How to add checkboxes dynamically using javascript?

Question

I use Bootstrap and have a form with 2 textfields and 2 checkboxes. With an add-Button, I want to add (per click) an additional textfield with checkbox. Currently I'm using this JS:

$("#addButton").click(function () {

    var newTextBoxDiv = $(document.createElement('div'))
        .attr("id", 'TextBoxDiv' + counter);

    /*  TODO: patterns festlegen    */
    newTextBoxDiv.after().html('<div class="form-group label-floating">' +
        '<label class="control-label">Answer' + counter + '</label>' +
        '<input type="text" class="form-control"/>' +
        '</div><div class="togglebutton"><label><input type="checkbox" checked="">Toggle is on</input></label></div>');

    newTextBoxDiv.appendTo("#AnswerGroup");


    counter++;
});

It adds successfully the textfield, but the checkbox isn't showing up, only the text "Toggle is on".

How can I solve this? I inserted the JS inside $(document).ready(function () {.

EDIT I think the CSS causes the problem. When I simply add '</div><input type="checkbox" checked=""/></div>', it only shows the checkbox without UI. After adding the rest (like class="togglebutton", I see nothing.

I don't know if it is the problem, but the input of type checkbox do not have a value. Remove the </input> and close it directly. <input type="checkbox" checked="" /> — Benjamin Schüller
– Benjamin Schüller, Commented Jul 4, 2016 at 14:01
Since the JS code alone works: jsfiddle.net/9ra8vyw5 , I guess the CSS cause the problem, maybe it doesn't display checkbox inside label. — progysm
– progysm, Commented Jul 4, 2016 at 14:08

Lucky · Accepted Answer · 2016-07-05 06:55:53Z

1

The markup for your checkbox is not correct:

<label><input type="checkbox" checked="">Toggle is on</input></label>

should be

<label><input type="checkbox" checked="" />Toggle is on</label>

edited Jul 5, 2016 at 6:55

Lucky

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answered Jul 4, 2016 at 14:28

MISJHA

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1 Comment

Studentus Over a year ago

Sadly It didnt make any difference. If I put the code directly inside my static HTML, it is working. Just when I try to add it dynamically with JS, it's not displayed.

venoel · Accepted Answer · 2016-07-04 14:13:25Z

0

May be because input tag has no closing pair.

Try

'<input type="checkbox" checked="">'

And it has to have "name" attribute

answered Jul 4, 2016 at 14:13

venoel

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1 Comment

Studentus Over a year ago

It doesn't make any difference

mujuonly · Accepted Answer · 2016-07-04 14:29:51Z

0

Tested answer

<html>
<head>
    <script src="https://code.jquery.com/jquery-1.9.1.min.js"></script>
    <script>
$( document ).ready(function() {
$("#addButton").click(function () {
    var counter = 2; //for sample
    var newTextBoxDiv = $(document.createElement('div'))
        .attr("id", 'TextBoxDiv' + counter);

    /*  TODO: patterns festlegen    */
    newTextBoxDiv.after().html('<div class="form-group label-floating">' +
        '<label class="control-label">Answer' + counter + '</label>' +
        '<input type="text" class="form-control"/>' +
        '</div><div class="togglebutton"><label><input type="checkbox" checked="">Toggle is on</input></label></div>');

    newTextBoxDiv.appendTo("#AnswerGroup");


    counter++;
});
});
    </script>
</head>
<body>
    <input type="button" id="addButton" value="hello"/>
    <div id="AnswerGroup">  </div>
</body>
</html>

answered Jul 4, 2016 at 14:29

mujuonly

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3 Comments

brk Over a year ago

what is the use of $(document.createElement('div'))

mujuonly Over a year ago

In this case it will create a wrapper div with ID TextBoxDiv2

Studentus Over a year ago

If I add the label with checkbox static to html, it's working. Just when I try to add it dynamically with JS, the checkboxes are not visible (just the label).

Donnie D'Amato · Accepted Answer · 2016-07-04 14:39:24Z

First, instead of $("#addButton").click(function () { get in the habit of doing $("#addButton").on('click', function () {, you'll have more control of the event listener in the future.

Next, var newTextBoxDiv = $(document.createElement('div')).attr("id", 'TextBoxDiv' + counter); should be var newTextBoxDiv = $('<div/>').prop('id', 'TextBoxDiv' + counter);.

Next it seems you are creating content newTextBoxDiv and then inserting content after it. I'm not sure you want to do that. I would think you would want to add content to the box you just made. Additionally, according to .after(), it accepts html as an argument. I believe you calling .html() afterward is just setting the inner HTML of newTextBoxDiv anyway.

As your question specifically; you should be able to create a checkbox with the following syntax: var checkbox = $('<input/>').attr('type', 'checkbox');

To set it to checked (or unchecked) you use .prop() like this: checkbox.prop('checked', true); //checks the box.

To set it as an HTML string (and have it checked) I believe you should use the following syntax: <input type="checkbox" checked>

Luiz Gonçalves · Accepted Answer · 2016-07-06 13:58:51Z

0

Try use:

newTextBoxDiv.append(...)

instead of

newTextBoxDiv.after().html(...)

answered Jul 6, 2016 at 13:58

Luiz Gonçalves

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