扫码枪

扫码枪

document.onkeydown = (e)=> {
                let nextCode,nextTime = '';
                let lastTime = this.lastTime;
                let code = this.code;
                if (window.event) {// IE
                    nextCode = e.keyCode;
                } else if (e.which) {// Netscape/Firefox/Opera
                    nextCode = e.which;
                }
                nextTime = new Date().getTime();
                //字母上方 数字键0-9 对应键码值 48-57; 数字键盘 数字键0-9 对应键码值 96-105
                if((nextCode>=48&&nextCode<=57)  || (nextCode>=96&&nextCode<=105)){
                    let codes = {'48':48,'49':49,'50':50,'51':51,'52':52,'53':53,'54':54,'55':55,'56':56,'57':57,
                        '96':48,'97':49,'98':50,'99':51,'100':52,'101':53,'102':54,'103':55,'104':56,'105':57
                    };
                    nextCode = codes[nextCode];
                    nextTime = new Date().getTime();
                }
                // 第二次输入延迟两秒，删除之前的数据重新计算
                if(nextTime && lastTime && nextTime-lastTime>2000){
                    code = String.fromCharCode(nextCode);
                }else{
                    code += String.fromCharCode(nextCode)
                }
                // 保存数据
                this.nextCode = nextCode;
                this.lastTime = nextTime;
                this.code = code;

                // 键入Enter
                if(e.which == 13) {
                    // 判断 code 长度（这里就获取到条码值了，以下业务*发挥）

                    code = $.trim(code);
                    console.log(code);
                    if(code.lastIndexOf("d")>-1){
                        // debugger
                        code = code.substring(code.lastIndexOf("d")+1);

                    }
                    if (code!=undefined&&code!=''){
                        // table.reload('table_product',{
                        //     //请求地址
                        //     url:'/goodsmanager/getGoddsListBygoodsBarcode',
                        //     method:'get',
                        //     page: {
                        //         curr:1//重新从第一页开始
                        //     },where:{
                        //         //按条件查找
                        //         goodsBarcode:code
                        //     }
                        // });
                    	getGoodsInfoByCode(code);
                    }else{
                        layui.layer.msg('条形码获取失败！', {icon: 5, time: 1000});
                    }
                    // getData();
                    // backMoneyShow();
                    //键入回车务必清空code值
                    this.code = '';
                    return false;
                }
            }