80 % of freshers fail to answers these javascript snippets

Q1. Guess the output:

var truth = true;
let havingFunction = function()
{
if (truth)
{
var name = “vineet”
let lastName= “mishra”
}
console.log(name)
console.log(lastName)
}
havingFunction()

Take a break don’t jump into output, think hard

Output:

vineet
ReferenceError: lastName is not defined

Reason: This happens due to the variable scope where name variable has function and lastName is having local scope

Q2. Guess the output:

console.log(3 > 2 > 1);

console.log(1 < 2 < 3);

Take a break don’t jump into output, think hard

Output:

false
true

Reason: In the first section of the snippet where 3>2>1 is false because when programs run it go for 3>2 which is true and then it goes for the other part which becomes “true >1" where the value of true is 1 then equation becomes 1>1 which going to false, vice versa happens for another snippet which is 1<2< 3

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Full Stack Developer at CCR Tech, I write about Mobile/Web Development and Deployment, and Interview Q & A

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Vineet Mishra

Vineet Mishra

Full Stack Developer at CCR Tech, I write about Mobile/Web Development and Deployment, and Interview Q & A