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<title><![CDATA[ASP的函数详解-2]]></title> 
<author>碟舞飞扬 &lt;webmaster@zhanghaijun.com&gt;</author>
<category><![CDATA[Web开发]]></category>
<pubDate>Sun, 24 Jun 2007 17:56:55 +0000</pubDate> 
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<![CDATA[ 
	LCase()<br/>　　FUNCTION: 返回字符串的小写形式<br/>　　SYNTAX: Lcase(string)<br/>　　ARGUMENTS: string is any valid string expression.<br/>　　EXAMPLE: &lt;%<br/>　　strTest = &quot;This is a test!&quot;<br/>　　response.write LCase(strTest)<br/>　　%&gt;<br/>　　RESULT: this is a test!<br/><br/>Left()<br/>　　FUNCTION: 返回字符串左边第length个字符以前的字符（含第length个字符).<br/>　　SYNTAX: Left(string, length)<br/>　　ARGUMENTS:<br/>　　EXAMPLE: &lt;%<br/>　　strTest = &quot;This is a test!&quot;<br/>　　response.write Left(strTest, 3)<br/>　　%&gt;<br/>　　RESULT: Thi<br/><br/>Len()<br/>　　FUNCTION: 返回字符串的长度.<br/>　　SYNTAX: Len(string &#124; varName)<br/>　　ARGUMENTS:<br/>　　EXAMPLE: &lt;%<br/>　　strTest = &quot;This is a test!&quot;<br/>　　response.write Len(strTest)<br/>　　%&gt;<br/>　　RESULT: 15<br/><br/>LTrim()<br/>　　FUNCTION: 去掉字符串左边的空格.<br/>　　SYNTAX: LTrim(string)<br/>　　ARGUMENTS:<br/>　　EXAMPLE: &lt;%<br/>　　strTest = &quot; This is a test!&quot;<br/>　　response.write LTrim(strTest)<br/>　　%&gt;<br/>　　RESULT: This is a test!<br/><br/>Mid()<br/>　　FUNCTION: 返回特定长度的字符串(从start开始,长度为length).<br/>　　SYNTAX: Mid(string, start [, length&gt;)<br/>　　ARGUMENTS:<br/>　　EXAMPLE: &lt;%<br/>　　strTest = &quot;This is a test! Today is Monday.&quot;<br/>　　response.write Mid(strTest, 17, 5)<br/>　　%&gt;<br/>　　RESULT: Today<br/><br/>Minute()<br/>　　FUNCTION: 返回时间的分钏.<br/>　　SYNTAX: Minute(time)<br/>　　ARGUMENTS:<br/>　　EXAMPLE: &lt;%=Minute(#12:45:32 PM#)%&gt;<br/>　　RESULT: 45<br/><br/>Month()<br/>　　FUNCTION: 返回日期.<br/>　　SYNTAX: Month(date)<br/>　　ARGUMENTS: date is any valid date expression.<br/>　　EXAMPLE: &lt;%=Month(#08/04/99#)%&gt;<br/>　　RESULT: 8<br/><br/>MonthName()<br/>　　FUNCTION: Returns a string identifying the specified month.<br/>　　SYNTAX: MonthName(month, [, Abb&gt;)<br/>　　ARGUMENTS: month is the numeric representation for a given month; Abb (optional) is a boolean value used to display month abbreviation. True will display the abbreviated month name and False (default) will not show the abbreviation.<br/>　　EXAMPLE: &lt;%=MonthName(Month(#08/04/99#))%&gt;<br/>　　RESULT: August<br/><br/>Now()<br/>　　FUNCTION: Returns the current system date and time.<br/>　　SYNTAX: Now()<br/>　　ARGUMENTS: None<br/>　　EXAMPLE: &lt;%=Now%&gt;<br/>　　RESULT: 8/4/99 9:30:16 AM<br/><br/>Replace()<br/>　　FUNCTION: Returns a string in which a specified sub-string has been replaced with another substring a specified number of times.<br/>　　SYNTAX: Replace(strToBeSearched, strSearchFor, strReplaceWith [, start [, count [, compare&gt;&gt;&gt;)<br/>　　ARGUMENTS: strToBeSearched is a string expression containing a sub-string to be replaced; strSearchFor is the string expression to search for within strToBeSearched; strReplaceWith is the string expression to replace sub-string strSearchFor; start (optional) is the numeric character position to begin search; count (optional) is a value indicating the comparision constant.<br/>　　EXAMPLE: &lt;%<br/>　　strTest = &quot;This is an apple!&quot;<br/>　　response.write Replace(strTest, &quot;apple&quot;, &quot;orange&quot;)<br/>　　%&gt;<br/>　　RESULT: This is an orange!