JavaScript: Count words in a string

Here is a little tip, how to quickly and easily determine the number of words in a string with JavaScript:

var str = 'These are some words.';
 
var c = str.split(' ').length;
 
alert("The string consists of " + c + " words.");

We simply separate the string with split() at its spaces. After that, in the fields of the resulting array all words of the sentence are set individually as an element, so that the length if this array is the number of words in the sentence.

Note: Works only, of course, if the words are actually separated by spaces. Double spaces or special characters can falsify the result.