Direct Print after clicking

Question

I am using a JS function in my POS website which is:

<script type="text/javascript">
function printlayer(layer){
  var generator=window.open(",'name,");
  var layertext=document.getElementById(layer);
  generator.document.write(layertext.innerHTML.replace('Print Me'));
  generator.document.close();
  generator.print();
  generator.close();
}

When I click on Print button, it opens a new Print tab on screen but I want to print directly. Suppose I clicked on print, it should print directly. "IT SHOULD NOT OPEN THE PRINT TAB". I am using Thermal Receipt Printer: GPrinter Modal is: GP80160II Paper width: 80mm Print Speed: 160mm/sec.

This Picture is before clicking Print:

This Picture is After clicking (That I don't want): Please Help me. I am not able to do this. Thanks in advance

Answer 1

If you are using IE browser then this can be achieved. But in firefox and chrome we can't bypass the dialogue box. You can avoid the print dialog from any application by using some cloud printing REST API.

Select a printer and silently print(SO)

https://developers.google.com/cloud-print/docs/appInterfaces

https://www.printnode.com/docs/api/curl/