[转] JavaScript APIs you’ve never heard of (and some you have)

分享自玉伯也叫射雕的微博, 幻灯片在 SlideShare 上, 估计要翻下.. 我在 VPS 上放了一个备份, pptx 格式的.. 幻灯片里讲了许多很有意思的 API, 比如:

    child= list.lastElementChild;  
    child = child.nextElementSibling;

menu.insertAdjacentHTML("beforebegin",
    "<p>Hello world!</p>");

xhr.upload.onprogress = function(event) {
    var percentage = event.loaded/event.total * 100;
    updateProgress(percentage);

if (element.matchesSelector(“body .bar”)) {
    //do something
}