移动端watch监听解决键盘弹出时页面被顶起问题

            data: {
                isShow: true, // 底部 v-show 状态值
                screenHeight: window.innerHeight, // 这里是给到了一个默认值
                originHeight: window.innerHeight, // 默认高度在watch里拿来做比较
            },
            mounted: function () {
                const that = this;
                window.onresize = () => {
                    return (() => {
                        that.screenHeight = window.innerHeight;
                    })();
                };
            },
            watch: {
                screenHeight: function (newValue) {
                    console.log('newValue', newValue);
                    if (this.originHeight > newValue) {
                        this.isShow = false;
                    } else {
                        this.isShow = true;
                    }
                },
            },