Gmail - show trimmed content in current email

gistfile1.txt

(function() {
    var clickExpand = function() {

        var btns = document.querySelectorAll(".ajR[aria-label='Show trimmed content']");
        if (btns.length > 0) {
            var btn = btns[btns.length - 1];
            btn.click();
        }

    };

    var clickShow = function() {

        var btn = document.querySelector(".ata-asJ");
        if (btn) {
            btn.click();
        }

    };


    setInterval(clickShow, 250);
    setInterval(clickExpand, 250);
})();