Angular JS - request in order to get an image

Now AngularJS respects the XHR (XMLHttpRequest) standard and you can use plain angular JS $http combined with the HTML FileReader.

The trick is to get the data as a blob which you pass to the reader.

var url = 'http://'; // enter url here$http.get(url,{responseType: "blob"}).    success(function(data, status, headers, config) {        // encode data to base 64 url        fr = new FileReader();        fr.onload = function(){            // this variable holds your base64 image data URI (string)            // use readAsBinary() or readAsBinaryString() below to obtain other data types            console.log( fr.result );        };        fr.readAsDataURL(data);    }).    error(function(data, status, headers, config) {        alert("The url could not be loaded...\n (network error? non-valid url? server offline? etc?)");    });

I know this isn't an answer so I'm not sure if it's even worth posting. It's similar to what you're doing but in the opposite direction! But here goes:

I'm posting an image data string from a canvas element (canvas.toDataURL("image/png")) to the server (node + express), saving it as a png on the server, then serving that image as a URL to a third party API.

Here's the original XMLHttpRequest I had in an angular.js controller:

var dataURL = encodeURIComponent(canvas.toDataURL("image/png"));var url = "/camera/" + name + "/";var xhr = new XMLHttpRequest();xhr.onreadystatechange = response;xhr.open("POST", url, true);xhr.setRequestHeader("Content-type", "application/x-www-form-urlencoded");xhr.send("image=" + dataURL);

Here it is converted into an angular.js $http service:

var dataURL = encodeURIComponent(canvas.toDataURL("image/png"));var url = "/camera/" + name + "/";var config = {  method: 'POST',  url: url,  data: $.param({ image: dataURL }),  headers: {'Content-Type': 'application/x-www-form-urlencoded'}};$http(config);

express function to save the image on the server:

app.post('/camera/:username', function (req) {  var username = req.params.username,    image = decodeURIComponent(req.body.image),    binaryData;  var base64Data = image.replace(/^data:image\/png;base64,/, "");  base64Data += base64Data.replace('+', ' ');  binaryData = new Buffer(base64Data, 'base64').toString('binary');  fs.writeFile("public/camera-images/" + username + ".png", binaryData, "binary");});