jquery escape square brackets to select element

Question

Consider a input element

Here the input field is dynamically generat

Answer 1

The following should work:

alert($('#meta\[152\]\[value\]').val());

or

var id = "#meta\[152\]\[value\]";
alert($(id).val());

Working Example

Conversion Function:

function ConvertValue(id)
{
    var test = id.replace(/[[]/g,'\\\\[');
    return "#" + test.replace(/]/g,'\\\\]'); 
}

Conversion Example

Answer 2

You can use the _.escapeRegExp method from the Lodash library.

console.log($('#' + _.escapeRegExp('meta[152][value]')).val());

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js"></script>
<input id="meta[152][value]" type="text" value='Test' />

Answer 3

Um, just put the escaped value right in your string.

var id = "#meta\\[152\\]\\[value\\]";

See it working here

Answer 4

If you feel more comfortable without escaping you also use the attributes selector and search for the element with that id like this: $("[id='meta[152][value]']")

Answer 5

The simplest way is just to use the regular getElementById, which requires no escaping:

document.getElementById("meta[152][value]").value;

Answer 6

this shoudl work for you, you almost had it:

    $(document).ready(function() {
       var id = "#meta\\[152\\]\\[value\\]";
        alert($(id).val()); 
    });