knownothingsnow

前端开发常用命令和配置

Sass

$ gem sources --add https://gems.ruby-china.org/ --remove https://rubygems.org/
$ gem sources -l

确保只有 gems.ruby-china.org,遇到ssl证书问题,改用http

安装node-sass失败时，打开~/.npmrc，添加

knownothingsnow

  /*判断浏览器类型*/
  let browser = {
    versions: function() {
      let u = navigator.userAgent, app = navigator.appVersion;
      return {
        trident: u.indexOf('Trident') > - 1, //IE内核
        presto : u.indexOf('Presto') > - 1, //opera内核
        webKit : u.indexOf('AppleWebKit') > - 1, //苹果 谷歌内核
        gecko  : u.indexOf('Gecko') > - 1 && u.indexOf('KHTML') == - 1,//火狐内核
        mobile : ! ! u.match(/AppleWebKit.*Mobile.*/), //是否为移动终端

knownothingsnow

function unique(arr) {
  let n = []
  arr.forEach((item, index) => {
    if (n.indexOf(item) === -1) n.push(item)
  })
  return n
}