js文字转二维码, 纯前端

{{ time }}

示例效果如下

示例代码如下

<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>输入文字转二维码</title>
    <style>
        #app>div {
            text-align: center;
        }
    </style>
</head>

<body>
    <div id="app" style="padding:30px;">
        <div style="font-size:30px;color:#999;">输入文字转二维码</div>
        <div style="padding:30px 0;">
            <textarea @keyup="update" v-model="word" style="width:100%;font-size:30px;"></textarea>
        </div>
        <div id="qrcode"></div>
    </div>
</body>
<script src="//cdn.jsdelivr.net/npm/qrcanvas@3"></script>
<script src="//static.class4ever.com/vuejs/v2.6.10/vue.min.js"></script>
<script>
    const app = new Vue({
        data: {
            word: 'I love you.'
        },
        methods: {
            //更新二维码
            update: function () {
                let obj = document.getElementById('qrcode')
                let canvas = qrcanvas.qrcanvas({ data: this.word })
                obj.innerHTML = ''
                if (this.word) obj.appendChild(canvas);
            }
        },
        //启动运行
        mounted: function () {
            this.update()
        }
    }).$mount('#app')
</script>

</html>