readExif.js

var EXIF = require('exif-js');
var $input = $('#uploadImage');

function base64ToArrayBuffer (base64) {
    base64 = base64.replace(/^data\:([^\;]+)\;base64,/gmi, '');
    var binaryString = atob(base64);
    var len = binaryString.length;
    var bytes = new Uint8Array(len);
    for (var i = 0; i < len; i++) {
        bytes[i] = binaryString.charCodeAt(i);
    }
    return bytes.buffer;
}

$input.on('change', function() {
    var file = this.files[0];
    var reader = new FileReader();

    reader.onload = function (e) {
        var exif = EXIF.readFromBinaryFile(base64ToArrayBuffer(this.result)), html = [];
        html.push('<div>');
        for(var key in exif) {
           var val = exif[key];
           html.push('<p>', key, '&nbsp;&nbsp;:&nbsp;&nbsp;<em>');
           html.push(val, '</em></p>');
        }
        html.push('</div>');
        document.getElementById('imgInfo').innerHTML = html.join('');

        var preview = '<div class="bg" style="background-image:url(' + e.target.result + ')"></div>';
        $(preview).insertAfter('#uploadImage');
    }
    reader.readAsDataURL(file);
    //reader.readAsBinaryString(file);
})