JSFiddle - React, Tailwind, and code Playground

by junkoro

JavaScript

var aTag = document.createElementNS("http://www.w3.org/1999/xhtml", "a");
var isSaveOK = "download" in aTag;
if (isSaveOK && window.File && window.Blob) {
    alert("対応ブラウザ");
} else {
    alert("非対応ブラウザ");    
}