Mid Function从给定的输入字符串返回指定数量的字符。
Mid(String,start[,Length])
<!DOCTYPE html>
<html>
<body>
<script language = "vbscript" type = "text/vbscript">
var = "Microsoft VBScript"
document.write("Line 1 : " & Mid(var,2) & "<br />")
document.write("Line 2 : " & Mid(var,2,5) & "<br />")
document.write("Line 3 : " & Mid(var,5,7) & "<br />")
</script>
</body>
</html>
将其另存为.html并在Internet Explorer中执行时，上述脚本将产生以下结果：
Line 1 : icrosoft VBScript Line 2 : icros Line 3 : osoft V