Please explain the solution

JavaScript
1

Tell us what’s happening:
Can someone explain this ?
Please take a look at the comments i put in my code and let me know if that is correct.

specifically
collection[id][prop]=[value];

Your code so far
js

// Setup
var collection = {
    "2548": {
      "album": "Slippery When Wet",
      "artist": "Bon Jovi",
      "tracks": [ 
        "Let It Rock", 
        "You Give Love a Bad Name" 
      ]
    },
    "2468": {
      "album": "1999",
      "artist": "Prince",
      "tracks": [ 
        "1999", 
        "Little Red Corvette" 
      ]
    },
    "1245": {
      "artist": "Robert Palmer",
      "tracks": [ ]
    },
    "5439": {
      "album": "ABBA Gold"
    }
};
// Keep a copy of the collection for tests
var collectionCopy = JSON.parse(JSON.stringify(collection));

// Only change code below this line
function updateRecords(id, prop, value) {
//IF prop is equal to tracks and value is not empty
  if (prop === "tracks" && value !== "") {
//AND if collection[id][prop] is true
   if(collection[id][prop]) {
//then push (add to the end) value to collection[id][prop]
    collection[id][prop].push(value);
   }   else{
//otherwise collection[id][prop] equals [value]
    collection[id][prop]=[value];
   }
  } 
//IF value is not empty
else if (value !== "") {
//collection[id][prop] equals [value]
    collection[id][prop] = value;
  } else {
//otherwise delete collection[id][prop]
    delete collection[id][prop];
  }

  return collection;
}

// Alter values below to test your code
updateRecords(5439, "artist", "ABBA");

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36.

Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/basic-javascript/record-collection/

2

Your code has been blurred out to avoid spoiling a full working solution for other campers who may not yet want to see a complete solution. In the future, if you post a full passing solution to a challenge and have questions about it, please surround it with [spoiler] and [/spoiler] tags on the line above and below your solution code.

Thank you.

You had some things worded incorrectly. I have corrected them below:

function updateRecords(id, prop, value) {
	//IF prop is equal to 'tracks' and value is not equal to an empty string
	if (prop === 'tracks' && value !== '') {
		//AND if collection[id][prop] is true
		if (collection[id][prop]) {
			//then push (add to the end) value to collection[id][prop]
			collection[id][prop].push(value);
		} else {
			//otherwise assign [value] to collection[id][prop]
			collection[id][prop] = [value];
		}
	}
	//IF value is not equal to an empty string
	else if (value !== '') {
		//assign [value] to collection[id][prop]
		collection[id][prop] = value;
	} else {
		//otherwise delete collection[id][prop]
		delete collection[id][prop];
	}

	return collection;
}
3

Your comments are correct.

4

Thank you!
I see where I was getting confused. I was thinking that it was making the

collection[id][prop] equal the value but it’s actually assigning it the value.

rookie logic mistake in my thought process.