InStrRev函数返回一个字符串在另一个字符串中的第一次出现。搜索从右到左进行。
InStrRev(string1,string2[,start,[compare]])
<!DOCTYPE html> <html> <body> <script language = "vbscript" type = "text/vbscript"> var = "Microsoft VBScript" document.write("Line 1 : " & InStrRev(var,"s",10) & "<br />") document.write("Line 2 : " & InStrRev(var,"s",7) & "<br />") document.write("Line 3 : " & InStrRev(var,"f",-1,1) & "<br />") document.write("Line 4 : " & InStrRev(var,"t",5) & "<br />") document.write("Line 5 : " & InStrRev(var,"i",7) & "<br />") document.write("Line 6 : " & InStrRev(var,"i",7) & "<br />") document.write("Line 7 : " & InStrRev(var,"VB",1)) </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 : 6 Line 2 : 6 Line 3 : 8 Line 4 : 0 Line 5 : 2 Line 6 : 2 Line 7 : 0