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LFZ > Week 1 > Flashcards

Week 1 Flashcards

1
Q

Name two types of units that can be used to adjust font-size in CSS.

A

pixels, px and rem/em, and percentages, % (do not use percentage)

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2
Q

What CSS property controls the font used for the text inside an element?

A

font-family, e.g. body {font-family: sans-serif}

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3
Q

What CSS properties make up the box model?

A

content, padding, margin,border

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4
Q

Which CSS property pushes boxes away from each other?

A

margin

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5
Q

Which CSS property add space between a box’s content and its border?

A

padding

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6
Q

What is the default flex-direction of a flex container?

A

row (horizontally), left to right

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7
Q

What is the default flex-wrap of a flex container?

A

nowrap (none)

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8
Q

Why do two div elements “vertically stack” on one another by default?

A

they are by default block level, i.e. display: block

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9
Q

What is the default flex-direction of an element with display: flex?

A

horizontal, left to right

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10
Q

What are the three primary components of a page layout? (Which helper classes do you need?)

A

row, column, container

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11
Q

What is the minimum number of columns that you should put in a row?

A

one

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12
Q

What is the purpose of a container?

A

to encase things so you can flexbox?

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13
Q

What is the default value for the position property of HTML elements?

A

static

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14
Q

How does setting position: relative on an element affect document flow?

A

It doesn’t but items inside will move if removed from doc flow?

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15
Q

How does setting position: relative on an element affect where it appears on the page?

A
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16
Q

How does setting position: absolute on an element affect where it appears on the page?

A
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17
Q

How do you constrain an absolutely positioned element to a containing block?

A
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18
Q

What are the four box offset properties?

A

left, right, bottom, top

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19
Q

how do you overlay items on top of each other?

A

you can adjust ordering using “z-index”

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20
Q

Why do we log things to the console?

A

to make sure your code is working!

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21
Q

What is a method?

A

A method is a function which is a property of an object. There are two kinds of methods: instance methods which are built-in tasks performed by an object instance, or static methods which are tasks that are called directly on an object constructor.

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22
Q

How is a method different from any other function?

A

it is a property of an object

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23
Q

How do you remove the last element from an array?

A

pop() method

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24
Q

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

A

Math.floor() method

25
Q

How do you generate a random number?

A

Math.random() method

26
Q

How do you delete an element from an array?

A

.splice() method

27
Q

How do you append an element to right end of an array?

A

.push() method

28
Q

How do you break a string up into an array?

A

.split() method

29
Q

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

A

No, strings are immutable.

to check, console log it

30
Q

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

A

around 50

31
Q

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

A

no because you might use/do somthing different in the function later

32
Q

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

A
33
Q

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

A

MDN !

34
Q

how do u link js file to html?

A

<body>



</body>















35










Q













Give 6 examples of comparison operators.


















A













&& || < > etc..















36










Q













What data type do comparison expressions evaluate to?


















A













bulion















37










Q













What is the purpose of an if statement?


















A













conditions















38










Q













Is else required in order to use an if statement?


















A













no















39










Q













Describe the syntax (structure) of an if statement.


















A













if (a < b) {return false}















40










Q













What are the three logical operators?


















A













How do you compare two different expressions in the same condition?















41










Q













What are the three logical operators?


















A




























42










Q













How do you compare two different expressions in the same condition?


















A













using “and” or “or”















43










Q













What is the purpose of a loop?


















A













run code repeated times under specific conditions















44










Q













What is the purpose of a condition expression in a loop?


















A













tells how long / many times loop to run for















45










Q













What does “iteration” mean in the context of loops?


















A













number of times loop runs















46










Q













When does the condition expression of a while loop get evaluated?


















A













at beginning of each iteration















47










Q













When does the initialization expression of a for loop get evaluated?


















A













at start of loop















48










Q













When does the condition expression of a for loop get evaluated?


















A













after initialization and after every iteration















49










Q













When does the final expression of a for loop get evaluated?


















A













after the iteration















50










Q













Besides a return statement, which exits its entire function block, which keyword exits a loop before its condition expression evaluates to false?


















A













the break keyword















51










Q













What does the ++ increment operator do?


















A













increments value by 1















52










Q













How do you iterate through the keys of an object?


















A













“for in” loop















53










Q













how do use find loop debugger?


















A













something like this!: inspector, sources, , main d js, left click, debugger, or enter debugger keyword above console log in code block















54










Q













What are the four components of “the Cascade”.


















A













source order, specificity, inheritance, important















55










Q













What does the term “source order” mean with respect to CSS?


















A













the order in which css rules are written in stylesheet and order in which they are prioritized (last being hightest priority)















56










Q













How is it possible for the styles of an element to be applied to its children as well without an additional CSS rule?


















A













using inheritance if it is available.  inheritance will apply to other items inside the element.















57










Q













List the three selector types in order of increasing specificity.


















A













element, class, ID















58










Q













Why is using !important considered bad practice?


















A













because it implies one is not following other best practices by organizing code correctly















59










Q













selecotors by priority order


















A















(lowest to hightest)


universal selector(*), 
element, 
class, 
id, 
inline, 
important
































LFZ (21 decks)


























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