JavaScript Array Filter | filter Array Method | JavaScript Tutorial смотреть онлайн

JavaScript Array Filter | filter Array Method | JavaScript Tutorial

Code:
// method which creates an array of elements that pass the test provided by the function
//Scenario 1
const numbers = [1,2,3,4,5,6]
const even = numbers.filter(isEven)

function isEven(value){
return value % 2 !== 0
}

//console.log(even)
//Scenario 2
//filer method does not chnge the original array
const numbers2 = [1,2,3,4,5,6]
const even2 = numbers2.filter(isEven)

function isEven(value){
return value % 2 === 0
}

console.log(even2)
console.log(numbers2)
//Scenario 3
const People =[
{
name : 'A',
profession : 'SE',
age:25

},
{
name : 'B',
profession : 'Youtuber',
age : 15

},
{
name : 'C',
profession : 'BM',
age : 40

},
]

const filterByPro = People.filter(person =person.age=25)
console.log(filterByPro)

//Scenario 4
const num = [1,2,3,4,5,1,2,3,4,5,7,8]

const uniquenum = num.filter((value,index,arr)={
console.log(value+" : "+arr.indexOf(value)+" : "+index)
return arr.indexOf(value) === index;
});

console.log(uniquenum)

Chapters:
0:00 - Introduction to the video
0:19 - Scenario 1 of filter function
2:33 - Scenario 2 of filter function
3:16 - Scenario 3 of filter function
6:03 - Scenario 4 of filter function
9:21 - End tags and subscription to the channel

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#filter
#javascript
#javascriptfunctions