Javascript-Node.Js reaching dynamic body elements

Question

I have HTML input elements with names like A[1], A[2], A[3]. I want to catch them in express this way:

var optcount = i + 1;
var columnA=req.body['A['+optcount+']'];

However it does not work.

If I have names like A1, then this works:

var columnA=req.body['A'+optcount];

Any suggestions?

Answer 1

For a quick hack,

var optcount = i + 1;

var prop = 'A[' + optcount + ']';

var columnA=req.body[prop];

Should work.

You should be escaping characters to have a better optimized solution, look at these -> Is there a RegExp.escape function in Javascript? and How to escape regular expression in javascript?