【RegExp】IE判断、移动端判断（用正则对navigator.userAgent进行处理）

// 7 || 8 || 9 || 10 || NaN
window.IE = /MSIE/.test(navigator.userAgent) ? parseInt(navigator.userAgent.split(';')[1].replace(/ MSIE /, '')) : NaN;

//true || false
window.IsMobile = /Mobile|iPhone|Android|Windows Phone/.test(navigator.userAgent);