Get value of first object property
var value = obj[Object.keys(obj)[0]];
Object.keys
is included in javascript 1.8.5. Please check the compatibility here http://kangax.github.io/es5-compat-table/#Object.keys
Edit:
This is also defined in javascript 1.8.5 only.
var value = obj[Object.getOwnPropertyNames(obj)[0]];
Reference:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Working_with_Objects?redirectlocale=en-US&redirectslug=JavaScript%2FGuide%2FWorking_with_Objects#Enumerating_all_properties_of_an_object