.length in if js code example

Example 1: javascript length

var colors = ["Red", "Orange", "Blue", "Green"];
var colorsLength=colors.length;//4 is colors array length 

var str = "bug";
var strLength=str.length;//3 is the number of characters in bug

Example 2: how to check how many strings are in a sentence javascript

function WordCounter (str) {
	var words = str.split(" ").length;
	return words;
}
// this should work!