<br/><br/>Right()<br/>　　FUNCTION: 返回字符串右边第length个字符以前的字符（含第length个字符).<br/>　　SYNTAX: Right(string, length)<br/>　　ARGUMENTS: .<br/>　　EXAMPLE: &lt;%<br/>　　strTest = &quot;This is an test!&quot;<br/>　　response.write Right(strTest, 3)<br/>　　%&gt;<br/>　　RESULT: st!<br/><br/>Rnd()<br/>　　FUNCTION: 产生一个随机数.<br/>　　SYNTAX: Rnd [ (number) &gt;<br/>　　ARGUMENTS:<br/>　　EXAMPLE: &lt;%<br/>　　Randomize()<br/>　　response.write RND()<br/>　　%&gt;<br/>　　RESULT: 任何一个在0 到 1 之间的数<br/><br/>Round()<br/>　　FUNCTION: 返回按指定位数进行四舍五入的数值.<br/>　　SYNTAX: Round(expression [, numRight&gt;)<br/>　　ARGUMENTS: numRight数字表明小数点右边有多少位进行四舍五入。如果省略，则 Round 函数返回整数.<br/>　　EXAMPLE: &lt;%<br/>　　i = 32.45678<br/>　　response.write Round(i)<br/>　　%&gt;<br/>　　RESULT: 32<br/><br/>Rtrim()<br/>　　FUNCTION: 去掉字符串右边的字符串.<br/>　　SYNTAX: Rtrim(string)<br/>　　ARGUMENTS:<br/>　　EXAMPLE: &lt;%<br/>　　strTest = &quot;This is a test!! &quot;<br/>　　response.write RTrim(strTest)<br/>　　%&gt;<br/>　　RESULT: This is a test!!<br/><br/>Second()<br/>　　FUNCTION: 返回秒.<br/>　　SYNTAX: Second(time)<br/>　　ARGUMENTS: .<br/>　　EXAMPLE: &lt;%=Second(#12:34:28 PM#)%&gt;<br/>　　RESULT: 28<br/><br/>StrReverse()<br/>　　FUNCTION: 反排一字符串<br/>　　SYNTAX: StrReverse(string)<br/>　　ARGUMENTS:<br/>　　EXAMPLE: &lt;%<br/>　　strTest = &quot;This is a test!!&quot;<br/>　　response.write StrReverse(strTest)<br/>　　%&gt;<br/>　　RESULT: !!tset a si sihT<br/><br/>Time()<br/>　　FUNCTION: 返回系统时间.<br/>　　SYNTAX: Time()<br/>　　ARGUMENTS: .<br/>　　EXAMPLE: &lt;%=Time%&gt;<br/>　　RESULT: 9:58:28 AM<br/><br/>Trim()<br/>　　FUNCTION: 去掉字符串左右的空格.<br/>　　SYNTAX: Trim(string)<br/>　　ARGUMENTS: string is any valid string expression.<br/>　　EXAMPLE: &lt;%<br/>　　strTest = &quot; This is a test!! &quot;<br/>　　response.write Trim(strTest)<br/>　　%&gt;<br/>　　RESULT: This is a test!!<br/><br/>UBound()<br/>　　FUNCTION: 返回指定数组维数的最大可用下标.<br/>　　SYNTAX: Ubound(arrayname [, dimension&gt;)<br/>　　ARGUMENTS: dimension (optional) 指定返回哪一维上界的整数。1 表示第一维，2 表示第二维，以此类推。如果省略 dimension 参数，则默认值为 1.<br/>　　EXAMPLE: &lt;%<br/>　　i = Array(&quot;Monday&quot;,&quot;Tuesday&quot;,&quot;Wednesday&quot;)<br/>　　response.write UBound(i)<br/>　　%&gt;<br/>　　RESULT: 2<br/><br/>UCase()<br/>　　FUNCTION: 返回字符串的大写形式.<br/>　　SYNTAX: UCase(string)<br/>　　ARGUMENTS:<br/>　　EXAMPLE: &lt;%<br/>　　strTest = &quot;This is a test!!&quot;<br/>　　response.write UCase(strTest)<br/>　　%&gt;<br/>　　RESULT: THIS IS A TEST!!<br/><br/>VarType()<br/>　　FUNCTION: 返回指示变量子类型的值<br/>　　SYNTAX: VarType(varName)<br/>　　ARGUMENTS:<br/>　　EXAMPLE: &lt;%<br/>　　i = 3<br/>　　response.write varType(i)<br/>　　%&gt;<br/>　　RESULT: 2(数字)详见&quot;asp常数&quot;<br/><br/>WeekDay()<br/>　　FUNCTION: 返回在一周的第几天.<br/>　　SYNTAX: WeekDay(date [, firstdayofweek&gt;)<br/>　　ARGUMENTS: .<br/>　　EXAMPLE: &lt;%<br/>　　d = #8/4/99#<br/>　　response.write Weekday(d)<br/>　　%&gt;<br/>　　RESULT: 4(星期三)<br/><br/>WeekDayName()<br/>　　FUNCTION: 返回一周第几天的名字.<br/>　　SYNTAX: WeekDayName(weekday [, Abb [, firstdayofweek&gt;&gt;)<br/>　　ARGUMENTS: Abb可选。Boolean 值，指明是否缩写表示星期各天的名称。如果省略， 默认值为 False，即不缩写星期各天的名称.firstdayofweek指明星期第一天的数值<br/>　　EXAMPLE: &lt;%<br/>　　d = #8/4/99#<br/>　　response.write WeekdayName(Weekday(d))<br/>　　%&gt;<br/>　　RESULT: Wednesday<br/><br/>Year()<br/>　　FUNCTION: 返回当前的年份.<br/>　　SYNTAX: Year(date)<br/>　　ARGUMENTS:<br/>　　EXAMPLE: &lt;%=Year(#8/4/99#)%&gt;<br/>　　RESULT: 1999 
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