object_counter_of_symbols_in_the_string

training at home for fun:)

//make an object where keys are symbols and values are numbers how many times those symbols are used in the string

let str = 'Ave Maria, gratia plena, Dominus tecum, benedicta tu in mulieribus et benedictus fructus ventris tui Jesus'
let arr = str.split('');                    //transform the string into array splitting on every symbol

let counter = {};                           //assign the empty object

for(let item of arr) {                      //iterate every symbol in the array
    if(counter[item] === undefined) {       //if there are no such key yet
        counter[item] = 1                   //then we assign this key with value 1
    } else {                                // and if there are such key already
            counter[item]++                 //then we count it as + 1
    }
}
console.log(counter)