qrcode二维码生成插件 安装插件 ``` npm install qrcode ``` 页面使用 ``` <template> <div> <canvas id="canvas"></canvas> </div> </template> <script> import QRCode from 'qrcode' export default { data () { return { } }, // components: { // QRCode: QRCode // }, methods: { useqrcode () { var canvas = document.getElementById('canvas') QRCode.toCanvas(canvas, 'http://www.ui-china.cn', function (error) { if (error) console.error(error) console.log('success!') }) } }, mounted () { this.useqrcode() } } </script> <style lang="less" scoped> #canvas{ width: 200px!important; height: 200px!important; } </style> ```