CODEWITHSUNDEEP
javascriptjqueryattributescloneunique
user1378715
user1378715

Reputation: 127

jQuery cloning an element and changing attributes of child elements to keep them unique

I've looked around at a few answers to similar questions but I don't fully understand the answers.

I have a form with a table in it which contains some inputs, as below...

<table class="form right 40 rewardclone_1">
<tr>        
<td><label for="financial_goal_1">Amount</label></td>
<td>Pledge <span class="dollar">&#36;</span><input id="financial_goal_1" class="text dollars" type="text" name="financial_goal_1" /> or more</td>
</tr>
<tr>
    <td><label for="maximum_1">Maximum</label></td>
<td><input id="maximum_1" class="text dollars" type="text" name="maximum_1" /> available (blank for unlimited)</td>
</tr>
<tr>
<td><label for="reward_1">Reward:</label></td>
<td><textarea id="reward_1" name="reward_1"></textarea></td>
</tr>
</table>

I've managed to create a button which clones this entire table when clicked.

$('#add_reward').click(function() {         
  $('.rewardclone').clone().appendTo('#rewards_container');     
});

The problem is I need all those numbers on the attributes (reward_1, maximum_1, etc.) to increment each time the table is cloned.

Any help would be greatly appreciated!

jQuery level: Beginner.

Thanks.

Upvotes: 4

Views: 3262

Answers (3)

WoShiNiBaBa
WoShiNiBaBa

Reputation: 267

I made a small adjustment to Selvakumar Arumugam's answer, because when I print out {NUM}, it's not changing. 

$(function() {
    var rewardTableTmpl = '<table class="form right 40 rewardclone">' +
        '<tr><td><label for="financial_goal_{NUM}">Amount</label></td>' +
        '<td>Pledge <span class="dollar">&#36;</span><input id="financial_goal_{NUM}" class="text dollars" type="text" name="financial_goal_{NUM}" /> or more</td>' +
        '</tr><tr>' +
        '<td><label for="maximum_{NUM}">Maximum</label></td>' +
        '<td><input id="maximum_{NUM}" class="text dollars" type="text" name="maximum_{NUM}" /> available (blank for unlimited)</td>' +
        '</tr><tr>' +
        '<td><label for="reward_{NUM}">Reward:</label></td>' +
        '<td><textarea id="reward_{NUM}" name="reward_{NUM}"></textarea></td>' +
         '</tr></table>';

var count =0;
     $('#add_reward').click(function() {
         count++;
        $('#rewards_container').append(rewardTableTmpl.replace(/{NUM}/g, count));
    });

});

Upvotes: 0

Selvakumar Arumugam
Selvakumar Arumugam

Reputation: 79830

Since it is a small table, I prefer using it as a template instead of cloning and finding matching elements.

Note: depending on the server technology, you can also load rewardTableTmpl from server for the first time and then use the template for further use.

DEMO

$(function() {
    var rewardTableTmpl = '<table class="form right 40 rewardclone">' +
        '<tr><td><label for="financial_goal_{NUM}">Amount</label></td>' +
        '<td>Pledge <span class="dollar">&#36;</span><input id="financial_goal_{NUM}" class="text dollars" type="text" name="financial_goal_{NUM}" /> or more</td>' +
        '</tr><tr>' +
        '<td><label for="maximum_{NUM}">Maximum</label></td>' +
        '<td><input id="maximum_{NUM}" class="text dollars" type="text" name="maximum_{NUM}" /> available (blank for unlimited)</td>' +
        '</tr><tr>' +
        '<td><label for="reward_{NUM}">Reward:</label></td>' +
        '<td><textarea id="reward_{NUM}" name="reward_{NUM}"></textarea></td>' +
         '</tr></table>';

    $('#add_reward').click(function() {
        $('#rewards_container').append(rewardTableTmpl.replace(/{NUM}/g, $('rewardclone').length + 1));
    });
});

Upvotes: 2

Paolo Bergantino
Paolo Bergantino

Reputation: 488394

This would be a simple solution for your case:

$('#add_reward').click(function() {         
    var $x = $('.rewardclone').clone();
    $x.appendTo('#rewards_container');
    $x.find('input[id], textarea[id], label[for]').each(function() {
        if($(this).is('label')) {
            var new_id = parseInt($(this).attr('for').split('_').pop(), 10) + 1;
            $(this).attr('for', new_id);
        } else {
            var new_id = parseInt(this.id.split('_').pop(), 10) + 1;
            this.id = new_id;
        }
    });     
});

Upvotes: 2

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