gradle复制代码    buildFeatures {
        aidl true
    }

gradle复制代码plugins {
    id 'com.android.application'
}

android {
    namespace 'com.example.aidl'
    compileSdk 34

    defaultConfig {
        applicationId "com.example.aidl"
        minSdk 24
        targetSdk 34
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    buildFeatures {
        aidl true
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

dependencies {

    implementation 'androidx.appcompat:appcompat:1.6.1'
    implementation 'com.google.android.material:material:1.9.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
    testImplementation 'junit:junit:4.13.2'
    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
}

ini复制代码<application
    android:icon="icon"
    android:roundIcon="icon">
    <activity
       // ...
    </activity>

    <activity-alias
        android:name=".MainActivityAlias"
        android:icon="icon_2"
        android:roundIcon="icon_2"
        android:targetActivity=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity-alias>
</application>

kotlin复制代码class IconChangeReceiver : BroadcastReceiver() {

    override fun onReceive(context: Context?, intent: Intent?) {
        if (intent?.action == "com.example.app.ACTION_CHANGE_ICON") {
            changeAppIcon(context)
        }
    }
    
    private fun changeAppIcon(context: Context?) {
        context?.let {
            // This is where the magic happens. We'll get to this in a bit!
        }
    }
}

ini复制代码<receiver
    android:name=".IconChangeReceiver"
    android:enabled="true"
    android:exported="true">
    <intent-filter>
        <action android:name="com.example.app.ACTION_CHANGE_ICON" />
    </intent-filter>
</receiver>

kotlin复制代码class IconChangeReceiver : BroadcastReceiver() {

    override fun onReceive(context: Context?, intent: Intent?) {
        if (intent?.action == "com.example.app.ACTION_CHANGE_ICON") {
            changeAppIcon(context)
        }
    }
    
    private fun changeAppIcon(context: Context?) {
        context?.let { ctx ->
            // Example: Conditionally select a different alias based on some criteria
            val aliasToEnable = when (someCondition) {
                true -> ctx.getString(R.string.alias_1)
                false -> ctx.getString(R.string.alias_2)
            }
            
            val aliasToDisable = when (aliasToEnable) {
                ctx.getString(R.string.alias_1) -> ctx.getString(R.string.alias_2)
                else -> ctx.getString(R.string.alias_1)
            }
            
            // Change the app icon by enabling one alias and disabling the other
            val packageManager = ctx.packageManager
            enableComponent(ctx, packageManager, aliasToEnable)
            disableComponent(ctx, packageManager, aliasToDisable)
        }
    }

    private fun enableComponent(
        context: Context, 
        packageManager: PackageManager, 
        componentNameString: String
    ) {
        val componentName = ComponentName(context, componentNameString)
        
        packageManager.setComponentEnabledSetting(
            componentName,
            PackageManager.COMPONENT_ENABLED_STATE_ENABLED,
            PackageManager.DONT_KILL_APP
        )
    }

    private fun disableComponent(
        context: Context, 
        packageManager: PackageManager, 
        componentNameString: String
    ) {
        val componentName = ComponentName(context, componentNameString)
        
        packageManager.setComponentEnabledSetting(
            componentName,
            PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
            PackageManager.DONT_KILL_APP
        )
    }
}

scss复制代码val iconChangeIntent = Intent("com.example.app.ACTION_CHANGE_ICON")
sendBroadcast(iconChangeIntent)

ini复制代码val iconChangeIntent = Intent("com.example.app.ACTION_CHANGE_ICON")
context.sendBroadcast(iconChangeIntent)

shell复制代码flutter create --template=plugin --platforms=android,ios -i swift -a kotlin 项目名

# 如：
# flutter create --template=plugin --platforms=android,ios -i swift -a kotlin video_cache

diff复制代码#
# To learn more about a Podspec see http://guides.cocoapods.org/syntax/podspec.html.
# Run `pod lib lint video_cache.podspec` to validate before publishing.
#
Pod::Spec.new do |s|
  s.name             = 'video_cache'
  s.version          = '0.0.1'
  s.summary          = 'A new Flutter plugin project.'
  s.description      = <<-DESC
A new Flutter plugin project.
                       DESC
  s.homepage         = 'http://example.com'
  s.license          = { :file => '../LICENSE' }
  s.author           = { 'Your Company' => 'email@example.com' }
  s.source           = { :path => '.' }
  s.source_files = 'Classes/**/*'
  s.dependency 'Flutter'
  s.platform = :ios, '11.0'

