// DECLARAING A FUNCTION
function myFunctionThatCalculatesASum( parameter1, parameter2 ) {
// CODE BLOCK: do stuff in here
var sumOfMyParamters = parameter1 + parameter2
return sumOfMyParamters // <-- this is outputted from the function
}
// RUNNNING THE FUNCTION
theOutput = myFunctionThatCalculatesASum(true,true)
{
function sum(a,b) {
return a + b
}
function product(a,b) {
return a * b
}
var onePlusTwo = sum(1,2)
var threePlusFour = sum(3,4)
var productOfTwoVariables = product(onePlusTwo, threePlusFour)
return productOfTwoVariables // <-- ignore that return. it's to make the notebook work
}
{
var bob = function () {return "Hi, I'm in Bob!"}
var joe = bob() + " And now I'm called by Joe!"
return joe
}
function checkDay(today) {
if(today === "Sunday" || today === "Saturday") {
return "WEEKEND"
} else {
return "WEEKDAY"
}
}
checkDay("Sunday")
{
// COUNTING TO TEN
var count = 0
while( count != 10 ) {
count = count + 1;
}
return count;
}
{
// COUNTING TO TEN
var count = 0
for( var i = 0; i < 10; i++ ) {
count = count + 1
count = count + 1
count = count + 1
count = count + 1
count = count + 2
count = count + 1
count = count + 1
count = count + 1
count = count + 1
}
return count
}
function testable(isGood) {
if(isGood===true)
return "yes"
return "no"
}
test1 = testable(true)==="yes"
test2 = testable(false)==="no"
test3 = testable(1)==="yes"
function sleepIn(weekday, vacation)
{
if ( weekday == false || vacation == true)
{
return true
}
else{
return false;
}
}
function hasTeen(num1, num2, num3){
if (num1>=13 && num1<=19) {
return true
}
else if (num2>=13 && num2<=19) {
return true
}
else if(num3>=13 && num3<=19) {
return true
}
else{
return false
}
}
function front3(str) {
str = str.substring(0,3)
var newstr = ""
for (var i=0; i<3; i++) {
newstr = newstr+str
}
return newstr
}
function findPrimes(input)
{{ var store = [], i, j, primes = []; for (i = 2; i <= max; ++i) { if (! store [i]) { primes. push(i); for (j = i << 1; j <= max; j += i) { store[j] = true; } } } return primes; };
}
Purpose-built for displays of data
Observable is your go-to platform for exploring data and creating expressive data visualizations. Use reactive JavaScript notebooks for prototyping and a collaborative canvas for visual data exploration and dashboard creation.
