Performing calculations on an Interger array in Javascript?

You are not creating the array correctly, and your for loop is going out of bounds Here's what it should look like var actor = 20,30,10,30,10, 10,20,40,30,0, 10,10,20,40,20 var n1 = 0; for (var I = 0; I.

You are not creating the array correctly, and your for loop is going out of bounds. Here's what it should look like. Var actor = 20,30,10,30,10, 10,20,40,30,0, 10,10,20,40,20 var n1 = 0; for (var I = 0; I You can change n1 = n1 + actor0i; to n1 += actor0i;.

You might also consider changing for (var I = 0; I.

Thank you! Works perfectly. MY life would be so much easier if I could supply a csv file to Javascript – user991735 Nov 1 at 15:23.

Remember array indicies are 0-based. The array actor0 has 5 elements (0-4), but you're iterating over 6 (0-5). When you try to add actor05—which is undefined—to n1, it becomes NaN, because you can't add undefined to a Number.

Instead of hard-coding the array length, use its length property: for (var I = 0; I.

Thank you! That worked, It was bit of a noob mistake! Maybe I need some sleep.

– user991735 Nov 1 at 14:19.

When using the Array constructor, you use parentheses: var actor = new Array( ... ); You can also use the literal array syntax for the outer array, just as you do with the inner arrays: var actor = ... ; You are looping outside the array. As the array has five items, you should loop from 0 to 4: for (var I = 0; I As you have 5 items, you do the comparison I.

You only have a 3 x 5 matrix, if you want to call it this, so you are exceeding the dimension count. Try being dynamic and replace 6 with the value you are really looking for: var actor = new Array 20,30,10,30,10, 10,20,40,30,0, 10,10,20,40,20 var n1 = 0; for (var I = 0; I.

Here is a jsfiddle to do what you need. jsfiddle.net/LuQCD/ It abstracts your sum logic into a function so you can pass in any row of the 2d array you want to get the sum of that row.

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