get value from json with dynamic key -

my jscript is:

var t={'color':'red'}; // dynamic json data. for(n in t) {     alert(n) } 

here, alert gives json key color. how value?

note: json dynamic.

var t={'color':'red'}; // dynamic json data. for(n in t) {     alert(n);// n = key     var val =t[n];// value key n  }