pass by reference. Not working

Asked May 03 '16 at 11:30

Active May 03 '16 at 11:59

Viewed 70 times

Passing object to function is not working.

function getSecret(file, secretPassword){
    file.opened = file.opened + 1;
    if(secretPassword == file.password){
        return file.contents;
    }
    else {
        return "Invalid password! No secret for you";
    }
}

function setSecret(file, secretPassword, secret){
    if(secretPassword == file.password){
        file.opened = 0;
        file.contents = secret;
    }
}

var superSecretFile = {
    level: "classified",
    opened: 0,
    password: 2,
    contents: "Dr. Evel's next meeting is in Detroit."
};
var secret = getSecret(superSecretFile, superSecretFile.password);** why  superSecretFile.password is not passing the value 2
console.log(secret);

setSecret(superSecretFile,2, "Dr. Evel's next meeting is in Philadelphia.");
secret = getSecret(superSecretFile, superSecretFile.password);
console.log(secret);

I am passing an object as an argument. This code doesn't work if I put superSecretFile.password. Why it doesn't?

edited May 03 '16 at 11:59

mnille

1,328
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asked May 03 '16 at 11:30

Azamat Adylbekov

1

Because JS is pass by value. If in `getSecret` method you set `file = {}` then it won't retain values outside that method either. – gurvinder372 May 03 '16 at 11:32
what about returning file.content or else returning "Invalid password"? – Azamat Adylbekov May 03 '16 at 11:35
@gurvinder372 => http://stackoverflow.com/a/3638034/1377002 might interest you... JS is call-by-sharing. – Andy May 03 '16 at 11:38
@Andy Great link, should answer all OP's questions. – gurvinder372 May 03 '16 at 11:39

pass by reference. Not working

0 Answers0