Sum values from an Array in JavaScript

Question

I have defined a JavaScript variables called myData which is a new Array like this:

var myData = new Array([\'2013-01-22\', 0], [\'         


        

Answer 1

The javascript built-in reduce for Arrays is not a standard, but you can use underscore.js:

var data = _.range(10);
var sum = _(data).reduce(function(memo, i) {return memo + i});

which becomes

var sumMyData = _(myData).reduce(function(memo, i) {return memo + i[1]}, 0);

for your case. Have a look at this fiddle also.