Function Accessing Object Properties

JavaScript
1

**Tell us what’s happening:
I can’t understand how function please explain anyone
**

var someObj = {
  propName: "John"
};
function propPrefix(str) {
  var s = "prop";
  return s + str;
}
var someProp = propPrefix("Name"); // someProp now holds the value 'propName'
console.log(someObj[someProp]); // "John"

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36.

Challenge: Accessing Object Properties with Variables

Link to the challenge:
https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/basic-javascript/accessing-object-properties-with-variables

2

someProp = “propName”
So,

console.log(someObj[someProp]);

Is the same as

console.log(someObj["propName"]);