| 提交 | 用户 | 时间 | ||
| 0cceb6 | 1 | <template> |
| Y | 2 | <el-input |
| 3 | οnkeyup="this.value=this.value.replace(/\D|/g,'')" | |
| 4 | clearable | |
| 5 | maxlength="116" | |
| 6 | v-model="codeValue" | |
| 7 | placeholder="请输入条形码" | |
| 8 | /> | |
| 9 | </template> | |
| 10 | <script> | |
| 11 | export default { | |
| 12 | data(){ | |
| 13 | return { | |
| 14 | codeValue: "", | |
| 15 | code: "", | |
| 16 | lastTime: "", | |
| 17 | nextTime: "", | |
| 18 | lastCode: "", | |
| 19 | nextCode: "", | |
| 20 | dtmainId: "", | |
| 21 | }; | |
| 22 | }, | |
| 23 | created() { | |
| 24 | window.document.onkeypress = (e) => { | |
| 25 | if (window.event) { | |
| 26 | // IE | |
| 27 | this.nextCode = e.keyCode; | |
| 28 | } else if (e.which) { | |
| 29 | // Netscape/Firefox/Opera | |
| 30 | this.nextCode = e.which; | |
| 31 | } | |
| 32 | if (e.which === 13) { | |
| 33 | // 键盘回车事件 | |
| 34 | if (this.code.length < 3) return; // 扫码枪的速度很快，手动输入的时间不会让code的长度大于2，所以这里不会对扫码枪有效 | |
| 35 | ||
| 36 | //console.log("扫码结束。"); | |
| 37 | //console.log("条形码：", this.code); | |
| 38 | this.parseQRCode(this.code); // 获取到扫码枪输入的内容，做别的操作 | |
| 39 | this.lastCode = ""; | |
| 40 | this.lastTime = ""; | |
| 41 | return; | |
| 42 | } | |
| 43 | this.nextTime = new Date().getTime(); | |
| 44 | if (!this.lastTime && !this.lastCode) { | |
| 45 | this.code = ""; // 清空上次的条形码 | |
| 46 | this.code += e.key; | |
| 47 | //console.log("扫码开始---", this.code); | |
| 48 | } | |
| 49 | if (this.lastCode && this.lastTime && this.nextTime - this.lastTime > 500) { | |
| 50 | // 当扫码前有keypress事件时,防止首字缺失 | |
| 51 | this.code = e.key; | |
| 52 | //console.log("防止首字缺失。。。", this.code); | |
| 53 | } else if (this.lastCode && this.lastTime) { | |
| 54 | this.code += e.key; | |
| 55 | //console.log("扫码中。。。", this.code); | |
| 56 | } | |
| 57 | this.lastCode = this.nextCode; | |
| 58 | this.lastTime = this.nextTime; | |
| 59 | }; | |
| 60 | }, | |
| 61 | methods: { | |
| 62 | parseQRCode(code) { | |
| 63 | this.codeValue = code; | |
| 64 | }, | |
| 65 | }, | |
| 66 | } | |
| 67 | </script> | |
| 68 | <style scoped lang="scss"> | |
| 69 | ||
| 70 | </style> | |
| 71 | ||
| 72 | ||
| 73 | ||
| 74 | ||
| 75 | ||
