延时

var timeoutHandle = null;
function delayPlay(id, code, videoName) {
    // setTimeout("javascript:closeMp();mp = new OVT_media();jQuery('#dataList .item').removeClass('yellowColor');jQuery('#itemBg" + id + "').addClass('yellowColor');" +
    //     "cur_code='" + code + "';codeArr=[];codeArr.push('" + code + "');getPlayUrl();" +
    //     "jQuery('#video-box').hide();upgdlog('" + videoName + "','" + code + "');yellowId='itemBg" + id + "'", 1000);
    if (firstIn) {
        playFastVideo(id, code, videoName);
        firstIn = false;
    } else {
        clearTimeout(timeoutHandle);
				//调用延时,参数写外面
        timeoutHandle = setTimeout(playFastVideo, 1000, id, code, videoName);
    }
}

function playFastVideo(id, code, videoName) {
    closeMp();
    mp = new OVT_media();
    jQuery('#dataList .item').removeClass('yellowColor');
    jQuery('#itemBg' + id).addClass('yellowColor');
    cur_code = code;
    codeArr = [];
    codeArr.push(code);
    getPlayUrl();
    jQuery('#video-box').hide();
    upgdlog(videoName, code);
    yellowId = 'itemBg' + id
}

https://www.jb51.cc/html5/168480.html

var timer = setInterval(function() {
        var current = str.substr(progress, 1);
        if (current == '<') {
            progress = str.indexOf('>', progress) + 1;
        } else {
            progress++;
        }
        $ele.innerHTML = str.substring(0, progress) + (progress & 1 ? '_' : '');
        if (progress >= str.length) {
            clearInterval(timer);
        }
    }, 75);