邮箱已绑定小程序。怎么解除？我想绑定微信

this.createSelectorQuery().select("#footer").boundingClientRect((res) => {           if (!res) return;           let top = res.top;           let height = windowHeight - res.height;           console.log(res)           console.log(top)           console.log(height)           if (top < height) {             console.log('进来了')             this.setData({               fix: true             })           }         }).exec(); [图片]