For-each in a array Javascript

March 26, 2022

var rank1 = 0
var rank2 = 0
var rank3 = 0
var rank4 = 0

const array1 = [Rank1, Rank1, Rank1, Rank3]

var Rank1 = Rank1
var Rank2 = Rank2
var Rank3 = Rank3
var Rank4 = Rank4

array1.forEach((Rank1) => {
  rank1++
});
array1.forEach((Rank2) => {
  rank2++
});
array1.forEach((Rank3) => {
  rank3++
});
array1.forEach((Rank4) => {
  rank4++
});

I’m trying to loop through array1 and save the number of times each item occurred in the array to their var.

For example, if array contains two Rank1, I want the variable rank1 to be equal to 2.

if i console.log rank1, rank2, rank3, rank4 i get the result 4,4,4,4
instead of the wanted result that would be 3,0,1,0 in this case

>Solution :

You can try the following below code.

var rank1 = 0
var rank2 = 0
var rank3 = 0
var rank4 = 0

const array1 = ['rank1','rank1','rank1','rank3']

array1.forEach( function( item, i ) {
  
  eval( item + '+= ' + 1 + ';');
  
} );

console.log(rank1, rank3);