The script downloads in the background and only runs after the page has finished parsing

The script is prevented from running until the user clicks a button

The script is downloaded and executed before the rest of the page loads

Each value is printed on the same line, separated by spaces

Only the first value is printed, and the rest are ignored

It throws an error because console.log() only accepts one argument

It can be placed at the end of a line, after actual code

It must appear on its own line and never after code

It automatically comments out the next line as well

JavaScript throws a ReferenceError immediately

total is silently created as a global variable

total is created but scoped only to the current block

It depends on whether the array's length is checked separately

Nothing inside the switch runs, and execution continues after it

Yes, break always exits every enclosing loop

No, it only exits the innermost loop that contains it

It depends on whether the outer loop uses for or while

undefined, since i is block-scoped to the loop

An array of the object's own property values

A new object containing the merged properties of obj1 and obj2

A boolean indicating whether obj1 and obj2 are equal

obj1 with all of obj2's properties removed from it

To keep its variables out of the global scope by running it once in its own scope

To make the function run repeatedly on a timer

To make the function hoist above all other code

Yes, function expressions are hoisted the same way as declarations

No, calling it earlier causes an error since only the variable name is hoisted, not its value

Yes, but only when the function takes no parameters

undefined, because arrow functions need explicit curly braces to return a value

The name of the event that occurred, such as "click"

Whether the event bubbled up from a child element

Anywhere in the page's scripts, since it becomes part of the global scope

Nowhere else, since top-level var is block-scoped to the file

Yes, because inner functions can read variables from their enclosing scope

No, each function can only see its own local variables

Only if the outer variable was declared with var instead of let

It runs automatically to set up a new instance's properties when the class is instantiated with new

It defines static methods shared across all instances

It must be called manually every time a method is used

undefined, since .then() only registers a callback

Wrap the await expression in a try...catch block

Add a .catch() directly after the async keyword

Rejections cannot be caught when using await

document.createElement() to build it, then appendChild() to insert it

document.getElementById() to build it, then innerHTML to insert it

document.write() to build it, then classList.add() to insert it

querySelector() only works on elements that have a class attribute

querySelector() accepts any CSS selector and returns the first match, while getElementById() only matches by id

They behave identically, but querySelector() runs faster

JavaScript Quiz