What is the ouput of "10" + 20 + 30 in JAVASCRIPT

Question

Try to test your brain 💰💰💰

Answer 1

Think it is "102030"

Answer 2

Math...... >.<
My brain just crashed !!!

Answer 3

First of all Javascript compile the programs from left to right.

Therefore, "10" is a String and it is in left side.
when it is add with 20. It convert "20" to a String.
"10" + "20" + 30 => "1020" + 30.

and at last it is add with 30. It convert "30" to a String.
"10" + "20" + "30" => "102030".

Answer 4

@MrCoder, the answer is the string "102030" because JavaScript evaluates it from left to right.

"10" + 20 + 30
"1020" + 30
"102030"

Answer 5

how??? please explain this...

Answer 6

var num = "10" + 20 + 30;
document.write(num);
the answer is "102030" because "10" is a string.

Answer 7

Because the first number is a string

Answer 8

Its 1050 isn't it?

20+30 = 50
"10"+50 (50 = convert to string)
1050

Answer 9

var x="10", y= 20+30;
document.write(x+y);

Result: 1050!!

as the X value remains as a string and the Y value sums up the numbers. Upon adding the variables, it results as a String Concatenation.

Answer 10

First of all Javascript compile the programs from left to right.

Therefore, "10" is a String and it is in left side.
when it is add with 20. It convert "20" to a String.
"10" + "20" + 30 => "1020" + 30.

and at last it is add with 30. It convert "30" to a String.
"10" + "20" + "30" => "102030".

Answer 11

var x="10", y= 20+30;
document.write(x+y);

Result: 1050!!

as the X value remains as a string and the Y value sums up the numbers. Upon adding the variables, it results as a String Concatenation.