+ 3

Could someone explain me how this code works line to line? Thanks.

function f(a){ var arr=[]; var i=0; while(i<a.length){ if(a[i]%2!==0){arr.push(a[i]);} i++; } var a=[1,4,3,5]; document.write(f(a));

7th May 2018, 2:42 PM
Rastislav Romanec
Rastislav Romanec - avatar
1 Réponse
+ 6
//Define a function f which takes an argument let's say a function f(a) //create an empty array named arr var arr = [] //create a variable i to use in while loop condition statement var i = 0 //run the loop while i is less than function's argument length (a.length) while( i < a.length){ //if a index i modulus 2 is not equal to 0 if (a[i] % 2 !== 0){ //then push a[i] to our variable arr arr.push(a[i]) //increment the counter variable i otherwise this will be an infinite i++ } //added this return statement below so you can see the output return arr } // this curly brace was absent in your code // assign variable a to an array of length 4 var a = [1, 4, 3, 5] //now write the result to the html document document.write(f(a))
7th May 2018, 3:06 PM
Lord Krishna
Lord Krishna - avatar