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input-is-empty's Introduction

input-is-empty

Sets boolean data attribute if field is empty.

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Why?

Being a void element, an <input> element is considered empty by the HTML definition of "empty", since the content model of all void elements is always empty. So they will always match the :empty pseudo-class, whether or not they have a value. This is also why their value is represented by an attribute in the start tag, rather than text content within start and end tags.

Install

$ npm install input-is-empty

Usage

import InputIsEmpty from 'input-is-empty';

const htmlInputElement = document.querySelector('input-selector');
new InputIsEmpty(htmlInputElement, {/* options */});

Note: Default is change Event

Example

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>
    <form accept-charset="utf-8">
        <input type="" name="">
    </form>
    <script type="module">
        import InputIsEmpty from 'input-is-empty';

        const htmlInputElement = document.querySelector('input');
        new InputIsEmpty(htmlInputElement);
    </script>
</body>
</html>

Options

event

Type: String
Default: change
Description: Event at which the boolean date attribute value will change

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