json - Access value from JavaScript object via array-string -

my problem have json-object , array here example.

var object = {  'items':['entry1','entry2'] }

i want access 'entry2' on constant string receive , shouldn't changed.

var string = 'items[1]';

the way i'm solving problem on eval function...

eval('object.'+string);

this returns me entry2.

is there other way achieve without using eval()? object[string] or object.string

supposing string same form, extract parts using regex :

var m = string.match(/(\w+)\[(\d+)\]/); var item = object[m[1]][+m[2]];

explanation :

the regex builds 2 groups :

(\w+) : string \[(\d+)\] : digits between brackets

and groups @ index 1 , 2 of array returned match.

+something parses number. it's not strictly needed here array accepts string if can converted find code more readable when conversion explicited.

Brazell