What's the output?

Which one is true?

`ReferenceError: greetign is not defined`

`SyntaxError`. You cannot add properties to a function this way.

What happens when we do this?

`Person {firstName: "Lydia", lastName: "Hallie"}` and `undefined`

`Person {firstName: "Lydia", lastName: "Hallie"}` and `Person {firstName: "Sarah", lastName: "Smith"}`

`Person {firstName: "Lydia", lastName: "Hallie"}` and `{}`

`Person {firstName: "Lydia", lastName: "Hallie"}` and `ReferenceError`

What are the three phases of event propagation?

All object have prototypes.

`["", " is ", " years old"]` `"Lydia"` `21`

`"Lydia"` `21` `["", " is ", " years old"]`

`"Lydia"` `["", " is ", " years old"]` `21`

What's the value of `sum`?

When the user closes the entire browser, not only the tab.

How long is cool_secret accessible?

The JavaScript global execution context creates two things for you: the global object, and the "this" keyword.

What is the event.target when clicking the button?

When you click the paragraph, what's the logged output?

`0`, `''`, `new Boolean(false)`, `undefined`

`0`, `new Number(0)`, `''`, `new Boolean(false)`, `undefined`

Which of these values are falsy?

Everything in JavaScript is either a...

What does the `setInterval` method return in the browser?

What does this return?

What's the value of `num`?

`SyntaxError: can only throw Error objects`

`{ admin: true, name: "Lydia", age: 21 }`

`{ admin: true, user: { name: "Lydia", age: 21 } }`

`{ name: "Lydia", age: 21 }`, `["name", "age"]`

`"{"username": "lydiahallie", "level":19, "health":90}"`

`1` `2` and `undefined` `3` and `undefined` `4`

`1` `undefined` and `2` `undefined` and `3` `undefined` and `4` `undefined`

With which constructor can we successfully extend the `Dog` class?

`running sum.js`, `running index.js`, `3`

`running sum.js`, `3`, `running index.js`

`running index.js`, `running sum.js`, `3`

`running index.js`, `undefined`, `running sum.js`

`" Lydia Hallie"`, `"Lydia Hallie"` (`"[1x whitespace]Lydia Hallie"`, `"Lydia Hallie"`)

`" Lydia Hallie"`, `" Lydia Hallie"` (`"[13x whitespace]Lydia Hallie"`, `"[2x whitespace]Lydia Hallie"`)

`game.next().value` and `game.next("Yes").value`

`game.next("Yes").value` and `game.next().value`

`game.next.value("Yes")` and `game.next.value()`

`game.next.value()` and `game.next.value("Yes")`

How can we log the values that are commented out after the console.log statement?

`Hello` <br />&nbsp; &nbsp; &nbsp;`world`

`Hello\n` <br /> &nbsp; &nbsp; &nbsp;`world`

Is this a pure function?

`Calculated! 20` `From cache! 20` `From cache! 20`

`Calculated! 20` `From cache! 20` `Error`

`Calculated! 20` `Calculated! 20` `Calculated! 20`

`Calculated! 20` `From cache! 20` `Calculated! 20`

What is the output?

`0` `1` `2` `3` and `"☕"` `"💻"` `"🍷"` `"🍫"`

`"☕"` `"💻"` `"🍷"` `"🍫"` and `"☕"` `"💻"` `"🍷"` `"🍫"`

`"☕"` `"💻"` `"🍷"` `"🍫"` and `0` `1` `2` `3`

`0` `1` `2` `3` and `{0: "☕", 1: "💻", 2: "🍷", 3: "🍫"}`

`{ name: "Lydia", age: 21, city: "Amsterdam" }`

`{ name: "Lydia", age: 21, city: undefined }`

The result of the callback in the previous `.then()`.

The result of the second invocation of the `fetch` method.

What kind of information would get logged?

Which option is a way to set `hasName` equal to `true`, provided you cannot pass `true` as an argument?

`{ default: function default(), name: "Lydia" }`

`{ default: "Hello world", name: "Lydia" }`

`{ constructor: ...}` `{ constructor: ...}`

`[["banana", "apple"], "pear", "orange"]`

`["banana", "apple", ["pear"], "orange"]`

`a is bigger`, `undefined` and `b is bigger`, `undefined`

`a is bigger`, `6` and `b is bigger`, `3`

`{Symbol('a'): 'b'}` and `["{Symbol('a')"]`

`[1, 2, 3, 4]` and `{ name: "Lydia", age: 21 }`

`[1, [2, 3, 4]]` and `{ name: "Lydia", age: 21 }`

`Impossible! You should see a therapist after so much JavaScript lol`

`possible! You should see a therapist after so much JavaScript lol`

`possible! You shouldn't see a therapist after so much JavaScript lol`

`Impossible! You shouldn't see a therapist after so much JavaScript lol`

JavaScript Questions Quiz

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