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VBScript Mid 函数


❮ VBScript 参考大全

Mid 函数返回字符串中指定数量的字符。

提示:使用 Len 函数确定字符串中的字符数量。

语法

Mid(string,start[,length])

参数 描述
string 必需。要从中返回字符的字符串表达式
start 必需。指定起始位置。如果设置为大于字符串中字符的数量,则返回空字符串 ("")
length 可选。要返回的字符数量

示例

示例 1

返回 1 个字符,从位置 1 开始

<%

txt="This is a beautiful day!"
response.write(Mid(txt,1,1))

%>

以上代码的输出结果为

T
查看示例 »

示例 2

返回 15 个字符,从位置 1 开始

<%

txt="This is a beautiful day!"
response.write(Mid(txt,1,15))

%>

以上代码的输出结果为

This is a beaut
查看示例 »

示例 3

返回所有字符,从位置 1 开始

<%

txt="This is a beautiful day!"
response.write(Mid(txt,1))

%>

以上代码的输出结果为

This is a beautiful day!
查看示例 »

示例 4

返回所有字符,从位置 12 开始

<%

txt="This is a beautiful day!"
response.write(Mid(txt,12))

%>

以上代码的输出结果为

eautiful day!
查看示例 »

❮ VBScript 参考大全
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