I'm starting in javascript and I came across a question. I need the user to enter their date of birth, which I will store day, month and year in different variables. What I need is to separate the values of these variables and then make a sum with them.
For example, the user insists that the birth year is 1994, so I need my program to make 1 + 9 + 9 + 4 = 23, which will be stored in the year variable.
Thank you!
Almost like this:
var str = "1 + 4 + 5";
str = str.repalce(" ",""); //remove os espaços
str = str.split("+"); //transforma a str em array (lista)
for (i=0; i<str.length; i++){ //percorre a lista
str[i] = parseInt(str[i]); //transforma os valores em inteiros
}
Now you will have a list of integers. Code for list sum:
function soma(lista){
var total = 0;
for (i=0; i<lista.length; i++){
total += lista[i];
}
return total;
}
Run like this:
soma(str);
Another way is to use reduce :
'1994'.split('').reduce((sum, x) => parseInt(x) + parseInt(sum)) // 23