javascript-methods Flashcards

1
Q

Why do we log things to the console?

A

To show what the code is doing.

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2
Q

What is a method?

A

A method is a function which is a property of an object.

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3
Q

How is a method different from any other function?

A

The difference is that a method is associated with an object, while a function is not.

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4
Q

How do you remove the last element from an array?

A

pop method of the Array object

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5
Q

How do you round a number down to the nearest integer?

A

floor method of the Math object

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6
Q

How do you generate a random number?

A

random method of the Math object

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7
Q

How do you delete an element from an array?

A
  1. splice method of the Array object
  2. pop method of the Array object
  3. shift method of the Array object
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8
Q

How do you append an element to an array?

A

push method of the Array object

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9
Q

How do you break a string up into an array?

A

split method of the String object

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10
Q

Do string methods change the original string? How would you check if you weren’t sure?

A
  • No

- console.log

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11
Q

Roughly how many string methods are there according to the MDN Web docs?

A

30

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12
Q

Is the return value of a function or method useful in every situation?

A

No

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13
Q

Roughly how many array methods are there according to the MDN Web docs?

A

30

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14
Q

What three-letter acronym should you always include in your Google search about a JavaScript method or CSS property?

A

MDN

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