hkongm

// requestAnimationFrame的向下兼容处理
if (!window.requestAnimationFrame) {
    window.requestAnimationFrame = function(fn) {
        setTimeout(fn, 17);
    };
}
于是，动效绘制大致路数会变成这样：

var canvas = document.querySelector('canvas');
var context = canvas.getContext('2d');

hkongm

# first:
lsbom -f -l -s -pf /var/db/receipts/org.nodejs.pkg.bom | while read f; do  sudo rm /usr/local/${f}; done
sudo rm -rf /usr/local/lib/node /usr/local/lib/node_modules /var/db/receipts/org.nodejs.*

# To recap, the best way (I've found) to completely uninstall node + npm is to do the following:

# go to /usr/local/lib and delete any node and node_modules
cd /usr/local/lib
sudo rm -rf node*

hkongm

(function() {
        var hidden = "hidden";

        // Standards:
        if (hidden in document)
          document.addEventListener("visibilitychange", onchange);
        else if ((hidden = "mozHidden") in document)
          document.addEventListener("mozvisibilitychange", onchange);
        else if ((hidden = "webkitHidden") in document)
          document.addEventListener("webkitvisibilitychange", onchange);

hkongm

$('body').on('touchmove', function(e){e.preventDefault()});

hkongm

var getElementsByClassName = function (searchClass, node,tag) {
  if(document.getElementsByClassName){
       var nodes =  (node || document).getElementsByClassName(searchClass),result = [];
            for(var i=0 ;node = nodes[i++];){
              if(tag !== "*" && node.tagName === tag.toUpperCase()){
                   result.push(node)
              }
            }
            return result

hkongm

var willSort = [
    {
        name:'shangwenhe',
        age:25,
        height:170
    },
    {
        name:'zhangsan',
        age:31,
        height:169

hkongm

//取得ID
var $ = function (id) {
return "string" == typeof id ? document.getElementByIdx_x(id) : id;
};
 
 
// 对象继承
var Extend = function(destination, source) {
for (var property in source) {
destination[property] = source[property];

hkongm

function loadScript(url, callback){
    var script = document.createElement ("script")
    script.type = "text/javascript";
    if (script.readyState){ //IE
        script.onreadystatechange = function(){
            if (script.readyState == "loaded" || script.readyState == "complete"){
                script.onreadystatechange = null;
                callback();
            }
        };

hkongm

function ParseURL(arg){
    var url         = arg,
        regexp      = /([^\?]*)\??([^#]*)#(.*)/g,
        regexpParam = /([^&]*)=([^&]*)/g,
        urlExec     = regexp.exec(url),
        _host       = urlExec[1],
        _urlparam   = urlExec[2],
        _hashparam  = urlExec[3];

hkongm

(function(){
        if(!window.console){window.console ={log:function(){}};return;}
        var me = 19;
      var Star = function(){
        this.x=0;
        this.speed = 1;
        this.y=0;
      }
      var score = 0;
      var strs = function(){