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

Try the following

var myData = [['2013-01-22', 0], ['2013-01-29', 1], ['2013-02-05', 21]];

var myTotal = 0;  // Variable to hold your total

for(var i = 0, len = myData.length; i < len; i++) {
    myTotal += myData[i][1];  // Iterate over your first array and then grab the second element add the values up
}

document.write(myTotal); // 22 in this instance