Wie den Schlüssel eines Objekts verwenden

Question

Wenn es:

var obj = {a: 'This is a', b: 'This is b', c: 'This is c'} 
var select = 'b'; 

Wie kann ich so etwas wie dieses machen zu arbeiten:

console.log(obj.select); // This would output: This is b 

Answer 1

Verwenden bracket notation

var obj = { 
 
    a: 'This is a', 
 
    b: 'This is b', 
 
    c: 'This is c' 
 
} 
 
var select = 'b'; 
 
console.log(obj[select]);