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JavaScript JavaScript Foundations Variables Hoisting

mickey Odunikan
mickey Odunikan
4,983 Points

Variable best practices?

Alter the 'elevatorCloseButton' function to follow the best practices in declaring variables within the scope of the function.

<!DOCTYPE html>
<html lang="en">
    <title> JavaScript Foundations: Variables</title>
      html {
        background: #FAFAFA;
        font-family: sans-serif;
    <h1>JavaScript Foundations</h1>
    <h2>Variables: Hoisting</h2>


    function elevatorCloseButton(pushed) {
    var status = "I'll close when I'm ready."
        if (pushed) {



Dan Garrison
Dan Garrison
22,457 Points

The problem is that you are declaring the value for the variable before the if statement. The value should only evaluate to "I'll close when I'm ready." if the value passed to it is true. So your function should read something like:

function elevatorCloseButton(pushed) {
    var status;

    if (pushed) {
        status = "I'll close when I'm read.";

So basically you first declare the variable at the beginning of the function using the var keyword. Then you call that variable again within the if statement. You don't use the var keyword here because that would create a new variable called status instead of calling the original variable.

1 Answer

Thanks a tonne :)