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memorize.ai (lvl 286)

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What does the millis() function do?

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Programming

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6 years ago

Date created

Mar 1, 2020

Cards (30)

Section 1

(30 cards)

What does the millis() function do?

Front

returns number of milliseconds that elapsed since the sketch began

Back

What color will the following code draw to the background? var myNumber = 37; if(myNumber > 75){ background(255,0,0); } else if (myNumber > 50){ background(0,255,0); } else if (myNumber > 25){ background(0,0,255); } else { background(255); }

Front

blue (r,g,b)

Back

Select the allowable variable names

Front

one_count; var_count;

Back

How would I access the array element containing "h"? var letters = [["x", "m", "l"],["h","i","s"],["t", "v","q"]];

Front

consol.log(letters[1][0]);

Back

By default a text file is loaded as what?

Front

an array of words

Back

In the following code, what is an argument? var yloc = width/2; fill(255); var score = millis(); var newScore = yloc * score;

Front

255 argument is something you pass into a function

Back

What is the syntax for making a multi-line comment?

Front

/comment/

Back

Which of the following are loops in JavaScript/p5.js?

Front

for each for while

Back

What does the this keyword do inside a constructor function?

Front

It binds a property to a particular object/instance.

Back

What will the following code print to the console? for(let i = 0; i < 5; i++){ console.log(i*10); }

Front

0, 10, 20, 30, 40

Back

If I wanted to find the proportional equivalent of a value what function should I use?

Front

map()

Back

What function would I use to round a number down to the nearest integer?

Front

floor()

Back

What does the modulo operator (%) do?

Front

returns the remainder of the division operation

Back

What function do you use to add an element to the end of an array?

Front

push() (pop removes from end)

Back

What is wrong with the following code? let things = 100; if(things = 100){ things = things * 5; console.log("you have " + things + " things!"); }

Front

use "==" to test for equality

Back

What is a constructor function and what does it do?

Front

It creates an object from a class

Back

What is a two-dimensional array?

Front

an array that holds other arrays

Back

What code would I use to remove "banana" from the array? let fruits = ["apple", "banana", "kiwi", "strawberry", "watermelon"];

Front

fruits.splice(1,1)

Back

In JavaScript/p5.js how do we add a line break to a string?

Front

|n

Back

var apples; var pineapples; function setup(){ createCanvas(500,500); apples = 100; var bananas = 90; } draw(){ var oranges = 10; apples = apples - oranges; }

Front

apples pineapples

Back

What is the logical symbol for OR?

Front

||

Back

What does the translate() function do?

Front

moves the point of origin to a new location

Back

What will the following code print out to the console? var apples = 45; var bananas = 10; var oranges = 3; var x = apples - bananas * oranges; console.log("the value of x = " + x);

Front

the value of x = 15

Back

Which of the following is NOT a system variable.

Front

let

Back

What values are used to define polar coordinates?

Front

angle and distance

Back

What does the ++ symbol do?

Front

adds one to the value of the variable

Back

How many radians are there in a circle?

Front

2 * PI

Back

A boolean value can equal what values?

Front

1 or 0 true or false

Back

What equation can we use to find the distance between two points?

Front

Pythagorean theorem

Back

Which of the following is not a type of variable in JavaScript/p5.js?

Front

int()

Back