CODEWITHSUNDEEP
javascript
varun sharma
varun sharma

Reputation: 13

Javascript function defining

I just got this script for debugging and have no idea what this following section means.

var qns = () => site + status + "\
"
let status = "true";

The variable status has not defined before.

Upvotes: 1

Views: 59

Answers (1)

Amadan
Amadan

Reputation: 198408

This is JavaScript 1.7, available currently on Firefox, but not on most other browsers.

var qns = () => site + status + "\
"

is equivalent, but shorter than:

var qns = function() {
  return site + status + "\n";
}

(not sure if newline is valid or not). Arrow functions on MDN

let status = true is same as var status = true aside from the scope: it will only be declared for the containing block. For example,

if (true) {
  var x = 1;
  let y = 2;
  console.log(x); // => 1
  console.log(y); // => 2
}
console.log(x); // => 1
console.log(y); // => undefined

By the way, the variable status does not need to be declared before your line; it is enough if it is declared before qns() is invoked later. let statement on MDN

Upvotes: 4

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