javascript and dom tree

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I am trying to use javascript to search the html text on a website. In order to do this I am using the dom tree. i wrote code to look at the html contained in a h4 element, and i can see that it found all 6 headers(d.length alert), and using chrome, i can see the textContext of each is what i would expect, but i cannot figure out the syntax to access the text of the h4 element(using last alert). PLEASE HELP!!!!! (3rd alert only accesses text of first h4 element)

$(document).ready(function (e) {
        $('#submit').click(function (e) {
            try {
                var $inputTxt = $('#search');
                result = $inputTxt.val();
                alert(result);
                var d = $('h4');
                alert("load html");

                for (var i = 0; i < d.length; i++) {
                    alert(d.length);
                    alert($('h4').html());
                    alert($d[i].html().textContext);
                }
                if (d == result) {
                    alert("result found");
                } alert("got to end");
            } catch (ex) { e.preventDefault(); }
        });