TypeError: Object doesn't support this action in IE 11
To paraphrase the link, IE 11 does NOT support new File() constructor, so you'll have to use a blob instead. Here is a basic example:
var myArr = ["Hello", "World", "123", "Howdy"];var b = new Blob([JSON.stringify(myArr)], {type: "text/plain;charset=utf-8"});window.navigator.msSaveBlob(b, "OutputFile.txt");And now you should receive a download prompt.