Javascript concatenating numbers, not adding up

Question

It keeps concatenating my numbers into 2111 instead of 5. Why is this? I\'ve tried using parseInt with no luck. res3 btw represents a query into my database that I\'m execut

Answer 1

If the values are strings then they will be concatenated, not added numerically.

Try constructing a number from the string value:

dt_total_hours += Number(res3.fieldByName(dt_cost_per_hour));
//                ^------ Force a number here instead of a string.

Answer 2

Yeah, it's reading them as strings. I find that a dirty, awful hack to get them interpreted as numbers is to take x += y and change it to x += y / 1.0 (or / 1 for integer). Usually does the trick.

Answer 3

you can parse your data according to desired type as follow

dt_total_hours += parseInt(res3.fieldByName(dt_cost_per_hour));

you can also use parseFloat method as well