Click on every instance of a certain word in a page using Javascript

Im trying to program something using JQuery that will search a webpage for every instance of a certain word and then click on it. How would I do this?

I currently have something like this:

$(document).ready(function(){
    function follow(texttofind, setinterval){
        var buttons = $( "*:contains('"texttofind"')" );
        var i = 0;
        interval = setInterval(function(){
            for(i <= buttons.length; i++){
                $(buttons[i]).scrollIntoView();
                buttons[i].click();
            }
        },setinterval);
    }
});