User:Ritenerek/js/toggle edit bg.js

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This user script seems to have a documentation page at User:Ritenerek/js/toggle edit bg.

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// Check if editing
if (mw.config.get('wgEditMessage')) {
    // Load mw.util for addPortletLink
    mw.loader.using('mediawiki.util', (r) => {
        // Add portlet link (who'd have thought!)
        var link = r('mediawiki.util').addPortletLink(
            'p-tb',
            '#',
            'Toggle background',
            'n-toggle-bg',
            'Toggle the edit box\'s background',
            null
        );
        // Remove href so there's no redirection
        link.lastChild.attributes.removeNamedItem('href');

        let editbox = document.getElementById('wpTextbox1');

        $(link).on('click', () => {
            if (editbox.style.backgroundColor == 'white') {
                editbox.style.removeProperty('background');
            } else {
                editbox.style.background = 'white';
            }
        });
    }).catch(console.error);
}