javascript - How to send a base64 image to node js server -


i know how retrieve base64 image canvas using javascript on html page: 

var url =  canvas.todataurl("image/png");    url.replace(/^data:image\/(png|jpg);base64,/, "");

now want send information server , create image. want like: 

router.post('/createimage', function (req, res) {      var base64image = //i need base64 image here      var picpath = path.normalize('./public/images/users/pic.png');      fs.writefile(picpath, url, 'base64', function(err) {       console.log(err);     }); });

how can that?


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