  # Flutter.framework does not contain a i386 slice.
  s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES', 'EXCLUDED_ARCHS[sdk=iphonesimulator*]' => 'i386' }
  s.swift_version = '5.0'

+  # KTVHTTPCache
+  s.dependency 'KTVHTTPCache', '~> 3.0.0'
end

diff复制代码...
android {
    ...

    dependencies {
        testImplementation 'org.jetbrains.kotlin:kotlin-test'
        testImplementation 'org.mockito:mockito-core:5.0.0'
+        implementation 'com.danikula:videocache:2.7.1'
    }

    ...
}

diff复制代码// build.gradle

allprojects {
    repositories {
+        maven { url "https://jitpack.io" }
+        maven { url 'https://maven.aliyun.com/repository/public' }
        google()
        mavenCentral()
    }
}
...

diff复制代码// settings.gradle

pluginManagement {
    ...
    repositories {
+        maven { url "https://jitpack.io" }
+        maven { url 'https://maven.aliyun.com/repository/public' }
        google()
        mavenCentral()
        gradlePluginPortal()
    }
}
...

yaml复制代码dev_dependencies:
  pigeon: ^17.3.0

shell复制代码.
├── lib
│   ├── ...
│   └── ...
├── pigeons
│   ├── cache.dart
│   └── ...
├── ...

dart复制代码import 'package:pigeon/pigeon.dart';

// https://github.com/flutter/packages/blob/main/packages/pigeon/example/README.md
@ConfigurePigeon(PigeonOptions(
  dartOut: 'lib/plugin/pigeon.g.dart',
  kotlinOut:
      'android/src/main/kotlin/com/lxf/video_cache/VideoCacheGeneratedApis.g.kt',
  kotlinOptions: KotlinOptions(
    // https://github.com/fluttercommunity/wakelock_plus/issues/18
    errorClassName: "LXFVideoCacheFlutterError",
  ),
  swiftOut: 'ios/Classes/LXFVideoCacheGeneratedApis.g.swift',
))
@HostApi()
abstract class LXFVideoCacheHostApi {
  /// 转换为缓存代理URL
  String convertToCacheProxyUrl(String url);
}

shell复制代码flutter pub run pigeon --input pigeons/cache.dart

shell复制代码Type FlutterError is defined multiple times

dart复制代码@ConfigurePigeon(PigeonOptions(
  ...
  kotlinOptions: KotlinOptions(
    // https://github.com/fluttercommunity/wakelock_plus/issues/18
    errorClassName: "LXFVideoCacheFlutterError"
  ),
  ...
))

shell复制代码cd example/ios 
pod install --repo-update

swift复制代码// VideoCachePlugin.swift

import Flutter
import UIKit
import KTVHTTPCache

// 创建插件时自动生成的类
public class VideoCachePlugin: NSObject, FlutterPlugin {
  public static func register(with registrar: FlutterPluginRegistrar) {
    // 注册实现
    LXFVideoCacheHostApiSetup.setUp(
      binaryMessenger: registrar.messenger(), 
      api: LXFVideoCacheHostApiImplementation()
    )
  }
}

class LXFVideoCacheHostApiImplementation: LXFVideoCacheHostApi {
  /// 是否可以代理
  private var canProxy: Bool?
  
  func convertToCacheProxyUrl(url: String) throws -> String {
    // 还未试过开启代理服务
    if (self.canProxy == nil) {
      self.canProxy = ((try? KTVHTTPCache.proxyStart()) != nil)
    }
    // 无法代理
    if !self.canProxy! { return url }
    // 无法转 URL 对象
    guard let urlObj = URL(string: url) else { return url }
    
    guard let proxyUrlObj = KTVHTTPCache.proxyURL(withOriginalURL: urlObj) else {
      // 代理失败
      return url
    }
    // 代理成功
    return proxyUrlObj.absoluteString
  }
}

kotlin复制代码package com.lxf.video_cache

import LXFVideoCacheHostApi
import com.danikula.videocache.HttpProxyCacheServer

import io.flutter.embedding.engine.plugins.FlutterPlugin
import io.flutter.plugin.common.MethodCall
import io.flutter.plugin.common.MethodChannel.MethodCallHandler
import io.flutter.plugin.common.MethodChannel.Result

