Midterm Practice

Question 1

How do we select the id attribute in css?

Answer 1

“#id”

Question 2

How do we select the class attribute in css?

Answer 2

.class

Question 3

What does “p” select in css?

Answer 3

Selects all the paragraphs

Question 3

What does “p” select in css?

Answer 3

Selects all the paragraphs

Question 4

What does “div p” select is css?

Answer 4

Selects all paragraphs inside div elements

Question 5

What does “div, p” select in css?

Answer 5

Selects all the div and p tags

Question 6

What does “div+p” select in css?

Answer 6

Selects all the sibling p tags that immediately follow a div tag
“<div></div>”
“<p></p> <– this one–>”
“<p></p> <– this does not follow a div –>”

Question 7

What does :hover do in css?

Answer 7

Applies a style to an element when the mouse is over it

Question 8

Code test:
<?php
$pass = “test”;
$hash1 = password_hash($pass, PASSWORD_BCRYPT);
$hash2 = password_hash($pass, PASSWORD_BCRYPT);
if($hash1 == $hash2){
echo “matches”;
}
else{
echo “doesn’t match”;
}

?>

Answer 8

doesn’t match (random salt is assigned during hash to prevent two or more users from having the same password key)

Question 9

What does == do?

Answer 9

Value equality matches but not type

Question 10

What does === do?

Answer 10

Value AND type equality

Question 11

What does $x++ do?

Answer 11

Increments x by 1

Question 12

What does $x– do?

Answer 12

Decrements x by 1

Question 13

What does && do?

Answer 13

Logical AND (both conditions must be true)

Question 14

“What does || do?”

Answer 14

Logical OR (either condition must be true)

Question 15

What does ! typically do in !$x?

Answer 15

Negates it (flips the boolean or truthy value)

Question 16

What does % do in $x % $y?

Answer 16

Remainder/Modulus/Modulo

Question 17

What does . do in php?

Answer 17

Concats data/variables

Question 18

What does + do in php?

Answer 18

Addition Arithmetic

Question 19

In SQL how do you do a partial match on a column?

Answer 19

LIKE and the % wildcard

Question 20

So LIKE “hi%” partial matches what?

Answer 20

Any data in the column starting with hi

Question 21

So LIKE “%hi%” partial matches what?

Answer 21

Any data in the column that contains hi

Question 22

So LIKE “%hi” partial matches what?

Answer 22

Any data in the column ending in hi

Question 23

In SQL how do you select unique data?

Answer 23

SELECT DISTINCT

Question 24

In JS what does console.log() do?

Answer 24

Prints to the developer console

Question 25

In JS what does confirm() do?

Answer 25

Built in dialog providing a positive and negative action

Question 26

In JS what does prompt() do?

Answer 26

Built in dialog asking for user input

Question 27

while:

Answer 27

keeps running as long as the condition is true

Question 28

do while:

Answer 28

runs at least once and continues as long as true

Question 29

foreach:

Answer 29

loops over each item in a collection

Question 30

for:

Answer 30

loops a specific number of times

Question 31

Find Elements

Hello

Answer 31

Null; runs before page is ready

Question 32

Form Submit

Answer 32

[ "job":"Painter", "age":51, "name": "Joe" ]

Question 33

Logic Check 1

Answer 33

x is 1

Question 34

Logic Check 2

Answer 34

x is 1500

Question 35

Logic Check 3 2){ $x--; } } echo "x is $x"; ?>

Answer 35

x is 2

Question 36

Logic Check 4

Answer 36

x is 0

Question 37

Defined Variables "; } //does x need to be defined? ?>

Answer 37

no, it's a warning for now. PHP will do it's best to assume the initial value. Since it's addition it can assume you want it to be an int so it uses the default value of 0 then applies the arithmetic.

Question 38

Random onload sample

Hello

Bye

What?

Who?

Where?

Question 39

Update an immediate sibling This will change