由于WangEditor富文本编辑器默认使用wangeditor.txt.html(content)设置内容后会自动获取焦点，导致自动刷新面试题后会出现丢失原有焦点的问题。
这个设定无法通过设置参数解决，因此需要更改WangEditor的源代码。具体更改方式如下：
使用npm install将所有依赖包下载后，在项目的
./node_modules/wangeditor/dist/wangeditor.js
在initSelection(editor, newLine)函数或约22542行找到如下代码
将红色线框住的代码去掉即可。
npm install
npm run serve
npm run build
npm run lint
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