摘要: UpLoad-Labs通关记录 第一关-前端校验 function checkFile() { var file = document.getElementsByName('upload_file')[0].value; if (file == null || file == "") { alert 阅读全文
posted @ 2021-08-04 20:48 4eg1s 阅读(73) 评论(0) 推荐(0) 编辑