Pls anyone explain this code

Question

https://code.sololearn.com/WwVmXSZ5u3AO/?ref=app

Answer 1

var a = 3;
var b = 7;

if((a++ > 5) && (b > 4)){ // current value of a=3 is 3>7 no so condition is false
document.write(b);
}else{
document.write(a); //it goes to else outputs 4 (because a is post incremented after previous condition)
}

Answer 2

As a=3 and a++ is not greater than 5, so if condition becomes false..

So, the else condition will be executed
in else we have to print a
Initially a=3
after incrementation a++=>a=a+1=> 4
Now, a becomes 4 i.e a=4
Hence, you'll get 4 as output...

Answer 3

var a = 3;
var b = 7;

if((a++ > 5) && (b > 4)){
document.write(b);
}else{
document.write(a);
}

Output is 4. That's because a++>5 is false, because a is 3, but after testing it becomes 4.

Since one of the conditions is false in an And statement, the whole is false.

So, a is outputted, which is presently 4.

Hope I helped.