What is the simplest way to dynamically create a hidden input form field using jQuery?
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6 Answers
$('<input>').attr('type','hidden').appendTo('form');
To answer your second question:
$('<input>').attr({
type: 'hidden',
id: 'foo',
name: 'bar'
}).appendTo('form');
6 Comments
Roy Tinker
Note that IE will choke if you attempt to change the input type after it's created. Use
$('<input type="hidden">').foo(...) as a workaround.
Kedar Mhaswade
Also, jQuery documentation suggests that since DOM manipulation is expensive, if you have multiple inputs to be added, add all of them once using something like $(this).append(hidden_element_array.join(''));
Mikepote
I just tried this method with jQuery 1.6.2 and recieved this error with Firefox 7.0.1: "uncaught exception: type property can't be changed" It seems that you cant use the attr method to change the type property under these conditions. I'm now trying the method below...
David Hellsing
@SpaceBison
.prop is not "the new .attr" as a lot of people seems to think. You should still use .attr to set attributes.
readikus
I had trouble with this approach when I tried to add valid HTML for the input field, as I was unable to add either a </input> or <input /> type of field. If anyone knows a solution, that would be very helpful
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$('#myformelement').append('<input type="hidden" name="myfieldname" value="myvalue" />');
3 Comments
Arthur Halma
Did someone test this answer on old IE?
PaulSkinner
Personally, I believe this is a much better approach than the accepted answer as it involves less DOM manipulation/function calls.
Fernando Silva
@PaulSkinner For the given case, yes you are correct, but it isn't always so. Take a look here stackoverflow.com/a/2690367/1067465
The same as David's, but without attr()
$('<input>', {
type: 'hidden',
id: 'foo',
name: 'foo',
value: 'bar'
}).appendTo('form');
answered Nov 19, 2015 at 14:47
Sergey Onishchenko
7,9595 gold badges51 silver badges52 bronze badges
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');
2 Comments
Prafulla Kumar Sahu
this is giving console error
Unexpected identifier .
Web_Developer
Second code, seems the "id" need to be generated dynamically something like foo1, foo2 etc
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');
answered Sep 24, 2014 at 7:17
Saurabh Chandra Patel
13.7k7 gold badges94 silver badges80 bronze badges
1 Comment
SaAtomic
What is the
'name-as-seen-at-the-server'?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
