Boolean question

JavaScript
1

Tried googling it didn’t manage to find a concrete answer.
I passed this lesson, question how come it passes?

is it because in JS, if not stated otherwise it is true? if(responseFromServer)


const makeServerRequest = new Promise((resolve, reject) => {
// responseFromServer represents a response from a server
let responseFromServer;
  
if(responseFromServer) {
resolve("We got the data");
} else {  
reject("Data not received");
}
});

  **Your browser information:**

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.110 Safari/537.36

Challenge: Complete a Promise with resolve and reject

Link to the challenge:

2

The if statement does not check if it is “true”, it checks if it is “truthy”. “falsy” values are: false, 0, -0, 0n, empty strings, NaN, undefined, and null. Everything else is “truthy”.

1 Like
3

ah okay, so since its an empty string its “falsy” hence its true.

4

I’m not sure what is the “it” in that sentence.

In the example you provide, responseFromServer is declared but not initialized and never given a value so it would be undefined always so it would be falsy.

1 Like
5

Yes the variable was my referral, ty for your answer :slight_smile:

6

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