Size attribute set to 0 for an HTML input element

When an input element is rendered, it should have a width of 0. However, when there is no text in the input, the width should remain 0.
To achieve this, you can use the following jQuery code:
$('input').on('input', function () {
  $(this).attr('size', $(this).val().length);
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input type="text" size="0">

The size attribute works correctly for all sizes greater than 0, but for a size of 0, the browser defaults to a standard width instead of rendering it as a width of 0.

Is there a way to make an input element with a size attribute of 0 render as having a width of 0 in the browser?

javascripthtmlcss

Answer №1

My suggestion for this scenario would be to implement style='width: 0ch'. By doing this, the width of the field will correspond to the size of one character:

$('input').on('input', function () {
  $(this).css('width', $(this).val().length + 'ch');
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input type="text" style='width: 0ch'>

Answer №2

To apply width: 0px to all input elements with a size attribute of 0, you can utilize a CSS attribute selector.

$('input').on('input', function() {
  $(this).attr('size', $(this).val().length);
})
input[size="0"] {
  width: 0px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input type="text" size="0">

For valid HTML syntax, it is recommended to set the width to 0px onload:

$('input').on('input', function() {
  $(this).attr('size', $(this).val().length);
}).width(0)
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input type="text" size="0">

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