一、问题
使用element-UI的项目，打包部署以后，偶尔会出现iconfont显示乱码，但是刷新后又会好。研究后，查看打包后的css, 图标字体的content经过scss编译以后变成了这样
不过正常情况下图标还是会显示的，但是偶尔进入页面后，所有的iconfont图标会变成乱码。
二、原因
1、主要原因是sass 编译问题，针对iconfont 编译后会乱码，
2、项目中引用element，改了主题色，引入的elemtui 的scss文件包含了iconfont.scss，经过sass 会重新编译,
/* 改变主题色变量 */
$--color-primary: #CCA05D;
/* icon font path, required */
$--font-path: '~element-ui/lib/theme-chalk/fonts';
@import "~element-ui/packages/theme-chalk/src/index";三、解决
对于第一个原因，sass的编译问题我们改变不了，所以我们就针对第2个原因来处理。如果引入的是elementui 编译后的css 文件，sass就不会再编译了，但我们这里需要改变主题色 需要用到scss变量，
所以最简单粗暴的方法是：
1. 项目里自定义element-ui主题的文件element-variables.scss，这个文件里本来有一个引入所有element组件scss文件的一行，这个文件其实也是包含了element所有模块的的scss文件
@import "~element-ui/packages/theme-chalk/src/index"; 把这一行去掉，然后直接引入所有的scss文件，当然要去掉iconfont的scss
这里是所有组件，你也可以按需引入：
以下是所有scss文件，可以复制哦
/* 改变主题色变量 */
$--color-primary: #CCA05D;
/* icon font path, required */
$--font-path: '~element-ui/lib/theme-chalk/fonts';
@import "~element-ui/packages/theme-chalk/src/common/transition.scss";
@import "~element-ui/packages/theme-chalk/src/pagination.scss";
@import "~element-ui/packages/theme-chalk/src/dialog.scss";
@import "~element-ui/packages/theme-chalk/src/autocomplete.scss";
@import "~element-ui/packages/theme-chalk/src/dropdown.scss";
@import "~element-ui/packages/theme-chalk/src/dropdown-menu.scss";
@import "~element-ui/packages/theme-chalk/src/dropdown-item.scss";
@import "~element-ui/packages/theme-chalk/src/menu.scss";
@import "~element-ui/packages/theme-chalk/src/submenu.scss";
@import "~element-ui/packages/theme-chalk/src/menu-item.scss";
@import "~element-ui/packages/theme-chalk/src/menu-item-group.scss";
@import "~element-ui/packages/theme-chalk/src/input.scss";
@import "~element-ui/packages/theme-chalk/src/input-number.scss";
@import "~element-ui/packages/theme-chalk/src/radio.scss";
@import "~element-ui/packages/theme-chalk/src/radio-group.scss";
@import "~element-ui/packages/theme-chalk/src/radio-button.scss";
@import "~element-ui/packages/theme-chalk/src/checkbox.scss";
@import "~element-ui/packages/theme-chalk/src/checkbox-button.scss";
@import "~element-ui/packages/theme-chalk/src/checkbox-group.scss";
@import "~element-ui/packages/theme-chalk/src/switch.scss";
@import "~element-ui/packages/theme-chalk/src/select.scss";
@import "~element-ui/packages/theme-chalk/src/button.scss";
@import "~element-ui/packages/theme-chalk/src/button-group.scss";
@import "~element-ui/packages/theme-chalk/src/table.scss";
@import "~element-ui/packages/theme-chalk/src/table-column.scss";
@import "~element-ui/packages/theme-chalk/src/date-picker.scss";
@import "~element-ui/packages/theme-chalk/src/time-select.scss";
@import "~element-ui/packages/theme-chalk/src/time-picker.scss";
@import "~element-ui/packages/theme-chalk/src/popover.scss";
@import "~element-ui/packages/theme-chalk/src/tooltip.scss";
@import "~element-ui/packages/theme-chalk/src/message-box.scss";
@import "~element-ui/packages/theme-chalk/src/breadcrumb.scss";
@import "~element-ui/packages/theme-chalk/src/breadcrumb-item.scss";
@import "~element-ui/packages/theme-chalk/src/form.scss";
@import "~element-ui/packages/theme-chalk/src/form-item.scss";
@import "~element-ui/packages/theme-chalk/src/tabs.scss";
@import "~element-ui/packages/theme-chalk/src/tab-pane.scss";
