来自 https://github.com/thread-pond/signature-pad 的 JS 签名板无法在更大的触摸屏笔记本电脑和台式机上工作

Question

I am using the 'jquery.signaturepad.js' library as it appears in the link https://github.com/thread-pond/signature-pad . This library has a signature pad (canvas) for mouse/touch screen signature purpose. The touch screen signature works when when the device is an Ipad/Iphone and other smaller devices but not on desktop/laptop touch screens.

Is there any fix I could make this library to work both using the mouse and the touch screen (if device is touch screen) in all (most) devices?

I have tried it in all browsers and no luck

Answer 1

I finally found why the event OnTouchStart returns undefined for newer/bigger screen laptops.

I have changed my code from canvas.ontouchstart = function(e) {} // which returns undefined to

canvas.eddEventListener('touchstart', function(e) {}