411 REFERENCE · Wikibooks
Web Programming/JS Arrary
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Array Sort
var points = [40, 100, 1, 5, 25, 10]
points.sort((a, b) => a-b)
console.log(points)
runnable code
Array Map Reduce
array = [{x:1},{x:2},{x:4}]
newValue = 2
result = array.map(item => item.x==newValue)
.reduce((a,b)=>a||b)
console.log(result)
runnable code
Array Filter
array = [{x:1},{x:2},{x:4}]
newValue = 1
newArray = array.filter(item => item.x>newValue)
console.log(newArray)
runnable code
Array Push/Pop
var fruits = ["Orange"]
fruits.push("Kiwi")
console.log(fruits)
fruits.pop()
console.log(fruits)
runnable code
Array Shift/Unshift
var fruits = ["Orange", "Kiwi"]
console.log(fruits)
fruits.shift()
console.log(fruits)
fruits.unshift("Apple")
console.log(fruits)
runnable code