how to find a string length in javascript code example

Example 1: js string length

let str = "foo";
console.log(str.length);
// 3

Example 2: 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