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How to get input data from html to nodejs [duplicate]

When I submit form by using below function it is submitting but values are not passed through this function. I use all functions but nothing found:
document.getElementById("postad").submit();
Form is given below.
<form action="register.php" id="postad" method="post">
<input class="textfield2" type="text" id="post_title" style="width:640px;" placeholder="Ad Title" onBlur="check('post_title')" />
<input class="button" type="button" name="save" value="Publish" onclick="send();" />
</form>

Your form contains two form controls. Neither will be a successful control (i.e. one that appears in the submitted data), but for different reasons.
Only form controls with name attributes can be successful. Your text input doesn't have a name. (It also doesn't have a default value, so you need to type in it first).
Buttons can only be successful if they are the submit button used to submit the form. Your button isn't a submit button and you use JavaScript to submit the form.

There is no name attribute in your input text fields
<input name="post_title" class="textfield2" type="text" id="post_title" style="width:640px;" placeholder="Ad Title" onBlur="check('post_title')" />
.........^

Form submit behavior with nested forms in angularJs

<form name="v" ng-submit="submit()" ng-controller="ExampleController">
Enter text and hit enter OUTER FORM:
<input type="text" ng-model="text" name="texta" />
<input type="submit" id="submit" value="Submit" />
<pre>list={{list}}</pre>
<form name="x" ng-submit="submitInner()">
Enter text and hit enter INNER FORM:
<input type="text" ng-model="textInner" name="text" />
<input type="submit" id="submits" value="Submit" />
<pre>lists={{listInner}}</pre>
</form>
</form>
example : Plnkr
I have an angular form inside a form. When I select inner field and hit enter, the outer form submit action is called.
I am expecting it to call the inner form submit action
Am I expecting wrong, if yes why? and how to achieve the intended behavior
Below is from angular doc(https://docs.angularjs.org/api/ng/directive/form):
If a form has only one input field then hitting enter in this field triggers form submit (ngSubmit)
if a form has 2+ input fields and no buttons or input[type=submit] then hitting enter doesn't trigger submit
if a form has one or more input fields and one or more buttons or input[type=submit] then hitting enter in any of the input fields will
trigger the click handler on the first button or input[type=submit]
(ngClick) and a submit handler on the enclosing form (ngSubmit)

Nested forms are not allowed per HTML standards, but you could make it working using ng-form directive instead of form element.
For having nested form you need to replace all the inner form's with ng-form and those form which are trans-piled to ng-form would no longer support ng-submit event. You should add those form method on ng-click of button & also change input type from type="submit" to type=button"".
Markup
<form name="v" ng-submit="submit()" ng-controller="ExampleController">
Enter text and hit enter OUTER FORM:
<input type="text" ng-model="text" name="texta" />
<input type="submit" id="submit" value="Submit" />
<pre>list={{list}}</pre>
<ng-form name="x">
Enter text and hit enter INNER FORM:
<input type="text" ng-model="textInner" name="text" />
<input type="button" id="submits" value="Submit" ng-click="submitInner()"/>
<pre>lists={{listInner}}</pre>
</ng-form>
</form>
Plunkr Here

populating a field value based on the button clicked

I have a html form with a hidden field and 2 submit buttons. Based on what button in clicked ( trial or buy) I need to set the promo code field ( with "trial" as promo code for trial button and "buy "as promo code for buy button.
I am not sure how I could read what button is clicked in java script. I have a java script already in place that is copying email ID into another field on hitting submit. I'd like integrate the java script with existing one.
HTML code:
<form>Email:
<input type="text" name="email">
<br>
</label><input type ="hidden" name="retype-email">
<br>
<input type="hidden" name="PromoCode" value="" method="post">
<input class="Orange_button" type="submit" value="Start my free trial">
<input class="green_button" type="submit" value="Buy it now">
</form>
JS Fiddle: http://jsfiddle.net/x1bdgvyt/3/

It looks like the best solution is to manually track which button was clicked by subscribing to their "click" events.
Working Example here (jsFiddle)
HTML
<form>Email:
<input type="text" name="email">
<br>
</label><input type ="hidden" name="retype-email">
<br>
<input id="promo-code" type="hidden" name="PromoCode" value="" method="post">
<input class="Orange_button" type="submit" value="Start my free trial" data-code="trial"/>
<input class="green_button" type="submit" value="Buy it now" data-code="buy"/>
</form>
JavaScript
$('form').on('submit', function(e){
$('[name="retype-email"]').val($('[name="email"]').val());
var value = $("input[type=submit][clicked=true]").data("code");
$("#promo-code").val(value);
alert(value);
e.preventDefault()
});
$("form input[type=submit]").click(function() {
$("input[type=submit]", $(this).parents("form")).removeAttr("clicked");
$(this).attr("clicked", "true");
});
Note that I added a data attribute to the submit buttons so that we can store the code that should be added.
source: jQuery: how to get which button was clicked upon form submission?

