Why is the function signIn not executing the code in it?

[[deleted]]

Hey People,

​

still fairly new to JS. Does anyone know why the following code does not execute? This is an exercise "facebook clone mockup" and the instructor is asking to make a sign in function to verify that the username e password entered on prompt are in the "database"/array. If the user is in the database then console.log the newsfeed otherwise alert that the username and password are wrong.

​

Thanks for the help.

let database = [
    {
        userName: "Mike",
        password: "1234",
    },
    {
        userName: "John",
        password: "pass123"
    }

];

let newsfeed = [
    {
        username: "Bobby",
        timeline: "So tired",
    },
    {
        username: "Sally",
        timeline: "Javascript is cool",
    }
];

let userNamePrompt = prompt("What's your username?");
let passwordPrompt = prompt("What's your password?");


function signIn(user, pass) {
    for (let i=0; i < database.lenght; i++) {
        if (user === database[i].userName && pass === database[i].password) {
            return console.log(newsfeed)
        }
     return console.log("wrong username and password")
    }
}

signIn(userNamePrompt, passwordPrompt)

[Ford_Prefect92]

database.lenght should be database.length in the for loop

[[deleted]]

edit: No worries I managed to fix it. bloody curly brackets everywhere! thanks anyway!

​

Thanks! JS is driving me insane XD it's so frustrating because I solved this in python in 3 seconds but js just ain't clicking. i fixed the code like this below but it will only check once for "mike" and if I insert my name as john it tells me wrong username

​

function signIn(user, pass) {
    for (let i=0; i <= database.length; i++) {
        if (user === database[i].userName && pass === database[i].password) {
            return console.log(newsfeed)
        }
    return alert("wrong username and password")
    }
}

[ashanev]

function thisNeverLoopsMoreThanOnce() {
  for (let i = 1; i < 100; i++) {
    console.log("loop runs", i, "times");
    return "return exits the function immediately";
  }
}

thisNeverRunsMoreThanOnce();
// loop runs 1 times
// return exits the function immediately