I try to Sum below two Arrays and use below two Methods:
A = [
25.8, 27,
24.099999999999998, 30.070000000000004,
34.3, 34.300000000000004,
34.3, 33,
29.2, 29.2,
27.6, 28.999999999999996,
29.310000000000002, 27.000000000000004
]
B = [
'0.00387000', '0.00472000',
'0.00534000', '0.00460000',
'0.00060000', '0.00032000',
'0.00053000', '0.00327000',
'0.00217000', '0.00217000',
'0.00460000', '0.00415000',
'0.00852000', '0.02241000'
]
Method 1
//sum array function
Array.prototype.SumArray = function (arr) {
var sum = [];
if (arr != null && this.length == arr.length) {
for (var i = 0; i < arr.length; i++) {
sum.push(this[i] + arr[i]);`enter code here`
}
}
return sum;
}
C = A.SumArray(B);
console.log (C)
Method 2
var C = A.map(function (num, idx) {
return num + B[idx];
});
But the console result is the same as below:
[
'25.80.00387000',
'270.00472000',
'24.0999999999999980.00534000',
'30.0700000000000040.00460000',
'34.30.00060000',
'34.3000000000000040.00032000',
'34.30.00053000',
'330.00327000',
'29.20.00217000',
'29.20.00217000',
'27.60.00460000',
'28.9999999999999960.00415000',
'29.3100000000000020.00852000',
'27.0000000000000040.02241000'
]
How can I add two array to make new Array like this:
[ '25.80387000', '27.00472000', . . . . . . ]
Could anyone help to let me know why and how to fix this?
The array B is consists of strings, so in order to add it to floats in the other array you need to parse it as a float.
var C = A.map(function (num, idx) {
return num + parseFloat(B[idx]);
});
This is because the data type to elements in the B array are string, so '+' operation concatenate two elements. you should change the type of the elements in B array to number and then + them.
var C = A.map(function (num, idx) {
return num + parseFloat(B[idx]);
});
this should do by parsing the string to float.
Not fully sure I understand the question but it seems like you're using strings and numbers interchangeably here. When strings are added to numbers the result is a string.
Look into using the Number wrapper or the parseFloat method depending on what suits your need.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/parseFloat