JavaScript Enumerations Automatic Enumeration Value
Example
5.1
This Example demonstrates how to automatically assign a value to each entry in an enum list. This will prevent two enums from having the same value by mistake. NOTE: Object.freeze browser support
var testEnum = function() {
// Initializes the enumerations
var enumList = [
"One",
"Two",
"Three"
];
enumObj = {};
enumList.forEach((item, index)=>enumObj[item] = index + 1);
// Do not allow the object to be changed
Object.freeze(enumObj);
return enumObj;
}();
console.log(testEnum.One); // 1 will be logged
var x = testEnum.Two;
switch(x) {
case testEnum.One:
console.log("111");
break;
case testEnum.Two:
console.log("222"); // 222 will be logged
break;
}
