asp正则表达式使用详解

2019-04-01 16:06:16丽君

Dim re
Set re = new RegExp '创建RegExp实例
re.Pattern = "ab+c" '定义正则表达式文字,你可以在这里替换正则表达式
Dim myString
myString = "abcefg" '定义要匹配的字符串,可以进行替换
Response.write(re.Execute(myString)(0)) '进行匹配测试,并写出结果


<%
Dim re
Set re = new RegExp '创建RegExp实例
re.Pattern = "w+" '定义正则表达式文字
Dim myString
myString = "VBScript version 5.6 provides many new features."
'进行匹配测试,并写出是否匹配成功
If re.Test(myString) Then
Response.write("匹配成功!")
Else
Response.write("匹配不成功!")
End If
%>


<%
Dim re
Set re = new RegExp '创建RegExp实例
re.Pattern = "s" '定义正则表达式文字,这里是匹配空白
Dim myString
myString = "VBScript version 5.6 provides many new features."
myString = re.replace(myString, "-") '用-替换空白,返回替换后的字符串
'写出结果
Response.write(myString)
%>


<%
Dim re
Set re = new RegExp '创建RegExp实例
re.Global = True
re.Pattern = "s" '定义正则表达式文字,这里是匹配空白
Dim myString
myString = "VBScript version 5.6 provides many new features."
myString = re.replace(myString, "-") '用-替换空白,返回替换后的字符串
'写出结果
Response.write(myString)
%>


<%
Dim re
Set re = new RegExp '创建RegExp实例
re.Global = True
re.Pattern = "(w+)-(w+)" '定义正则表达式模式文字
Dim myString
myString = "flip-flop"
myString = re.replace(myString, "$1-$2")
'$1表示第一个w+,$2表示第二个w+,第一个w+匹配flip,第二个w+匹配flop,
'所以$1-$2相当于flip-flop
'写出结果
Response.write(myString)
%>


<%
Dim re
Set re = new RegExp '创建RegExp实例
re.Global = True
re.Pattern = "(S+)(s+)(S+)" '定义正则表达式模式文字
Dim myString
myString = "flip flop"
myString = re.replace(myString, "$3$2$1")
'$1表示第一个S+,$3表示第二个S+,$2表示s+,
'所以$3$2$1相当于flop flip
'写出结果
Response.write(myString)
%>


<%
Dim re
Set re = new RegExp '创建RegExp实例
re.Global = True
re.Pattern = "w+" '定义正则表达式模式文字
Dim myString
myString = "VBScript version 5.6 provides many new features."
Set Matches = re.Execute(myString) '执行搜索,该集合用来保存匹配的结果
'进行匹配测试,并写出结果
'迭代Matches集合
For Each Match in Matches
'写出结果
Response.write(Match.FirstIndex & "-" & (Match.FirstIndex + Match.Length) & " " & Match.Value & "<br />")