uni-app實現掃碼

主要用的就是uni.scanCode({})這個函數，
代碼如下：

            scan1() {
                 let that = this;
                 // 允許從相機和相冊掃碼
                 uni.scanCode({
                     success: function(res) {
                         that.result1 = res.result;
                     }
                 });
             },
             scan2() {
                 let that = this;
                 // 只允許通過相機掃碼
                 uni.scanCode({
                     onlyFromCamera: true,
                     success: function(res) {
                         that.result2 = res.result;
                         console.log('條碼類型：' + res.scanType);
                         console.log('條碼內容：' + res.result);
                     }
                 });
             },
             scan3() {
                 let that = this;
                 // 調起條碼掃描
                 uni.scanCode({
                     scanType: 'barCode',
                     success: function (res) {
                         that.result3 = res.result;
                         console.log('條碼類型：' + res.scanType);
                         console.log('條碼內容：' + res.result);
                     }
                 });
             }