Difference output for "" and " " in javascript

Question

I have tried 2 conditions in JavaScript and output:

if(""){console.log("Called")} //No Output

if("_"){console.log("Called")} //Output: Called

What could be the possible reason for this?

Empty string is a falsey value. – gurvinder372 Apr 25 '18 at 10:35 — gurvinder372, Apr 25 '18 at 10:35

score 2 · Answer 1 · answered Apr 25 '18 at 10:36

2

The empty string is considered as a 'falsy' value, and so it's equivalent to doing:

if(false){console.log("Called")}

answered Apr 25 '18 at 10:36

Colin Ricardo

score 0 · Answer 2 · answered Apr 25 '18 at 10:37

0

The empty string is equal to False if you cast it to Boolean (Type Conversion).

console.log(Boolean("")) //output: false
console.log(Boolean("somestring")) //output: true

answered Apr 25 '18 at 10:37

Tuğca Eker

2 Answers2