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javascriptreactjsconstants

React create constants file

How to create constants file like: key - value in ReactJs,

ACTION_INVALID = "This action is invalid!"

and to use that in other components

errorMsg = myConstClass.ACTION_INVALID;
Solution

  • I'm not entirely sure I got your question but if I did it should be quite simple:

    From my understanding you just want to create a file with constants and use it in another file.

    fileWithConstants.js:

    export const ACTION_INVALID = "This action is invalid!"
export const CONSTANT_NUMBER_1 = 'hello I am a constant';
export const CONSTANT_NUMBER_2 = 'hello I am also a constant';

    fileThatUsesConstants.js:

    import * as myConstClass from 'path/to/fileWithConstants';

const errorMsg = myConstClass.ACTION_INVALID;

    If you are using react you should have either webpack or packager (for react-native) so you should have babel which can translate your use of export and import to older js.