增加跨端通讯，全局通知容错能力

Tevin

2023-03-20 c4911f853e9c1c3ed6d1aeca934479e9043ec4d1

 plugins/qrcode/CQRCode.vue

@@ -33,7 +33,9 @@
        },
    },
    data() {
        return {};
        return {
            lastContent: '',
        };
    },
    methods: {
        _renderQRCode(canvasDom) {
@@ -58,9 +60,14 @@
            const canvasBox = $(this.$refs.canvas.$el);
            const finderTimer = setInterval(() => {
                const canvasDom = canvasBox.find('canvas');
                if (canvasDom.length > 0) {
                    this._renderQRCode(canvasDom[0]);
                if (canvasDom.length === 0) {
                    return;
                }
                if (this.lastContent === this.content) {
                    return;
                }
                this._renderQRCode(canvasDom[0]);
                this.lastContent = this.content;
            }, 10);
        } else {
            // TODO: 小程序中获取canvas