vue下跨域设置的相关介绍

dev: {

  env: require('./dev.env'),
  port: 8080,
  autoOpenBrowser: false,
  assetsSubDirectory: 'static',
  assetsPublicPath: '/',
  proxyTable: {
    '/api': {
      target: 'http://api.douban.com/v2',
      changeOrigin: true,
      pathRewrite: {
        '^/api': ''
      }
    }
  },
  // CSS Sourcemaps off by default because relative paths are "buggy"
  // with this option, according to the CSS-Loader README
  // (https://github.com/webpack/css-loader#sourcemaps)
  // In our experience, they generally work as expected,
  // just be aware of this issue when enabling this option.
  cssSourceMap: false
}

Vue.prototype.HOST = '/api'

var url = this.HOST + '/movie/in_theaters'
  this.$http.get(url).then(res => {
   this.movieList = res.data.subjects;
  },res => {
   console.info('调用失败');
  });