init

xhs-mini-demos/api-case/memory-warn/memory-warn.css

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+.page-section {
+  margin-top: 100px;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  width: 100%;
+  padding: 0 25px;
+  box-sizing: border-box;
+}
+.page-body-title {
+  font-size: 30px;
+  line-height: 100px;
+}
+.page-body-text {
+  color: #bbb;
+  font-size: 14px;
+  line-height: 20px;
+  margin: 0 0 50px 0;
+  text-align: center;
+}
+.page-body-button {
+  width: 100%;
+}

xhs-mini-demos/api-case/memory-warn/memory-warn.js

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+Page({
+  onShareAppMessage() {
+    return {
+      title: 'memory-warn',
+      path: 'package/API/pages/memory-warn/memory-warn',
+    };
+  },
+
+  data: {
+    value: '',
+    memory: [],
+  },
+  resetValue() {
+    this.setData({ value: '' });
+  },
+  bindSubscribe() {
+    this.resetValue();
+    xhs.onMemoryWarning(e => {
+      this.setData({ value: JSON.stringify(e) });
+    });
+    this.setData({ value: '订阅成功' });
+  },
+  bindUnSubscribe() {
+    this.resetValue();
+    xhs.offMemoryWarning(() => {
+      this.setData({ value: '取消成功' });
+    });
+  },
+  bindMemory() {
+    if (this.handle) {
+      clearInterval(this.handle);
+    } else {
+      this.handle = setInterval(() => {
+        const { memory } = this.data;
+        for (let i = 0; i < 100; i++) {
+          memory.push({ name: 'test', age: 20 });
+        }
+        this.setData({ memory });
+      }, 1000);
+    }
+  },
+});

xhs-mini-demos/api-case/memory-warn/memory-warn.json

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+{
+  "navigationBarTitleText": "memory-warn",
+  "usingComponents": {
+      "showbox": "../../common/component/showbox/index",
+      "box": "../../common/component/container/index"
+  }
+}

xhs-mini-demos/api-case/memory-warn/memory-warn.xhsml

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+<view class="container">
+  <showbox title="默认">
+    <box>
+      <view>
+        <text>响应：{{value}}</text>
+        <text>数组长度：{{memory.length}}</text>
+        <button bindtap="bindSubscribe">订阅内存告警</button>
+        <button bindtap="bindUnSubscribe">取消订阅</button>
+        <button bindtap="bindMemory">点击按钮，消耗内存</button>
+      </view>
+    </box>
+  </showbox>
+</view>