jQuery Toggle Text?

Question

How to toggle HTML text of an anchor tag using jQuery? I want an anchor that when clicked the text alternates between Show Background & Show Text

Answer 1

 Main Text 

(function() {
    var mainText = $('.mainText').text(),
        altText = 'Alt Text';

    $('#changeText').on('click', function(){
        $(this).toggleClass('altText');
        $('.mainText').text(mainText);
        $('.altText').text(altText);
    });

})();