Get total number of items on Json object?

In addition to kieran's answer, apparently, modern browsers have an Object.keys function. In this case, you could do this:

Object.keys(jsonArray).length;

More details in this answer on How to list the properties of a javascript object

That's an Object and you want to count the properties of it.

Object.keys(jsonArray).length

References:

• Object.keys.
• Kangax's compat table.