Use Javascript to create dynamic input id

Question

I want to use javascript to create <input/> tags with a dynamic id (name attribute will be the same) depending on the order in which they appear.

I have the first <input/> tag in plain html and a div that should append a new <input/> with an incremented id when clicked:

<input type="text" name="1" id="1" />
<div class="add_new" onClick="add_new_input()">+</div>

Now, the javascript needs to count the amount of <input/>s currently being displayed (count) and use that amount to generate a dynamic id (count+1).

Therefore if the <div class="add_new"><.. is clicked twice, the output should be as follows:

<input type="text" name="1" id="1" />
<input type="text" name="2" id="2" />
<input type="text" name="3" id="3" />

If I append the new <input/> tag in my form using jquery's append(), would this add to the previously appended <input/>s? Or would I need to append one <input/>, then two, then three, etc?

Also, how can I use javascript to count the amount of <input/>s currently being displayed?

you can use $(':input:text').size() to count the text input control — Ravi
– Ravi, Commented Nov 15, 2013 at 5:40

Vel · Accepted Answer · 2023-08-10 04:40:45Z

9

I had used script which is fit in your requirement .

Html:

<h2><a href="#" id="addScnt">Add Another Input Box</a></h2>

<div id="p_scents">
    <p>
    <label for="p_scnts">
        <input type="text" id="p_scnt" size="20" name="p_scnt" value="" placeholder="Input Value" />
    </label>
    </p>
</div>

Javascript :-

  $(function () {
    var scntDiv = $('#p_scents');
    var i = $('#p_scents p').size() + 1;

    $('#addScnt').live('click', function () {
    $('<p><label for="p_scnts"><input type="text" id="p_scnt" size="20" name="p_scnt_' + i + '" value="" placeholder="Input Value" /></label> <a href="#" id="remScnt">Remove</a></p>').appendTo(scntDiv);
    i++;
    return false;
    });

    $('#remScnt').live('click', function () {
    if (i > 2) {
        $(this).parents('p').remove();
        i--;
    }
    return false;
    });
  });

working demo

edited Aug 10, 2023 at 4:40

Vel

9,4286 gold badges42 silver badges71 bronze badges

answered Nov 15, 2013 at 5:44

Roopendra

7,75716 gold badges72 silver badges95 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

GautamD31 · Accepted Answer · 2013-11-15 05:39:52Z

4

Try like

function add_new_input() {
   var last_id = $('input[type="text"]:last').attr('id');
   last_id++;
   $('input[type="text"]:last').append('<input type="text" name="'+last_id+' id="'+last_id+'">');
}

answered Nov 15, 2013 at 5:39

GautamD31

28.8k10 gold badges66 silver badges86 bronze badges

1 Comment

proPhet Over a year ago

Ok, so javascript would remember the last appended <input/> after every click?

Ravi · Accepted Answer · 2013-11-15 05:44:42Z

1

Try this

function add_new_input(){
   var lastControlId = $('input:text:last').attr('id');
   if(!lastControlId){
    lastControlId = parseInt(lastControlId,10) + 1;
    $('#containerDiv').append('<input type="text" name="'+ lastControlId +' id="'+ lastControlId +'">');
  }
}

answered Nov 15, 2013 at 5:44

Ravi

8538 silver badges17 bronze badges

Comments

Andrew Barber · Accepted Answer · 2013-12-26 04:32:25Z

1

WORKING FIDDLE

jQuery('#select').change(function () {
var val = jQuery(this).val();
var innerhtml = '';
for (var i = 0; i < val; i++) {
    innerhtml += "<input type='text' id='" + (i + 1) + "' name='" + (i + 1) + "'size=50>   </br>";
}
jQuery('#textbox_div').html(innerhtml);
});

edited Dec 26, 2013 at 4:32

Andrew Barber

40.3k20 gold badges97 silver badges124 bronze badges

answered Nov 15, 2013 at 5:46

Sindhu

4736 silver badges19 bronze badges

1 Comment

proPhet Over a year ago

Nice solution! Not precisely what I was looking for but may use this elsewhere!

B M PAVAN · Accepted Answer · 2022-09-02 15:24:54Z

1

<body>
<div>Hello world mggp</div>
<div id="li">
    
</div>
<button type="button" onclick=add() class="btn btn-light">+addtodo</button>
<script>
var i =1;
function add() {

document.getElementById('li').innerHTML+=`<div 
id="li${i}">added</div>`;
i++

 }
</script>
</body>

answered Sep 2, 2022 at 15:24

B M PAVAN

962 silver badges7 bronze badges

1 Comment

Alireza Sabahi Over a year ago

Please describe your code and say somethings about your solution.

Anatoli · Accepted Answer · 2013-11-15 05:46:21Z

0

$( "input" ).each(function( index ) {
  $(this).attr('id', 'item-' + index);
});

This should alter all inputs with id of "item-[index number]".

But you should throw in .class identification to selector so this doesn't apply to all.

answered Nov 15, 2013 at 5:46

Anatoli

9322 gold badges11 silver badges25 bronze badges

Comments

hangman · Accepted Answer · 2013-11-15 05:53:40Z

0

using plain javascript

<script language="javascript">
    var x=1;
    function add_new_input(){
        x++;
        var input=document.createElement('input');
        input.setAttribute("id",x);
        input.setAttribute("type","text");

        document.getElementById("holder").appendChild(input);

    }
</script>

html is below

<div id="holder">
<input type="text" name="1" id="1" />
</div>
<div class="add_new" onClick="add_new_input()" >+</div>

answered Nov 15, 2013 at 5:53

hangman

8755 gold badges21 silver badges31 bronze badges

Comments

Sanjay · Accepted Answer · 2017-04-01 05:34:10Z

0

var index = 1;


function add_fields() {

    index++;
    var objTo = document.getElementById('room_fileds')
    var divtest = document.createElement("tr");
    divtest.innerHTML = ("<tr><td class='slno'>" + index + "</td><td><input type='text'></td><td><button class='remove_button' onclick='myfn()'>remove</button></td></tr>");
    objTo.appendChild(divtest);
     $(".slno").each(function(index, element) {
            $(element).text(index + 1);

       });

}

function myfn() {
        $(".remove_button").parents('tr').first().remove();
        $(".slno").each(function(index, element) {
            $(element).text(index + 1);

        });
}

answered Apr 1, 2017 at 5:34

Sanjay

1

1 Comment

Sanjay Over a year ago

<button onclick="add_fields()">add input </button> <table id="room_fileds"> <tr> </tr> </table>

Collectives™ on Stack Overflow

Use Javascript to create dynamic input id

8 Answers 8

Comments

1 Comment

Comments

1 Comment

1 Comment

Comments

Comments

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

8 Answers 8

Comments

1 Comment

Comments

1 Comment

1 Comment

Comments

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related