📄 ch7-1.htm
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<!-- 范例程序 CH7_1.HTML -->
<!--=======================================-->
<HTML>
<HEAD>
<TITLE>字符串处理函数应用</TITLE>
<SCRIPT LANGUAGE="JavaScript">
function lengthFun()
{
str = document.ThisForm.Ilength1.value
alert(str.length)
}
function charAtFun()
{
str = document.ThisForm.IcharAt1.value
alert(str.charAt
(document.ThisForm.IcharAt2.value))
}
function indexOfFun()
{
str = document.ThisForm.IindexOf1.value
alert(str.indexOf
(document.ThisForm.IindexOf2.value,
document.ThisForm.IindexOf3.value))
}
function lastIndexOfFun()
{
str = document.ThisForm.IlastIndexOf1.value
alert(str.indexOf
(document.ThisForm.IlastIndexOf2.value,
document.ThisForm.IlastIndexOf3.value))
}
function subStringFun()
{
str = document.ThisForm.IsubString1.value
alert(str.substring
(document.ThisForm.IsubString2.value,
document.ThisForm.IsubString3.value))
}
function toLowerCaseFun()
{
str = document.ThisForm.ItoLowerCase1.value
alert(str.toLowerCase())
}
function toUpperCaseFun()
{
str = document.ThisForm.ItoUpperCase1.value
alert(str.toUpperCase())
}
</SCRIPT>
</HEAD>
<BODY BackGround="bg.jpg">
<Center><Font Color=Red Size=4>
字符串处理函数应用
</Font><BR></Center>
<TABLE Border=1>
<TR><TD>函数</TD><TD>字符串</TD><TD>输入参数一
</TD><TD>输入参数二</TD><TD>输出</TD></TR>
<FORM NAME="ThisForm">
<TR><TD>length</TD>
<TD><INPUT TYPE=Text Name="Ilength1" Size=20>
</TD><TD>无</TD><TD>无</TD>
<TD><INPUT TYPE=Button Name="Press" Value="确定"
OnClick=lengthFun()></TD></TR>
<TR><TD>charAt</TD>
<TD><INPUT TYPE=Text Name="IcharAt1" Size=20>
</TD><TD>字符索引:<INPUT TYPE=Text
Name="IcharAt2" Size=5 value=0></TD>
<TD>无</TD><TD><INPUT TYPE=Button Name="Press"
Value="确定" OnClick=charAtFun()></TD></TR>
<TR><TD>indexOf</TD>
<TD><INPUT TYPE=Text Name="IindexOf1" Size=20>
</TD><TD>搜索字符串:<INPUT TYPE=Text
Name="IindexOf2" Size=5></TD>
<TD>起始字符:<INPUT TYPE=Text Name="IindexOf3"
Size=5 value=0></TD>
<TD><INPUT TYPE=Button Name="Press" Value="确定"
OnClick=indexOfFun()></TD></TR>
<TR><TD>lastIndexOf</TD>
<TD><INPUT TYPE=Text Name="IlastIndexOf1"
Size=20></TD><TD>搜索字符串:
<INPUT TYPE=Text Name="IlastIndexOf2" Size=5>
</TD><TD>起始字符:<INPUT TYPE=Text
Name="IlastIndexOf3" Size=5 value=0></TD>
<TD><INPUT TYPE=Button Name="Press" Value="确定"
OnClick=lastIndexOfFun()></TD></TR>
<TR><TD>subString</TD>
<TD><INPUT TYPE=Text Name="IsubString1" Size=20>
</TD><TD>起始索引:<INPUT TYPE=Text
Name="IsubString2" Size=5></TD><TD>结束:
<INPUT TYPE=Text Name="IsubString3" Size=5
value=0></TD><TD><INPUT TYPE=Button
Name="Press" Value="确定"
OnClick=subStringFun()></TD></TR>
<TR><TD>toLowerCase</TD>
<TD><INPUT TYPE=Text Name="ItoLowerCase1"
Size=20></TD><TD>无</TD><TD>无</TD>
<TD><INPUT TYPE=Button Name="Press" Value="确定"
OnClick=toLowerCaseFun()></TD></TR>
<TR><TD>toUpperCase</TD>
<TD><INPUT TYPE=Text Name="ItoUpperCase1"
Size=20></TD><TD>无</TD><TD>无</TD>
<TD><INPUT TYPE=Button Name="Press" Value="确定"
OnClick=toUpperCaseFun()></TD></TR>
</FORM>
</TABLE>
</BODY>
</HTML>
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