Cloning a Form in jQuery and Increasing the Index

Question

This seems relatively simple, I'm just stumped on jQuery syntax.

Basically I want to take this form :

<div class="me_signup">
  <input type="text" name="referral[0][name]" id="referral_0_name">
  <br>
  <input type="text" name="referral[0][email]" id="referral_0_email">
</div>

And duplicate it with a button and increase the variable number..

$(".add_another_button").click(function(){
    ...
};

Answer 1

Something like this?

$(".add_another_button").click(function() {
    var $newdiv = $(".me_signup:last").clone(true);
    $newdiv.find('input').each(function() {
        var $this = $(this);
        $this.attr('id', $this.attr('id').replace(/_(\d+)_/, function($0, $1) {
            return '_' + (+$1 + 1) + '_';
        }));
        $this.attr('name', $this.attr('name').replace(/\[(\d+)\]/, function($0, $1) {
            return '[' + (+$1 + 1) + ']';
        }));
        $this.val('');
    });
    $newdiv.insertAfter('.me_signup:last');
});

Answer 2

You can put all that html in a variable, and use .append() method to add this to a particular DOM element. And, should you clone this, be sure to change "id" to "class", because id must be unique on each page. Some more about .append() in official documentation