WordPress REST API Example #rest-api

wp-rest-api-example.php

<?php

function tomjn_rest_test() {
        return "moomins";
}

add_action( 'rest_api_init', function () {
        register_rest_route( 'tomjn/v1', '/test/', array(
                'methods' => 'GET',
                'callback' => 'tomjn_rest_test'
        ) );
} );

//Congrats! I now have an endpoint, and you can see it by visiting https://tomjn.com/wp-json/tomjn/v1/test :

// Using the End Point in a Theme
<script>
jQuery.ajax({
    url: "<?php echo wp_json_encode( esc_url_raw( rest_url( 'tomjn/v1/test' ) ) ); ?>"
}).done(function( data ) {
    jQuery( '#tomsword' ).text( data );
});
</script>