<?php
if(isset($_GET['firstButtonName'])
header("Location: first-target.php?var1={$_GET['var1']}&var2={$_GET['var2']}");
if(isset($_GET['secondButtonName'])
header("Location: second-target.php?var1={$_GET['var1']}&var2={$_GET['var2']}");
?>
It could also be done using $_SESSION if you don't want them to see the variables.

Alternate Solution. Don't get messed up with onclick,buttons,server side and all.Just create a new form with different action like this.
<form method=post name=main onsubmit="return validate()" action="scale_test.html">
<input type=checkbox value="AC Hi-Side Pressure">AC Hi-Side Pressure<br>
<input type=checkbox value="Engine_Speed">Engine Speed<br>
<input type=submit value="Linear Scale" />
</form>
<form method=post name=main1 onsubmit="return v()" action=scale_log.html>
<input type=submit name=log id=log value="Log Scale">
</form>
Now in Javascript you can get all the elements of main form in v() with the help of getElementsByTagName(). To know whether the checkbox is checked or not
function v(){
var check = document.getElementsByTagName("input");
for (var i=0; i < check.length; i++) {
if (check[i].type == 'checkbox') {
if (check[i].checked == true) {
x[i]=check[i].value
}
}
}
console.log(x);
}

This might help someone:
Use the formtarget attribute
<html>
<body>
<form>
<!--submit on a new window-->
<input type="submit" formatarget="_blank" value="Submit to first" />
<!--submit on the same window-->
<input type="submit" formaction="_self" value="Submit to second" />
</form>
</body>
</html>

On each of your buttons you could have the following;
<input type="button" name="newWin" onclick="frmSubmitSameWin();">
<input type="button" name="SameWin" onclick="frmSubmitNewWin();">
Then have a few small js functions;
<script type="text/javascript">
function frmSubmitSameWin() {
form.target = '';
form.submit();
}
function frmSubmitNewWin() {
form.target = '_blank';
form.submit();
}
</script>
That should do the trick.

e.submitEvent.originalEvent.submitter.value
if you use event of form

We Keep Coding

JavaScript is the programming language of the Web.

javascript function call for single form - javascript

Related

How to run form action and click event simultaneously on button click

Call a javascript function before action in html Form

Javascript Html button

use js functions return value for html form action attribute

HTML form with two submit buttons and two "target" attributes

Categories

Resources