/** VideoCachePlugin */
class VideoCachePlugin : FlutterPlugin, MethodCallHandler {

    private lateinit var videoCacheHostApiImplementation: LXFVideoCacheHostApiImplementation

    override fun onAttachedToEngine(flutterPluginBinding: FlutterPlugin.FlutterPluginBinding) {
        videoCacheHostApiImplementation = LXFVideoCacheHostApiImplementation(flutterPluginBinding)
        // 初始化插件
        LXFVideoCacheHostApi.setUp(
                flutterPluginBinding.binaryMessenger,
                videoCacheHostApiImplementation,
        )
    }

    override fun onDetachedFromEngine(binding: FlutterPlugin.FlutterPluginBinding) {
        // 关闭服务
        videoCacheHostApiImplementation.shutdown()
    }

    override fun onMethodCall(call: MethodCall, result: Result) {}
}

class LXFVideoCacheHostApiImplementation(
        private val flutterPluginBinding: FlutterPlugin.FlutterPluginBinding
) : LXFVideoCacheHostApi {
    /// 懒加载缓存服务
    private val cacheServer by lazy { HttpProxyCacheServer.Builder(flutterPluginBinding.applicationContext).build() }

    /// 重写并通过 cacheServer 将原 url 转换为具备缓存功能的 url
    override fun convertToCacheProxyUrl(url: String): String {
        return cacheServer.getProxyUrl(url)
    }

    /// 关闭服务
    fun shutdown() {
        cacheServer.shutdown()
    }
}

yaml复制代码dependencies:
  video_cache: latest_version

dart复制代码// 导入
import 'package:video_cache/video_cache.dart';

// 将原视频链接转为缓存代理链接
String url = 'https://flutter.github.io/assets-for-api-docs/assets/videos/bee.mp4';
url = await VideoCache().convertToCacheProxyUrl(url);

// url转换结果
// http://localhost:50050/https%3A%2F%2Fflutter%2Egithub%2Eio%2Fassets%2Dfor%2Dapi%2Ddocs%2Fassets%2Fvideos%2Fbee%2Emp4/KTVHTTPCachePlaceHolder/KTVHTTPCacheLastPathComponent.mp4

bash复制代码type 'FlutterError' does not conform to protocol 'Error'

swift复制代码// https://github.com/flutter/flutter/issues/136081
extension FlutterError: Error {}

tsx复制代码import React from "react";
import ReactDOM from "react-dom";
import dayjs from "dayjs";
import LoadRemoteComponent from "./components/LoadRemoteComponent";

<LoadRemoteComponent
  urls={["https://cdnjs.cloudflare.com/ajax/libs/antd/5.16.2/antd.min.js"]}
  name="antd.Button"
  options={{
    props: {
      type: "primary",
      loading: true,
    },
    externals: {
      react: {
        import: React,
        export: "React",
      },
      "react-dom": {
        import: ReactDOM,
        export: "ReactDOM",
      },
      dayjs: {
        import: dayjs,
        export: "dayjs",
      },
    },
  }}
>
  按钮文字
</LoadRemoteComponent>;

vue复制代码<template>
  <LoadRemoteComponent
    :urls="urls"
    name="ElementPlus.ElButton"
    :options="options"
  >
    按钮文字
  </LoadRemoteComponent>
</template>

<script setup lang="ts">
import { ref, onMounted } from "vue";
import LoadRemoteComponent from "./components/LoadRemoteComponent/Index.vue";

const urls = ref([
  "https://cdnjs.cloudflare.com/ajax/libs/element-plus/2.7.0/index.full.min.js",
  "https://cdnjs.cloudflare.com/ajax/libs/element-plus/2.7.0/index.min.css",
]);

const options = ref({
  props: {
    type: "primary",
    loading: true,
  },
  externals: {
    vue: {
      import: "",
      export: "Vue",
    },
  },
});

onMounted(() => {
  import("vue").then((vue) => {
    options.value.externals["vue"].import = vue;
  });
});
</script>

js复制代码<script setup>
import { onMounted, onBeforeMount } from 'vue';

console.log('hello')

onMounted(() => {
  console.log('onMounted')
})

onBeforeMount(() => {
    console.log('onBeforeMount')
})
</script>

js复制代码<template>
  <div ref="el">
    <p>hello</p>
  </div>
</template>

<script setup>
import { onMounted, onBeforeMount, ref } from 'vue';

const el = ref(null);

console.log('hello')
console.log(el.value);

onMounted(() => {
  console.log('onMounted')
  console.log(el.value);
})

onBeforeMount(() => {
  console.log('onBeforeMount')
  console.log(el.value);
})
</script>


<style lang="scss" scoped></style>

js复制代码<template>
  <div>
    <p @click="change">{{ count }}</p>
  </div>
</template>

