CODEWITHSUNDEEP
javascriptstringcount
shep
shep

Reputation: 51

Javascript Count numbers in a string

I need to count numbers in a string. The numbers are separated by spaces. (1 2 3 4 10) I was trying to do this by charAt by that doesnt work if the number is not a single digit. I am relative new to JS and need some examples. I started with this but ran into a double digit #:

string1 = (1 1 1 4 10)
var total = parseFloat(0);
 for(var j=0; j<string1.length; j++) {
    total += parseFloat(string1.charAt(j)); 
}

Any help would be appreciated

Upvotes: 1

Views: 2778

Answers (4)

gwp
gwp

Reputation: 3

Here's a simpler way. First, fix string1 so it's actually a string (by adding " "s), also properly declare it with "var string". Then you could do something like this.

var string1 = ("1 1 1 4 10")

function addString(input) {
var sum = 0;                        //get your empty variable ready
var array1 = input.split(" ");    //split your string into an array
 for(var i=0; i<array1.length; i++) { 
array1[i] = parseInt(array1[i]);    // each new array element is integer
sum += array1[i];                   // += is operator for solve/refactor
}
return sum;
}

addString(string1);

Upvotes: 0

Vasyl Gutnyk
Vasyl Gutnyk

Reputation: 5039

// use method split to convert string to array and then add array items:

var string1 = "1 1 1 4 10", total = 0;
string1.split(" ").forEach(function(item) {
    total += +item;
});

Upvotes: 0

Jonas Wilms
Jonas Wilms

Reputation: 138257

Create an array:

var arr=[1,2,3]

and then do:

var count=0;
arr.forEach(function(number){
count+=number;
}

Or use a string:

var str="1 2 3";
var arr=str.split(" ");

var count=0;
arr.forEach(function(number){
count+=parseInt(number);
}

Count now contains the sum of all chars

Upvotes: 0

BrTkCa
BrTkCa

Reputation: 4783

I don't know why you need to do this way, but if this string comes from another font, you can deal with it, something like this:

var string1 = "(1 1 1 4 10)";
var aux = string1.replace("(","").replace(")","");
aux = aux.split(" ");
var total = parseFloat(0);
 for(var j=0; j<aux.length; j++) {
    total += parseFloat(aux[j]); 
}
console.log(total);

https://jsfiddle.net/bggLkvxd/1/

Upvotes: 1

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