First, add 'data-type' (or whatever the name, most important is the prefix data-) to your inputs:
HTML
<input data-type="trial" class="Orange_button" type="submit" value="Start my free trial">
<input data-type="buy" class="green_button" type="submit" value="Buy it now">
Then, change a bit your javascript in order to grab the data-type value and populate your field with it:
Javascript
$('[type="submit"]').on('click', function(e) {
// populate your duplicated 'email' field
$('[name="retype-email"]').val($('[name="email"]').val());
// populate your 'code' field : grab the data-type attribute added in your HTML
$('[name="PromoCode"]').val($(this).data('type'));
// finally, submit the form
$('form').submit();
});
Quick warning: you should consider using IDs or classes instead of working with wide selectors like [attr], it could be an issue if you have more than one form in your page (and it's a better practice anyway)

Here is my solution:
$('#usuario_form').submit(function(e){
console.log($('#'+e.originalEvent.submitter.id));
e.preventDefault();
});
You can have access to OriginalEvent Submitter Id to identify wich button was clicked

How to make a form submit on div click using jquery?

I already tried this in single php file but doesn't work out, so i tried now in two separate php file one for form and another one for process.
How to submit the form on a div or link click?
Code i tried
$(document).ready(function(){
jQuery('.web').click(function () {
$("#g_form").submit();
alert('alert');
});
});
FORM
<form action="p.php" id="g_form" method="POST">
<input type="text" name="f1" value="">
<input type="submit" value="submit!" name="submit"/>
</form>
<div class="web">click</div>
Here is the process file code p.php
<?php
if(isset($_POST['f1'])){
echo $_POST['f1'];
} ?>
When i click the submit button the form is submitting but when i click the .web div it is not submitting the form even i get the alert message but not submitting.
What wrong am doing here? It'll be helpful if i get a idea.

.submit() docs
Forms and their child elements should not use input names or ids that conflict with properties of a form, such as submit, length, or method.
Name conflicts can cause confusing failures. For a complete list of
rules and to check your markup for these problems, see
DOMLint.
You give your submit button a name of submit, which the above passage tells you will cause "confusing failures"
So if you accessed the dom element and looked at the .submit property you would see that since you name the button submit instead of .submitbeing a function its a reference to the buttons dom element
HTML
<form action="p.php" id="g_form" method="POST">
<input type="text" name="f1" value="">
<input type="submit" value="submit!" name="submit"/>
</form>
<div class="web">click</div>
JS
//Get the form element
var form = $("#g_form")[0];
console.log(form.submit);
//prints: <input type="submit" value="submit!" name="submit"/>
And when you change the submit name
<form action="p.php" id="g_form" method="POST">
<input type="text" name="f1" value="">
<input type="submit" value="submit!" name="psubmit"/>
</form>
<div class="web">click</div>
JS
var form = $("#g_form")[0];
console.log(form.submit);
//prints: function submit() { [native code] }
so simply give your submit button a different name that does not conflict with a form's properties.

You can trigger submit button click.
<form action="p.php" id="g_form" method="POST">
<input type="text" name="f1" value="">
<input type="submit" value="submit!" id="f_submit" name="submit"/>
</form>
<div class="web">click</div>
$(document).ready(function(){
jQuery('.web').click(function () {
$("#f_submit").trigger( "click" );
alert('alert');
});
});
DEMO : http://jsfiddle.net/awladnas/a6NJk/610/

HTML (provide a name for the form, strip the name from the submit):
<form action="p.php" name="g_form" id="g_form" method="post">
<input type="text" name="f1" value="">
<input type="submit" value="submit!"/>
</form>
<div class="web">click</div>
JavaScript
//use jQuery instead of $ in the global scope, to avoid conflicts. Pass $ as parameter
jQuery(document).ready(function($){
//use on(), as it's the recommended method
$('.web').on('click', function () {
//use plain JavaScript. Forms are easily accessed with plain JavaScript.
document.g_form.submit();
alert('alert');
});
});

Change the name of the submit and Try,
<input type="submit" value="submit!" name="mySubmit"/>

Remove the submit from the form and try again:
<form action="http://test.com" id="g_form" method="GET">
<input type="text" name="f1" value=""/>
</form>
<div class="web">click</div>
I changed the action to a real URL and the method to a GET so something is seen changing.
Fiddle

$(".web").live('click', DivClick);
function DivClick(){
$("#g_form").submit();
}

How can I submit div data to MySQL

I was wondering how can I submit div data to MySQL. Im not used to javascript so I dont really know whats happening on the javascript part but how can I get or input the action="" part and method="" part and can I or should I add value="" to the hidden input???
Form html code:
<form onsubmit="document.getElementById('hidden_data').value=document.getElementById('showing_data').innerHTML;">
<input id="hidden_data" name="data" type="hidden"/>
<div id="showing_data" class="commenttext" contenteditable="true"></div>
<input type="submit" Value="Enter" id="submitthis">
</form>

Use the hidden field inside the form tag and use the JavaScript to put the value inside it. You can get the hidden field in the $_POST['hydName'].Put the data on the click of the submit button into the hidden field. Keep your action and method of the form same as required. After the click event is fired, it will submit the form to its action URL
<input type="submit" onclick="document.getElememtById('hidden').value = document.getElementById('div').innerHtml;" />