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Vue.component("qr", { template: '<div ref="qr" v-show="this.value !== \'\'"></div>', name: 'qr', props: { value: [String, Number], width: { "type": Number, "default": function () { return 128; } } }, watch: { value: { immediate: true, handler: function (value) { if (this.qrcode) { this.qrcode.makeCode(value + ""); } } } }, mounted: function () { this.qrcode = new QRCode(this.$refs.qr, { text: this.value + "", width: this.width, height: this.width }); }, methods: { handleChange: function (e) { this.$emit("change", this.checked, e); } }});
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