JSFiddle - React, Tailwind, and code Playground

by alexdickson

JavaScript

(function() {

    var extToMimes = {
        'img': 'image/jpeg',
        'png': 'image/png'
    }

    window.getMimeByExt = function(ext) {
        if (extToMimes.hasOwnProperty(ext)) {
            return extToMimes[ext];
        }
        return false;
    }

})();

document.body.innerHTML = getMimeByExt('png');