A simple program that I wrote that will ask the user to give a string or sentence and then the program will count the number of words in the given string or sentence using JavaScript programming.

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Program Listing

  <title>Word Count in JavaScript </title>
 	<style type="text/css">
 	body {
       font-family: arial;
       font-weight: bold;
       font-size: 15px;


 	<script type="text/javascript">
function countWords(){
	s = document.getElementById("inputString").value;
	s = s.replace(/(^\s*)|(\s*$)/gi,"");
	s = s.replace(/[ ]{2,}/gi," ");
	s = s.replace(/\n /,"\n");
	document.getElementById("wordcount").value = s.split(' ').length;

function clear_text_area() {
	document.getElementById("wordcount").value = "";
	document.getElementById("inputString").value = "";
<h1>Count Words Using JavaScript </h1>
<h4> Jake Rodriguez Pomperada, MAED-IT, MIT</h4>
<form name="form1" method="post" action="">
  <textarea name="inputString" id="inputString" cols="50" rows="4"></textarea>
<br /><br><br>

Number of Words  &nbsp;&nbsp;<input name="wordcount" id="wordcount" type="text" value="" size="6"><br><br>
<input type="button" name="Convert" value="Count Words" onClick="countWords();"> &nbsp;&nbsp;&nbsp;&nbsp;
<input type="button" name="Clear" value="Clear" onClick="clear_text_area();">