I recieve a number type = 3 and have to check if it exists in this enum:  export const MESSAGE_TYPE = {     INFO: 1,     SUCCESS: 2,     WARNING: 3,     ERROR: 4, };   The best way I found is by getting all Enum Values as an array and using indexOf o...

So I have this in the javascript for my page:  var TEST_ERROR  = {         'SUCCESS'   :   0,         'FAIL'      :   -1,         'ID_ERROR'  :   -2       };   And perform tests on functions in the page like so:  function test...

In Java 1.7, prior to it's removal, one could use 'Packages' to access Java Enums in the following way from Javascript on an HTML page viewed a browser:  var enumvar1 = document.appletid.Packages.com.mycompany.MyClass$MyEnumYesNo.YES var...

I'd like to write something like this in Typescript:  export function stringToEnum<T>(enumObj: T, str: string): keyof T {     return enumObj[str]; }   and use it as follows:  enum MyEnum {   Foo }  stringToEnum<MyEnum>(MyEnum, 'Fo...

I wanted to introduce some enum to my controller logic for some type safety, so for example I created something like this:  var app = angular.module('myApp', []); var StateEnum = Object.freeze({"login":1, "logout":2}) function...

What is the preferred syntax for defining enums in JavaScript? Something like:  my.namespace.ColorEnum = {     RED : 0,     GREEN : 1,     BLUE : 2 }  // later on  if(currentColor == my.namespace.ColorEnum.RED) {    // whatever }   Or is there a more...

I have the following "Enum" in javascript to indicate the state of my application:  var State = {    STATE_A: 0,    STATE_B: 1,    STATE_C: 2    //... }   Now, I want each state to have a "sub-state".  So for example, STATE_B could be...

I have an enum:  var a = {X: 0, Y: 1};   And, I want to create another enum from the values of the first one.  Something like this:  var b = {a.X: "foo", a.Y: "bar"};   Doing this gives me a SyntaxError: Unexpected token .  Is there a...

I have three buttons that shows three different lists, so I wanted to add enums to help me decide which list to present using ngSwitch, but I'm getting an error.  This is the TypeScript:  export enum ListType {People, Cars}  export class AppCmp i...

I have got an enumeration in C# ie something like Category.cs. In a dropdownlist we are binding values. So if the user selects some specific value in dropdown it will hide one div. So i want to get the enumeration value in javascript ie want to compa...