CODEWITHSUNDEEP
javascriptjquerycssangularjswordpress
KK SK
KK SK

Reputation: 101

How to make sum for negative number and positive numbers in angularjs

I am getting json data from server through $http.get method. in the data one of the field called Credits, it contains negative values and positive numbers. any one can help me how can i get negative numbers in seperate total and positive numbers in separate totals??

Array.prototype.sum = function (prop) {
    var total = 0
    for (var i = 0, _len = this.length; i < _len; i++) {
        total += parseInt(this[i][prop])
    }
    return total
}
$scope.totalCreadit = function (arr) {
    return arr.sum("credits");
}

this function is giving me the totals but i need to separate in total for negative values and positive values.

thanks in advance.

Upvotes: 0

Views: 1607

Answers (1)

Sajeetharan
Sajeetharan

Reputation: 222582

You could use filter and reduce method,

var arr = [ 1, 2, 3, 4, 5, -2, 23, -1, -13, 10, -52 ],
    positive = arr.filter(function (a) { return a >= 0; }),
    negative = arr.filter(function (a) { return a < 0; }),
    sumnegative = negative.reduce(function (a, b) { return a + b; }),
    sumpositive = positive.reduce(function (a, b) { return a + b; });
console.log(sumnegative);
console.log(sumpositive);

Upvotes: 1

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