what is .length in javascript code example

Example 1: javascript function length

// The "function length" in JS evaluates to the number of it's params

const sum = (a, b) => a + b;
const log = (s) => console.log(s);
const noop = () => {};

console.log(sum.length);  // 2
console.log(log.length);  // 1
console.log(noop.length); // 0

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