It provides features like easy script installation, automatic update If the request is asynchronous (which is the default), this method returns as soon as the request is sent. Latest version: 1.8.0, last published: 7 years ago. Even though some of the supported browsers have native userscript support, Tampermonkey will give you much more convenience in managing your userscripts. Thus, the property accepts a MIME type or several types separated by a comma. This means that both the web page and the XML file it tries to load, must be located on the same server. If you provide the URL parameter alt=media, then the response includes the file contents in the response body.Downloading content with alt=media only works if the file is stored in Drive. FormData key/value XMLHttpRequest.send() "multipart/form-data". This is a XY problem.A script obtains references to one or multiple files as these are dropped onto a page. I tried this solution. It provides features like easy script installation, automatic update XMLHttpRequest.setRequestHeader() Sets the value of an HTTP request header. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. xmlhttp.open("GET", url, true); xmlhttp.send(); function myFunction(arr) { var out = ""; var i; Read the text file with an XMLHttpRequest. ), but for including the file(s) with submission of a form, you need to add them one way or another -- whether gotten back from URLs or the original Your particular case is showing how it is implemented for XMLHttpRequest (and you'll get identical results if you were to use fetch), but it also applies to other things (such as images loaded onto a