https://www.php.cn/js-tutorial-478534.html#:~:text=%E4%BD%BF%E7%94%A8javascript%E6%B6%88%E9%99%A4readonly%E7%9A%84%E6%96%B9%E6%B3%95%EF%BC%9A%E9%A6%96%E5%85%88%E4%BD%BF%E7%94%A8%E2%80%9Cdocument.getElementById,%28%E2%80%9Cid%E5%80%BC%E2%80%9D%29%E2%80%9D%E8%8E%B7%E5%8F%96%E9%9C%80%E8%A6%81%E5%A4%84%E7%90%86%E7%9A%84%E5%85%83%E7%B4%A0%E5%AF%B9%E8%B1%A1%EF%BC%9B%E7%84%B6%E5%90%8E%E4%BD%BF%E7%94%A8%E2%80%9C%E5%85%83%E7%B4%A0%E5%AF%B9%E8%B1%A1.readOnly%3Dfalse%E2%80%9D%E8%AF%AD%E5%8F%A5%E5%8E%BB%E9%99%A4%E3%80%82
可以试试这个，获取百度其他方法
如果都不行的话，建议可以参考这个教程里面的方法https://www.bilibili.com/video/BV1RT4y1f7ML/?spm_id_from=333.999.0.0

改成false试一下