@txdfe/at/es/menu/view/util.js

一个设计体系组件库

export var getWidth = function getWidth(elem) {
  var width = elem && typeof elem.getBoundingClientRect === 'function' && elem.getBoundingClientRect().width;
  if (width) {
    width = +width.toFixed(6);
  }
  return width || 0;
};