scanner.js
Version:
ScannerJS: JavaScript web scan JPG PDF images from TWAIN WIA scanners in browser (Chrome, Edge, Firefox or IE)
122 lines (103 loc) • 5.07 kB
HTML
<html lang="en">
<head>
<title>Scanner.js demo: Scan JPEG to Form</title>
<meta charset='utf-8'>
<script src="https://asprise.azureedge.net/scannerjs/scanner.js" type="text/javascript"></script>
<script>
//
// Please read scanner.js developer's guide at: http://asprise.com/document-scan-upload-image-browser/ie-chrome-firefox-scanner-docs.html
//
/** Initiates a scan */
function scanToJpg() {
scanner.scan(displayImagesOnPage,
{
"output_settings": [
{
"type": "return-base64",
"format": "jpg"
}
]
}
);
}
/** Processes the scan result */
function displayImagesOnPage(successful, mesg, response) {
if(!successful) { // On error
console.error('Failed: ' + mesg);
return;
}
if(successful && mesg != null && mesg.toLowerCase().indexOf('user cancel') >= 0) { // User cancelled.
console.info('User cancelled');
return;
}
var scannedImages = scanner.getScannedImages(response, true, false); // returns an array of ScannedImage
for(var i = 0; (scannedImages instanceof Array) && i < scannedImages.length; i++) {
var scannedImage = scannedImages[i];
processScannedImage(scannedImage);
}
}
/** Images scanned so far. */
var imagesScanned = [];
/** Processes a ScannedImage */
function processScannedImage(scannedImage) {
imagesScanned.push(scannedImage);
var elementImg = scanner.createDomElementFromModel( {
'name': 'img',
'attributes': {
'class': 'scanned',
'src': scannedImage.src
}
});
document.getElementById('images').appendChild(elementImg);
}
<!-- Previous lines are same as demo-01, below is new addition to demo-02 -->
/** Upload scanned images by submitting the form */
function submitFormWithScannedImages() {
if (scanner.submitFormWithImages('form1', imagesScanned, function (xhr) {
if (xhr.readyState == 4) { // 4: request finished and response is ready
document.getElementById('server_response').innerHTML = "<h2>Response from the server: </h2>" + xhr.responseText;
document.getElementById('images').innerHTML = ''; // clear images
imagesScanned = [];
}
})) {
document.getElementById('server_response').innerHTML = "Submitting, please stand by ...";
} else {
document.getElementById('server_response').innerHTML = "Form submission cancelled. Please scan first.";
}
}
</script>
<style>
img.scanned {
height: 200px; /** Sets the display size */
margin-right: 12px;
}
div#images {
margin-top: 20px;
}
</style>
</head>
<body>
<h2>Scanner.js: Scan JPG to Form and then Submit</h2>
<button type="button" onclick="scanToJpg();">Scan</button>
<div id="images"></div>
<!-- Previous lines are same as demo-01, below is new addition to demo-02 -->
<form id="form1" action="https://asprise.com/scan/applet/upload.php?action=dump" method="POST" enctype="multipart/form-data" target="_blank" >
<input type="text" id="sample-field" name="sample-field" value="Test scan"/>
<input type="button" value="Submit" onclick="submitFormWithScannedImages();">
</form>
<div id="server_response"></div>
<!-- HELP_LINKS_START help links at the bottom -->
<style>
.asprise-footer, .asprise-footer a:visited { font-family: Arial, Helvetica, sans-serif; color: #999; font-size: 13px; }
.asprise-footer a { text-decoration: none; color: #999; }
.asprise-footer a:hover { padding-bottom: 2px; border-bottom: solid 1px #9cd; color: #06c; }
</style>
<div class="asprise-footer" style="margin-top: 48px;">
<a href="http://asprise.com/document-scan-upload-image-browser/direct-to-server-php-asp.net-overview.html" target="_blank" title="Opens in new tab">Scanner.js Homepage</a> |
<a href="http://asprise.com/scan/scannerjs/docs/html/scannerjs-javascript-guide.html" target="_blank" title="Opens in new tab">Developer's Guide to ScannerJs</a> |
<a href="https://github.com/Asprise/scannerjs.javascript-scanner-access-in-browsers-chrome-ie.scanner.js" target="_blank" title="Opens in new tab">Sample code on Github</a>
</div>
<!-- HELP_LINKS_END -->
</body>
</html>