原文连接：https://javascript.info/onload-ondomcontentloaded The lifecycle of an HTML page has three important events: DOMContentLoaded – the browser fully loaded HTML, and the DOM tree is built, but exte

function checkFile() {var file = document.getElementsByName('upload_file')[0].value;if (file == null || file == "") {alert("请选择要上传的文件!");return false;}//定义允许上传的文件类型var allow_ext = ".jpg|.png|.gif";//提

1 Load导入数据文件 l 第一种情况 1) informix方式 dbaccess $DBNAME -<<EOF load from a.unl insert into areanumbe1 EOF 2) oracle方式 PWD=`GetPwd $DBNAME` load "$DBNAME/$PWD" a.unl "|" "insert