JavaScript Printing an enum variable


Example

After defining an enum using any of the above ways and setting a variable, you can print both the variable's value as well as the corresponding name from the enum for the value. Here's an example:

// Define the enum
var ColorsEnum = { WHITE: 0, GRAY: 1, BLACK: 2 }
Object.freeze(ColorsEnum);
// Define the variable and assign a value
var color = ColorsEnum.BLACK;
if(color == ColorsEnum.BLACK) {
   console.log(color);    // This will print "2"
   var ce = ColorsEnum;
   for (var name in ce) {
     if (ce[name] == ce.BLACK)
       console.log(name);    // This will print "BLACK"
   } 
}