Render a retrieved image using a blob: URL

by Virginie LE GUEN BERTHEAUME

HTML

<img id="photo"/>

JavaScript

// Image returned should be an ArrayBuffer.
var xhr = new XMLHttpRequest();

xhr.open( "GET", "https://placekitten.com/500/200", true );

// Ask for the result as an ArrayBuffer.
xhr.responseType = "arraybuffer";

xhr.onload = function( e ) {
    // Obtain a blob: URL for the image data.
    var arrayBufferView = new Uint8Array( this.response );
    var blob = new Blob( [ arrayBufferView ], { type: "image/jpeg" } );
    var urlCreator = window.URL || window.webkitURL;
    var imageUrl = urlCreator.createObjectURL( blob );
    var img = document.querySelector( "#photo" );
    img.src = imageUrl;
};

xhr.send();