cnpm i -D postcss postcss-edrpx2rem

适用范围设计单位 rpx 转换为 rem 1rpx=0.5px 设计稿 750px 手机端 375px

修改文件 nuxt.config.js build: { postcss: [ //require('postcss-px2rem')({ remUnit: 50 }), require('postcss-edrpx2rem')({}), ],

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!function() {
  var w = window.screen.width,
    r = (w === 2560 ? 1 : w / 375) * 16 + 'px';
  document.documentElement.style.fontSize = r;
  console.log('浏览器宽度' + w + 'px', '单位1rem=' + r)
  var data = {},
    add = function(src, num, type) {
      data[src] = num === undefined ? "加载" : num;
      var obj = document.createElement(type === 'js' ? "script" : "link");
      type === 'js' ? obj.src = src : obj.rel = 'stylesheet', obj.href = src;
      document.head.appendChild(obj);
    },
    fn = function(e) {
      e = window.event || e;
      var o = e.target || e.srcElement,
        url = o.getAttribute("src") || o.getAttribute("href") || '',
        type = o.nodeName === "SCRIPT" ? 'js' : (o.nodeName === "LINK" ? 'css' : '');
      if (url && type) {
        if (url in data) {
          data[url] = "失败";
        } else setTimeout(function() {
          add(url, "再次", type)
        }, 500);
      }
    };
  document.addEventListener("error", fn, true);
}();