条码枪扫码后input会自动提交 （亲测有效）可以区分手动输入与条码枪扫码

var lastTime = null, nextTime = null, codess = ''; //条码枪扫码 var myInputOrder = document.getElementById('code_new'); myInputOrder.onkeydown = function (e) { let keycode = e.keyCode || e.which || e.charCode; nextTime = new Date(); if (keycode === 13) { inputisbns = myInputOrder.value; if (lastTime && (nextTime - lastTime < 30)) {//扫码枪 if(inputisbns){ 相关操作 } } else{//手动输入 if(inputisbns){ 相关操作 } } codess = ''; lastTime = null; e.preventDefault(); } else { if (!lastTime) { codess = String.fromCharCode(keycode); } else { if (nextTime - lastTime < 30) { codess += String.fromCharCode(keycode); } else { codess = ''; } } lastTime = nextTime; } };

https://www.jianshu.com/p/3019858e3cad