jQuery - Create hidden form element on the fly
JavascriptJqueryFormsHidden FieldJavascript Problem Overview
What is the simplest way to dynamically create a hidden input form field using jQuery?
Javascript Solutions
Solution 1 - Javascript
$('<input>').attr('type','hidden').appendTo('form');
To answer your second question:
$('<input>').attr({
type: 'hidden',
id: 'foo',
name: 'bar'
}).appendTo('form');
Solution 2 - Javascript
$('#myformelement').append('<input type="hidden" name="myfieldname" value="myvalue" />');
Solution 3 - Javascript
The same as David's, but without attr()
$('<input>', {
type: 'hidden',
id: 'foo',
name: 'foo',
value: 'bar'
}).appendTo('form');
Solution 4 - Javascript
if you want to add more attributes just do like:
$('<input>').attr('type','hidden').attr('name','foo[]').attr('value','bar').appendTo('form');
Or
$('<input>').attr({
type: 'hidden',
id: 'foo',
name: 'foo[]',
value: 'bar'
}).appendTo('form');
Solution 5 - Javascript
function addHidden(theForm, key, value) {
// Create a hidden input element, and append it to the form:
var input = document.createElement('input');
input.type = 'hidden';
input.name = key; //name-as-seen-at-the-server
input.value = value;
theForm.appendChild(input);
}
// Form reference:
var theForm = document.forms['detParameterForm'];
// Add data:
addHidden(theForm, 'key-one', 'value');
Solution 6 - Javascript
Working JSFIDDLE
If your form is like
<form action="" method="get" id="hidden-element-test">
First name: <input type="text" name="fname"><br>
Last name: <input type="text" name="lname"><br>
<input type="submit" value="Submit">
</form>
<br><br>
<button id="add-input">Add hidden input</button>
<button id="add-textarea">Add hidden textarea</button>
You can add hidden input and textarea to form like this
$(document).ready(function(){
$("#add-input").on('click', function(){
$('#hidden-element-test').prepend('<input type="hidden" name="ipaddress" value="192.168.1.201" />');
alert('Hideen Input Added.');
});
$("#add-textarea").on('click', function(){
$('#hidden-element-test').prepend('<textarea name="instructions" style="display:none;">this is a test textarea</textarea>');
alert('Hideen Textarea Added.');
});
});
Check working jsfiddle here