String utility: word count, replace and capitalize
/*
JavaScript Application Cookbook
By Jerry Bradenbaugh
Publisher: O'Reilly
Series: Cookbooks
ISBN: 1-56592-577-7
*/
<HTML>
<HEAD>
<TITLE>strings.js Example</TITLE>
<SCRIPT LANUAGE="JavaScript1.1">
// strings.js
function wordCount(str) {
var wordArray = new Array();
str = prepStr(str);
var tempArray = str.split(' ').sort();
var count = 1;
// Iterate through all the words
for (var i = 0; i < tempArray.length; i++) {
// If an array element with the same name as
// the current word exists, increment its value by 1
if (wordArray[tempArray[i]]) {
wordArray[tempArray[i]]++;
}
// Otherwise, assign the array element to the
/// name of the word, and give it a value of 1
else { wordArray[tempArray[i]] = 1; }
}
var arrStr = '';
// Create table rows that display the word and the frequency
for (word in wordArray) {
if (word != "") {
arrStr += '<TR><TD>' + word + '</TD><TD>' + wordArray[word] + '</TD></TR>';
count++;
}
}
return '<TABLE BORDER=0 CELLPADDING=10><TR><TD WIDTH=300 VALIGN=TOP ROWSPAN=' +
count + '><B>Original Formatted Text</B><BR><I>' + str +
'</I><TD><B>Word</B><TD><B>Freqency</B></TR>' + arrStr + '</TABLE>';
}
// Define a function to format strings for easier manipulation
function prepStr(str) {
str = str.toLowerCase();
str = str.replace(/['"-]/g, "");
str = str.replace(/\W/g, " ");
str = str.replace(/\s+/g, " ");
return str;
}
function camelCaps(str, theCase) {
var tempArray = str.split(' ');
// Make the first character of each word upper- or lowercase
// depending on the value of theCase
for (var i = 0; i < tempArray.length; i++) {
if (theCase) {
tempArray[i] = tempArray[i].charAt(0).toUpperCase() + tempArray[i].substring(1);
}
else {
tempArray[i] = tempArray[i].charAt(0).toLowerCase() + tempArray[i].substring(1);
}
}
return tempArray.join(' ');
}
var order = true;
function reorder(str) {
str = prepStr(str);
str = str.replace(/\d/g, "");
order = !order;
// Use the sort() method for traditional sorts
// Use the reverse() method in conjunction for reverse sorts()
if(!order) { str = str.split(' ').sort().join(' '); }
else { str = str.split(' ').sort().reverse().join(' '); }
return str.replace(/^\s+/, "");
}
</SCRIPT>
<SCRIPT LANGUAGE="JavaScript1.1">
<!--
function doCount(txt) {
words = wordCount(txt);
self.location.href = "javascript: '<HTML>' + words + '</HTML>'";
}
//-->
</SCRIPT>
</HEAD>
<BODY BGCOLOR=WHITE>
<FORM>
Enter some words in the TEXTAREA below. Then choose <B>Count</B> for a word count: <BR>
<TEXTAREA ROWS=10 COLS=25 WRAP=PHYSICAL>
</TEXTAREA><BR>
<INPUT TYPE=BUTTON VALUE="Count" onClick="doCount(this.form.elements[0].value);">
<INPUT TYPE=RESET>
</FORM>
<BR><BR>
<FORM>
Enter some words in the TEXTAREA below. Then choose <B>Upper</B> or <B>Lower</B> to change the case: <BR>
<TEXTAREA ROWS=10 COLS=25 WRAP=PHYSICAL>
</TEXTAREA><BR>
<INPUT TYPE=BUTTON VALUE="Upper"
onClick="this.form.elements[0].value=camelCaps(this.form.elements[0].value, true);">
<INPUT TYPE=BUTTON VALUE="Lower"
onClick="this.form.elements[0].value=camelCaps(this.form.elements[0].value, false);">
<INPUT TYPE=RESET>
</FORM>
<BR><BR>
<FORM>
Enter some words in the TEXTAREA below. Then choose <B>Sort</B> to sort the text: <BR>
<TEXTAREA ROWS=10 COLS=25 WRAP=PHYSICAL>
</TEXTAREA><BR>
<INPUT TYPE=BUTTON VALUE=" Sort "
onClick="this.form.elements[0].value=reorder(this.form.elements[0].value);">
<INPUT TYPE=RESET>
</FORM>
</BODY>
</HTML>