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JavaScript Introduction to Programming Objects and Arrays Objects

Posted by Daniel Valcik
Daniel Valcik
Courses Plus Student 1,892 Points

If/Else with Objects on pop-up

Hi, I have just started with programming here and I am curious, what I am doing wrong in my code. I would like to define the name in pop-up asking me "What is your name". If answered name will be Daniel, the program executes the first alert, otherwise the other alert.

Here is my code:

var myself = {
    first_name: "Daniel",
    last_name: "Trueman",
    birth_place: "Prague",
};

var fake_name = "Roman";

var name = prompt("What is your name?");
var Daniel = "Daniel";

if (Daniel) {
    alert(myself.first_name + " " + myself.last_name + " nice to meet you!")
} else {
    alert("So, you must be " + fake_name + " " + myself.last_name)
};

1 Answer

Dino Paškvan
Dino Paškvan
Courses Plus Student 44,108 Points

In your if statement, you're not comparing the variable to anything. Any string that has a length more than '0' is a a truthy value so, since you've set the variable Daniel to a string "Daniel" the first part of the if statement will always run.

So...

if (someVar === someOtherVar) {
  // do something
} else {
  // do something else
}

Also, in JavaScript, never name a variable with a capital letter as you've done with Daniel. The usual convention is that you use a first uppercase letter for constructor names, not regular variables.