@import "~element-ui/packages/theme-chalk/src/tag.scss";
@import "~element-ui/packages/theme-chalk/src/tree.scss";
@import "~element-ui/packages/theme-chalk/src/alert.scss";
@import "~element-ui/packages/theme-chalk/src/notification.scss";
@import "~element-ui/packages/theme-chalk/src/slider.scss";
@import "~element-ui/packages/theme-chalk/src/loading.scss";
@import "~element-ui/packages/theme-chalk/src/row.scss";
@import "~element-ui/packages/theme-chalk/src/col.scss";
@import "~element-ui/packages/theme-chalk/src/upload.scss";
@import "~element-ui/packages/theme-chalk/src/progress.scss";
@import "~element-ui/packages/theme-chalk/src/spinner.scss";
@import "~element-ui/packages/theme-chalk/src/message.scss";
@import "~element-ui/packages/theme-chalk/src/badge.scss";
@import "~element-ui/packages/theme-chalk/src/card.scss";
@import "~element-ui/packages/theme-chalk/src/rate.scss";
@import "~element-ui/packages/theme-chalk/src/steps.scss";
@import "~element-ui/packages/theme-chalk/src/step.scss";
@import "~element-ui/packages/theme-chalk/src/carousel.scss";
@import "~element-ui/packages/theme-chalk/src/scrollbar.scss";
@import "~element-ui/packages/theme-chalk/src/carousel-item.scss";
@import "~element-ui/packages/theme-chalk/src/collapse.scss";
@import "~element-ui/packages/theme-chalk/src/collapse-item.scss";
@import "~element-ui/packages/theme-chalk/src/cascader.scss";
@import "~element-ui/packages/theme-chalk/src/color-picker.scss";
@import "~element-ui/packages/theme-chalk/src/transfer.scss";
@import "~element-ui/packages/theme-chalk/src/container.scss";
@import "~element-ui/packages/theme-chalk/src/header.scss";
@import "~element-ui/packages/theme-chalk/src/aside.scss";
@import "~element-ui/packages/theme-chalk/src/main.scss";
@import "~element-ui/packages/theme-chalk/src/footer.scss";
@import "~element-ui/packages/theme-chalk/src/timeline.scss";
@import "~element-ui/packages/theme-chalk/src/timeline-item.scss";
@import "~element-ui/packages/theme-chalk/src/link.scss";
@import "~element-ui/packages/theme-chalk/src/divider.scss";
@import "~element-ui/packages/theme-chalk/src/image.scss";
@import "~element-ui/packages/theme-chalk/src/calendar.scss";
@import "~element-ui/packages/theme-chalk/src/backtop.scss";
@import "~element-ui/packages/theme-chalk/src/infinite-scroll.scss";
@import "~element-ui/packages/theme-chalk/src/page-header.scss";
@import "~element-ui/packages/theme-chalk/src/cascader-panel.scss";
@import "~element-ui/packages/theme-chalk/src/avatar.scss";
@import "~element-ui/packages/theme-chalk/src/drawer.scss";
@import "~element-ui/packages/theme-chalk/src/popconfirm.scss";
@import "~element-ui/packages/theme-chalk/src/skeleton.scss";
@import "~element-ui/packages/theme-chalk/src/skeleton-item.scss";
@import "~element-ui/packages/theme-chalk/src/empty.scss";
@import "~element-ui/packages/theme-chalk/src/descriptions.scss";
@import "~element-ui/packages/theme-chalk/src/descriptions-item.scss";
@import "~element-ui/packages/theme-chalk/src/result.scss";2、然后就是重新引入iconfont的css文件，在main.js里引入element的icon.css
import Element from 'element-ui'
import "@/styles/element-variables.scss";
import 'element-ui/lib/theme-chalk/icon.css'再次打包编译后，查看css 文件就不会有乱码了