Basic JavaScript - Understanding Uninitialized Variables

JavaScript
1

Tell us what’s happening:
i am not able to understand what will happen next i am very confused

Your code so far
// Only change code below this line

var a=6

var b=15

var c=“I am a string!”

// Only change code above this line

a = a + 1;

b = b + 5;

c = c + " String!";

// Only change code below this line
var a=6
var b=15
var c="I am a string!"
// Only change code above this line

a = a + 1;
b = b + 5;
c = c + " String!";

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36

Challenge: Basic JavaScript - Understanding Uninitialized Variables

Link to the challenge:

2

A variable that is equal to itself + a value will result in concatenation, meaning they will be joined to each other.
e.g. var a = 10
a = a + 5;
a = 15; because 10 + 5 is 15

if var a contains a string like:
var a = “Meow Mix”;

and you type the following:

         a = a + " is great!"

you end up with a = “Meow Mix is great!”

Now go back, slow down and follow the instructions in the challenge. Good luck.

3

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