How to calculate the number of words in a string using jQuery

Topic: JavaScript / jQuery« Prev|Next »

Answer: Use the JavaScript split() method

You can calculate or find the number of words in a string using the JavaScript split() method. This method simply split a string into an array of substrings by a specified character.

In the following example we have also used the trim() method to remove the leading and trailing white spaces from the string before counting the numbers of words.

  • <!DOCTYPE html>
  • <html lang="en">
  • <head>
  • <meta charset="UTF-8">
  • <title>jQuery Count Number of Words in a String</title>
  • <script type="text/javascript" src="http://code.jquery.com/jquery.min.js"></script>
  • <script type="text/javascript">
  •     $(document).ready(function(){
  •         $("button").click(function(){
  •             var words = $.trim($("textarea").val()).split(" ");
  •             alert(words.length);
  •         });
  •     });
  • </script>
  • </head>
  • <body>
  •     <textarea cols="50">The quick brown fox jumps over the lazy dog.</textarea>
  •     <br>
  •     <button type="button">Count Words</button>
  • </body>
  • </html>

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