1,fetch:https://github.com/github/fetch2,HTML5History/StateAPIs(pushState,replaceState,onPopState):https://github.com/browsersta..3、REM单元polyfill：https://github.com/chuckcarpe...4、HTML5CrossBrowserPolyfills：HTML5CrossBrowserPolyfills5、html5shiv：https://github.com/aFarkas/ht...6、selectivizr：兼容css3新选择器伪元素等7.fastclick:Polyfill消除触摸UI浏览器的点击延迟
