Mega Code Archive
Trimming a String Using Regular Expressions
<![CDATA[
/*
Learn How to Program Using Any Web Browser
by Harold Davis
Apress CopyRight 2004
ISBN: 1590591135
*/
<HTML>
<HEAD>
<TITLE>Strim a tring</TITLE>
<SCRIPT>
function ltrim(testStr) {
if (testStr == "")
return "";
else {
var pattern = /[^\s]+.*/;
result = testStr.match(pattern);
return result[0];
}
}
function rtrim(testStr) {
if (testStr == "")
return "";
else {
var pattern = /.*[\S]/;
result = testStr.match(pattern);
return result[0];
}
}
function trim(testStr) {
return rtrim(ltrim(testStr));
}
</SCRIPT>
</HEAD>
<BODY>
<H1>
Trim a string today!
</H1>
<FORM name="theForm">
<TABLE>
<tr>
<td colspan=4>
Enter string for trimming:
</td>
</tr>
<tr>
<td colspan = 4>
<INPUT type=text name=testStr size=60>
</td>
</tr>
<tr>
<td colspan=3>
<INPUT type=button name="theButton" value="Trim"
onClick="document.theForm.display.value =
trim(document.theForm.testStr.value)";>
</td>
<td>
<INPUT type=button name="theButton" value="Clear"
onClick='document.theForm.testStr.value="";
document.theForm.display.value=""'>
</td>
</tr>
<tr>
<td colspan=4>
<br>
<hr>
Here's the trimmed string:
<br>
</td>
</tr>
<tr>
<td colspan = 4>
<INPUT type=text name=display size=60>
</td>
</tr>
</TABLE>
</FORM>
</BODY>
</HTML>
]]>