JavaScript Output Quiz

What will be the output of the following code? let x = 5; let y = "5"; console.log(x == y);

• true

• false

• undefined

• Error

What will be the output? let a; console.log(a);

• null

• undefined

• Error

• NaN

What will be logged to the console? const PI = 3.14; PI = 3.14159; console.log(PI);

• 3.14

• 3.14159

• Error

• undefined

What happens when running the following code? var x = 10; console.log(y); var y = 20;

• 10

• undefined

• ReferenceError

• 20

What will be the output? console.log(2 + "2");

• 4

• 22

• NaN

• Error

What is the output? console.log(2 * "2");

• 4

• 22

• NaN

• Error

What will be printed? let result = 10 > 5 ? "Yes" : "No"; console.log(result);

• Yes

• No

• true

• false

What will be the output? let num = 10; if (num = 5) { console.log("Equal"); } else { console.log("Not Equal"); }

• Equal

• Not Equal

• Error

• undefined

What does this code print? if (null == undefined) { console.log("Equal"); } else { console.log("Not Equal"); }

• Equal

• Not Equal

• Error

• false

What is the output? for (let i = 0; i < 3; i++) { console.log(i); }

• 0 1 2

• 1 2 3

• 0 1 2 3

• Error