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PHP

Tooltip Shortcode for Terms and Abbreviations

Adds a [wpide_tooltip tip="Explanation"]term[/wpide_tooltip] shortcode that shows a small explanation bubble on hover, tap or keyboard focus.

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Code

add_action( 'wp_enqueue_scripts', function () {
    wp_register_style( 'wpide-tooltip', false, array(), '1.0' );
    wp_add_inline_style( 'wpide-tooltip', '.wpide-tip{position:relative;border-bottom:1px dotted currentColor;cursor:help;}.wpide-tip:focus-visible{outline:2px solid currentColor;outline-offset:2px;}.wpide-tip__bubble{position:absolute;left:50%;bottom:calc(100% + 8px);transform:translateX(-50%);width:max-content;max-width:min(260px,80vw);padding:6px 10px;border-radius:6px;background:#1d2327;color:#fff;font-size:.85rem;line-height:1.4;font-weight:400;text-align:center;opacity:0;visibility:hidden;transition:opacity .15s ease;z-index:50;pointer-events:none;}.wpide-tip__bubble::after{content:"";position:absolute;top:100%;left:50%;margin-left:-5px;border:5px solid transparent;border-top-color:#1d2327;}.wpide-tip:hover .wpide-tip__bubble,.wpide-tip:focus .wpide-tip__bubble,.wpide-tip:focus-within .wpide-tip__bubble{opacity:1;visibility:visible;}' );
} );

add_shortcode( 'wpide_tooltip', function ( $atts, $content = '' ) {
    $atts = shortcode_atts( array( 'tip' => '' ), $atts, 'wpide_tooltip' );

    if ( '' === trim( $atts['tip'] ) || '' === trim( $content ) ) {
        return esc_html( $content );
    }

    wp_enqueue_style( 'wpide-tooltip' );

    $id = 'wpide-tip-' . wp_unique_id();

    return sprintf(
        '<span class="wpide-tip" tabindex="0" aria-describedby="%1$s">%2$s<span class="wpide-tip__bubble" role="tooltip" id="%1$s">%3$s</span></span>',
        esc_attr( $id ),
        esc_html( $content ),
        esc_html( $atts['tip'] )
    );
} );

Notes

The explanation is also exposed to screen readers. Keep tips short; long text belongs in the content.

How to add this snippet

  1. Install WPIDE on your WordPress site (it is free) and open Code Snippets.
  2. Use snippet above adds it from the library in one click. Or copy the code into a new snippet with the same code type.
  3. It is added inactive: review the code and settings, then switch it on.

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