Published
Edited
Feb 17, 2020
function sum(a, b) {
return a+b
}
function mult(a, b) {
return a*b
}
function execFunction (func, a, b) {
return func(a,b)
}
execFunction(mult, 5, 2)
function retFunction(func1, func2, selector) {
if(selector)
return func1
else
return func2
}
retFunction(sum,mult,true)(5,10)
function getDog(animal) {
if(animal.species==='dog')
return true
return false
}
function getCat(animal) {
if(animal.species==='cat' || animal.species==='kitty')
return true
return false
}
animalArray.filter(getDog)
animalArray.filter(getCat)
function countCats( currentCount, animal) {
if(animal.species==='cat'||animal.species==='kitty')
return currentCount + 1
return currentCount
}
animalArray.reduce(countCats, 0)
function getAnimalName(animal) {
return animal.name
}
animalArray.map(getAnimalName)
kittyArray = ['bob', 'sammy', 'hello', 'sammy', 'just a kitty', 'super kitty', 'mr. butters']
function toName( inputArray ) {
function attach(orgString,add){
return orgString + ", "+ add
}
return inputArray.reduce(attach);
}
function toObject( inputArray ) {
function puton(aha){
var name = aha
var species = "cat"
return{
name: name,
species: species
}
}
return inputArray.map(puton)
}
function toCart( foodArray ){
function cat(name){
if(name.includes('cat')){
return true
}
else {
return false
}
}
return foodArray.filter(cat)
}
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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.
