46 lines
1.3 KiB
JavaScript
46 lines
1.3 KiB
JavaScript
import $ from 'jquery';
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import { isEmpty } from 'lodash';
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import '../commons/bootstrap';
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// Requires Input behavior
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//
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// When called on a form with input fields with the `required` attribute, the
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// form's submit button will be disabled until all required fields have values.
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//
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// ### Example Markup
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//
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// <form class="js-requires-input">
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// <input type="text" required="required">
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// <input type="submit" value="Submit">
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// </form>
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//
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$.fn.requiresInput = function requiresInput() {
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const $form = $(this);
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const $button = $('button[type=submit], input[type=submit]', $form);
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const fieldSelector =
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'input[required=required], select[required=required], textarea[required=required]';
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function requireInput() {
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// Collect the input values of *all* required fields
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const values = Array.from($(fieldSelector, $form)).map((field) => field.value);
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// Disable the button if any required fields are empty
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if (values.length && values.some(isEmpty)) {
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$button.disable();
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} else {
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$button.enable();
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}
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}
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// Set initial button state
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requireInput();
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$form.on('change input', fieldSelector, requireInput);
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};
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$(() => {
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$('form.js-requires-input').each((i, el) => {
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const $form = $(el);
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$form.requiresInput();
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});
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});
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