| // 超时调用问题 只是思路 | |
| function timeoutify(fn,delay) { | |
| var intv = setTimeout( function(){ | |
| intv = null; | |
| fn( new Error( "Timeout!" ) ); | |
| }, delay ) | |
| ; | |
| return function() { | |
| // timeout hasn't happened yet? |
大体的思路是，部分API的兼容性请参照caniuse：
blob对象,或者是file对象，将图片转化为data uri的形式。canvas,在页面上新建一个画布,利用canvas提供的API,将图片画入这个画布当中。canvas.toDataURL()，进行图片的压缩，得到图片的data uri的值步骤1当中，在进行图片压缩前，还是对图片大小做了判断的，如果图片大小大于200KB时，是直接进行图片上传，不进行图片的压缩，如果图片的大小是大于200KB，则是先进行图片的压缩再上传:
| var http = require('http'); | |
| var util = require('util'); | |
| var heapdump = require('heapdump'); | |
| var memwatch = require('memwatch'); | |
| var server = http.createServer(function (req, res) { | |
| res.writeHead(200, {'Content-Type': 'text/plain'}); | |
| for (var i=0; i<1000; i++) { | |
| server.on('request', function leakyfunc() { |
| var isMobile = !!navigator.userAgent.match(/AppleWebKit.*Mobile.*/);// || !!navigator.userAgent.match(/AppleWebKit/); | |
| function log(s) { | |
| try { | |
| window.console && console.log(s); | |
| } catch (ignore) { } | |
| } |
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script> | |
| window.MediaSource = window.MediaSource || window.WebKitMediaSource; | |
| function testTypes(types) { | |
| for (var i = 0; i < types.length; ++i) | |
| console.log("MediaSource.isTypeSupported(" + types[i] + ") : " + MediaSource.isTypeSupported(types[i])); | |
| } |
This is now an actual repo:
| /** | |
| * Note: This algorithm actually implements only RegExp, Array, and Date special objects. | |
| * You can implement other special cases depending on your needs. | |
| */ | |
| function clone(objectToBeCloned) { | |
| // Basis. | |
| if (!(objectToBeCloned instanceof Object)) { | |
| return objectToBeCloned; | |
| } |