// 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) {
return true
} else if(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) {
var word = 'str'
var ret = ''
for ( var i = 0; i < 3; i++ ) {
ret= str + str + str
}
return ret
}
function findPrimes(input)
{
var n=0
var prime = ''
for (var i = 0; i < input; i++) {
var counter = 0;
for(n = i; n>=1; n--) {
if (i%n === 0){
counter = counter + 1;
}
}
if (counter === 2){
prime = prime + i + ' ';
}
}
return prime
}
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.
