After getting some help working through my bugs, I have what seems to
be a robust, working word counter script. I post it here to benefit
others that might want this in the future and so that if I ever lose
my copy I can come back here to find it :) Some other scripts that I
used for inspiration failed when confronted with whitespace before the
string or miscalculated when encountering linefeeds and other
non-space spaces, so I made mine better. Definition of words for this
exercise is contiguous groups of characters separated by whitespace.
Maybe it will even be useful to somebody besides me.
Cheers!
--David
<html>
<!--Generated 02/12/04-->
<!--modified 02/15/04-->
<!--name of this file: "wordCounter.ht ml" -->
<head>
<title>Word Counter</title>
<SCRIPT LANGUAGE="JavaS cript">
function trim(data)
{
while (/\s/.test(data.char At(0)))
{data=data.subs tring(1,data.le ngth);}
while (/\s/.test(data.char At(data.length-1)))
{data=data.subs tring(0,(data.l ength-1));}
return data;
}
function countWords()
{
var input, wordList, output;
input=document. forms[0].elements[0].value;
input=trim(inpu t);
wordList=input. split(/\s+/g);
output=wordList .length;
document.forms[0].elements[0].focus();
return output;
}
</SCRIPT>
</head>
<body bgcolor="#66666 6"
text="#00ff00"
link="#ffffcc"
vlink="#ffffcc" >
Enter or paste text into the box below and press <b>count</b> to see
the total number of words.
<br>
<br>
<form onSubmit="retur n false">
<center>
<textarea rows="30" cols="100"></textarea>
<br>
<br>
<button onClick="alert( 'total words = ' + countWords())"
class="button"> count</button>
</center>
</form>
</body>
</html>
2  1596 
David wrote: After getting some help working through my bugs, I have what seems to
be a robust, working word counter script. I post it here to benefit
others that might want this in the future and so that if I ever lose
my copy I can come back here to find it :) Some other scripts that I
used for inspiration failed when confronted with whitespace before the
string or miscalculated when encountering linefeeds and other
non-space spaces, so I made mine better. Definition of words for this
exercise is contiguous groups of characters separated by whitespace.
Maybe it will even be useful to somebody besides me.
Cheers!
--David
function trim(data)
{
while (/\s/.test(data.char At(0)))
{data=data.subs tring(1,data.le ngth);}
while (/\s/.test(data.char At(data.length-1)))
{data=data.subs tring(0,(data.l ength-1));}
return data;
}
trim() would be better implemented as:
String.prototyp e.LTrim = new Function("retur n this.replace(/^\\s+/,'')")
String.prototyp e.RTrim = new Function("retur n this.replace(/\\s+$/,'')")
String.prototyp e.Trim = new Function("retur n
this.replace(/^\\s+|\\s+$/g,'')")
as shown in the FAQ at <url: http://jibbering.com/faq/#FAQ4_16 />
function countWords()
{
var input, wordList, output;
input=document. forms[0].elements[0].value;
input=trim(inpu t);
Using the Trim() method outlined above, this would become:
input = input.Trim();
--
| Grant Wagner <gw*****@agrico reunited.com>
* Client-side Javascript and Netscape 4 DOM Reference available at:
* http://devedge.netscape.com/library/...ce/frames.html
* Internet Explorer DOM Reference available at:
* http://msdn.microsoft.com/workshop/a...ence_entry.asp
* Netscape 6/7 DOM Reference available at:
* http://www.mozilla.org/docs/dom/domref/
* Tips for upgrading JavaScript for Netscape 7 / Mozilla
* http://www.mozilla.org/docs/web-deve...upgrade_2.html
JRS: In article <67************ **************@ posting.google. com>, seen
in news:comp.lang. javascript, David <da***********@ mindspring.com>
posted at Sun, 15 Feb 2004 23:51:19 :- After getting some help working through my bugs, I have what seems to
be a robust, working word counter script.
<!--Generated 02/12/04-->
this is an international newsgroup; please use internationally-
comprehensible notation. The above, in most countries, is 2nd December
2004. The correct form is 2004-02-12; or put the month as Feb and use
YYYY.
input=trim(inp ut);
wordList=input .split(/\s+/g);
output=wordLis t.length;
What purpose does trim serve here? and /g?
I find
Q = X.replace(/\S+/g, 'a').replace(/\s+/g, '').length
to be significantly faster than
Q = X.split(/\s+/).length
for strings with many words. The latter creates many Objects.
--
© John Stockton, Surrey, UK. ?@merlyn.demon. co.uk Turnpike v4.00 IE 4 ©
<URL:http://jibbering.com/faq/> Jim Ley's FAQ for news:comp.lang. javascript
<URL:http://www.merlyn.demo n.co.uk/js-index.htm> jscr maths, dates, sources.
<URL:http://www.merlyn.demo n.co.uk/> TP/BP/Delphi/jscr/&c, FAQ items, links. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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