How can I use .map() or .filter() method with this code? Anyone??

Question

let name = prompt("name: ");

let allWord = name.split(" ");

let wordStore = allWord.filter(word => word !== "");

let emailSchool = "[e-mail]";

let studentName = [];
// i want to use .map() with code below.
studentName.push(wordStore[wordStore.length-1]+".");

for(let i = 0; i < wordStore.length-1; i++){
studentName.push(wordStore[i][0]);
}

console.log(studentName.join("") + emailSchool);

ex: nguyen hoang anh
-> output: [e-mail]

Answer 1

If wordStore is an array, then you can do

let studentName = wordStore.map( function(n){
return n[0];
})

then

studentName[0] += ".";

It would be better if you provide a full code so we can see the whole context of it.

Answer 2

Hoang Anh check this code and see if I got it correctly

https://code.sololearn.com/WiyZVkLqk2TO/?ref=app

Answer 3

thank you guys so much

Answer 4

You can replace the loop with:

wordStore.map( function(item){
studentName.push(item[0])
})

But why?

Answer 5

i just updated my code. I want to get the last element in wordStore. please help me!

Answer 6

let wordsCount= wordStore.length
let lastWord= wordStore[wordsCount-1]
let firstLetters= ''
for(let i=0; i<wordCount-2; ++i){
firstLetters+= wordStore[i][0]
}
let finalEmail= lastWord+"."+firstLetters+emailSchool

P.S. I presumed that your final email will be formed with last word, an dot and first char of first n-1 words. If its not in this format, please, explain better