javascript - How do I implement a keyup function with a dynamically create input element with JQuery? - Stack Overflow

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I can not figure out why the following code does not work. JSFIDDLE LINK

$(document).ready(function () {
    addInput();
});

var limit = 30;
function addInput() {
    var numberOfRows = $("#shipping tr").size();
    var id = numberOfRows;
    if (numberOfRows == limit) {
        alert("You have reached the limit of adding " + limit + " inputs");
    } else {
        $('#shipping').append('<tr id="rate' + id + '"></tr>');
        $('tr#rate' + id).append('<td></td>');
        $('tr#rate' + id).append('<td><input type="text" name="rate" /></td>');
    }
    $('input[name=rate]').on('keyup', 'input', function () {
        alert('YAY');
        return false;
    });
}

I am trying to assign a keyup function to the inputs that I add dynamically.

Expected output: YAY! inside a popup box

Please help!

I can not figure out why the following code does not work. JSFIDDLE LINK

$(document).ready(function () {
    addInput();
});

var limit = 30;
function addInput() {
    var numberOfRows = $("#shipping tr").size();
    var id = numberOfRows;
    if (numberOfRows == limit) {
        alert("You have reached the limit of adding " + limit + " inputs");
    } else {
        $('#shipping').append('<tr id="rate' + id + '"></tr>');
        $('tr#rate' + id).append('<td></td>');
        $('tr#rate' + id).append('<td><input type="text" name="rate" /></td>');
    }
    $('input[name=rate]').on('keyup', 'input', function () {
        alert('YAY');
        return false;
    });
}

I am trying to assign a keyup function to the inputs that I add dynamically.

Expected output: YAY! inside a popup box

Please help!

• javascript
• jquery

Share Improve this question Follow asked Apr 19, 2013 at 3:35 masterialmasterial 2,21699 gold badges3535 silver badges4949 bronze badges 1

• see the demo in answer.. – Dipesh Parmar Commented Apr 19, 2013 at 3:40

Add a ment  | 

2 Answers 2

Sorted by: Reset to default 7

Attach an keyup event handler to shipping table, and the event will bubble up from the input[name="rate"] to shipping table:

$('#shipping').on('keyup', 'input[name="rate"]', function () {
    alert('YAY');
    return false;
});

DEMO

You need to add delegation to document because its added to the document.

Example

$(document).on('keyup', 'input[name="rate"]', function () {
    alert('YAY ');
});

Working Demo

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