It's just a web page. Make sure the textbox you want the result in has focus right away, and just use the barcode scanner like a keyboard.
You should be able to configure the scanner so it also "presses enter" which will allow your form to be submitted.
This is one piece of hardware they tended to get right - nothing fancy required.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…