jQuery - Onclick append form inputs and assign name attribute

Question

I have a jQuery button that every time is pressed appends the inputs below to a form. My problem is that i need a way to also give name attributes (numbers) to the new inputs that jQuery produces.

1: <input type="file">
2: <input type="file">
3: <input type="file">
4: <input type="file">

kapantzak · Accepted Answer · 2015-06-17 08:25:13Z

2

Each time you click on #button get the last input and set the new name attribute. Then append the new input element in to the form:

$('#button').on('click', function() {
   var form = $('#form');
   var num = parseInt(form.find('input:last-of-type').attr('name')) + 1;
   form.append('<input type="file" name="' + num + '" />');
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<form id="form">
  <input type="file" name="1" />
</form>

<button id="button">Add new</button>

answered Jun 17, 2015 at 8:25

kapantzak

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2 Comments

Makis Over a year ago

Basically i have a small problem, When i console.log(num) returns NaN. Any suggestions?

kapantzak Over a year ago

Please provide some code example (jsFiddle) in order for us to be able to help you

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