From 37026376f1d027a099e6590ab317b214ac70c08f Mon Sep 17 00:00:00 2001
From: lostsory <2462393505@qq.com>
Date: Sat, 30 Nov 2019 09:58:46 +0800
Subject: [PATCH 1/2] =?UTF-8?q?h5=20image=E5=9C=A8unmount=E6=97=B6?=
 =?UTF-8?q?=E5=8F=96=E6=B6=88IntersectionObserver=E7=9B=91=E5=90=AC?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 packages/taro-components/src/components/image/index.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/packages/taro-components/src/components/image/index.js b/packages/taro-components/src/components/image/index.js
index 51ebbdfaa1a7..f9ee7581c099 100644
--- a/packages/taro-components/src/components/image/index.js
+++ b/packages/taro-components/src/components/image/index.js
@@ -13,11 +13,12 @@ class Image extends Nerv.Component {
       aspectFillMode: 'width'
     }
     this.imageOnLoad = this.imageOnLoad.bind(this)
+    this.observer = {}
   }
 
   componentDidMount () {
     if (this.props.lazyLoad) {
-      const lazyImg = new IntersectionObserver((entries, observer) => {
+      this.observer = new IntersectionObserver((entries, observer) => {
         // 异步 api 关系
         if (entries[entries.length - 1].isIntersecting) {
           this.setState({ isLoaded: true }, () => {
@@ -28,11 +29,12 @@ class Image extends Nerv.Component {
       }, {
         rootMargin: '300px 0px'
       })
-      lazyImg.observe(this.imgRef)
+      this.observer.observe(this.imgRef)
     }
   }
 
   componentWillUnMount () {
+    this.observer.disconnect && this.observer.disconnect()
   }
 
   imageOnLoad (e) {

From a816f2e1210039fe07ad13d5f932389db6a747f1 Mon Sep 17 00:00:00 2001
From: lostsory <2462393505@qq.com>
Date: Tue, 3 Dec 2019 15:58:58 +0800
Subject: [PATCH 2/2] =?UTF-8?q?=E5=88=A0=E9=99=A4=E6=97=A0=E7=94=A8?=
 =?UTF-8?q?=E4=BB=A3=E7=A0=81?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 packages/taro-components/src/components/image/index.js | 1 -
 1 file changed, 1 deletion(-)

diff --git a/packages/taro-components/src/components/image/index.js b/packages/taro-components/src/components/image/index.js
index f9ee7581c099..935153d48584 100644
--- a/packages/taro-components/src/components/image/index.js
+++ b/packages/taro-components/src/components/image/index.js
@@ -22,7 +22,6 @@ class Image extends Nerv.Component {
         // 异步 api 关系
         if (entries[entries.length - 1].isIntersecting) {
           this.setState({ isLoaded: true }, () => {
-            lazyImg.unobserve(this.imgRef)
             Nerv.findDOMNode(this).children[0].src = this.props.src
           })
         }