The reason why the variable in the displayInstructor function is returning undefined even though it should be at the top of the scope due to hoisting. The answer should not be the variable's value because of this.
function displayInstructor(){
return instructor;
var instructor = "Loser";
}
According to the provided documentation, hoisting impacts variable declaration but not its value initialization. The value is assigned only when the assignment statement is encountered.
Within the function displayInstructor, the variable instructor is hoisted to the top, yet its value is set only upon reaching the line var instructor = "Loser";. When the return statement is executed before the assignment, the variable instructor remains undefined.
function displayInstructor(){
console.log(instructor) // undefined
return instructor;
var instructor = "Loser";
}
console.log(displayInstructor());To address this issue, it is recommended to assign the value first and then return the variable.
function displayInstructor() {
var instructor = "Loser";
return instructor;
}
console.log(displayInstructor());During the initial pass through the script, the interpreter initializes variables as undefined. Due to the order in which the return statement is executed, the function ultimately returns undefined.
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