I have a string :
var str = 123, 124, 234,252;
I want to parse each item after split and increment 1. So I will have:
var arr = [124, 125, 235, 253 ];
How can I do that in NodeJS?
Use split and map function:
var str = 123, 124, 234,252;
var arr = str.split(,);
arr = arr.map(function (val) { return +val + 1; });
Notice +val - string is casted to a number.
Or shorter:
var str = 123, 124, 234,252;
var arr = str.split(,).map(function (val) { return +val + 1; });
Today I'd advise against using + operator to cast variable to a number. Instead I'd go with a more explicit but also more readable Number call:
var str = 123, 124, 234,252;
var arr = str.split(,).map(function (val) {
return Number(val) + 1;
});
console.log(arr);ECMAScript 2015 introduced arrow function so it could be used instead to make the code more concise:
var str = 123, 124, 234,252;
var arr = str.split(,).map(val => Number(val) + 1);
console.log(arr);