<script setup>
import { ref, onUpdated } from 'vue';
const count = ref(0);

onUpdated(() => {
  console.log('onUpdated');
});


const change = () => {
  count.value++;
}

</script>


<style lang="scss" scoped></style>

js复制代码import { createRouter, createWebHistory } from 'vue-router'

const routes = [
  {
    path: '/',
    name: 'home',
    component: () => import('../views/Home.vue'),
    meta: {
      title: '商城首页'
    }
  },
  {
    path: '/about',
    name: 'about',
    component: () => import('../views/About.vue'),
    meta: {
      title: '关于我们'
    }
  }
]

const router = createRouter({
  history: createWebHistory(),
  routes
})

// 全局的前置钩子
router.beforeEach((to, from, next) => {
  console.log(to, from);
  next()
})

js复制代码<template>
  <div>
    <router-link to="/">首页</router-link>
    <router-link to="/about">关于</router-link>
    <router-view />
  </div>
</template>

<script setup>

</script>

<style lang="scss" scoped>

</style>

js复制代码router.beforeEach((to, from, next) => {
  // console.log(to, from);
  document.title = to.meta.title
  if (to.path !== '/') {
    const isLogin = localStorage.getItem('isLogin')
    if (isLogin) {
      next()
    } else {
      // router.push('/')
      alert('请先登录')
      return
    }
  }
  next()
})

js复制代码router.afterEach((to, from) => {
  console.log(to, from)
})

js复制代码import { createRouter, createWebHistory } from 'vue-router'

const routes = [
  {
    path: '/',
    name: 'home',
    component: () => import('../views/Home.vue'),
    meta: {
      title: '商城首页'
    }
  },
  {
    path: '/about',
    name: 'about',
    component: () => import('../views/About.vue'),
    meta: {
      title: '关于我们'
    },
    beforeEnter: (to, from, next) => {  // 单独的路由守卫
      console.log(to, from);
      next()
    }
  }
]

const router = createRouter({
  history: createWebHistory(),
  routes
})

js复制代码<template>
    <div>
        About
    </div>
</template>

<script setup>
import { onBeforeRouteLeave } from 'vue-router';

onBeforeRouteLeave((to, from, next) => {
    console.log(to, from);
    const flag = window.confirm('你确定要离开这个页面吗?')
    if (flag) {
       next()
    }
});
</script>

<style lang="scss" scoped>

</style>

js复制代码<template>
  <div>
    <nav>
      <router-link to="/">首页 </router-link>
      <router-link to="/about">关于</router-link>
    </nav>

    <router-view v-slot="{ Component }">
      <KeepAlive :include="['Home']">
        <component :is="Component" />
      </KeepAlive>
    </router-view>
  </div>
</template>

<script setup>

</script>

<style lang="scss" scoped></style>

js复制代码<template>
    <div>
        <p>home page</p>
    </div>
</template>

<script setup>
import { onActivated, onDeactivated, onMounted } from 'vue';

onMounted(() => {
    console.log('首页页面的onMounted');
})

onActivated(() => {  // 当被缓存的组件生效时触发
    console.log('首页页面的onActivated');
})

onDeactivated(() => {  // 当被缓存的组件离开时触发
    console.log('首页页面的onDeactivated');
})

</script>#

<style lang="scss" scoped>

</style>

kotlin复制代码class MainActivity : AppCompatActivity(){
private lateinit var webView: WebView
private lateinit var mainBinding: ActivityMainBinding
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
mainBinding = ActivityMainBinding.inflate(layoutInflater)
webView = WebView(this)
val params = FrameLayout.LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.MATCH_PARENT
)
mainBinding.contentView.addView(webView, params)
val webSettings: WebSettings = webView.settings
webSettings.setJavaScriptEnabled(true)
webView.loadUrl("file:///android_asset/android_test/index.html")
webView.addJavascriptInterface(JsInterface(), "control")
}
//android调用前端部分
fun showToast(value:String){
webView.evaluateJavascript("javascript:showToast('$value');", ValueCallback {
Log.e("toast", it)
})
}
inner class JsInterface {
//前端调用android部分
@JavascriptInterface
fun showToast(str: String) {   
 Toast.makeText(this@MainActivity, str, Toast.LENGTH_LONG).show()
}
}
}

xml复制代码<script>    
/**     
* android原生调用前端部分     
* @param value     
*/    
function showToast(value){        alert("显示内容："+value);        
}
</script>

xml复制代码<body>
<div >   
 <van-button type="primary" @click="showToastAndroid('今天天气不错')" size="large">{{text||"消息提示"}}</van-button></div>
</body>

javascript复制代码var app=new Vue({   
 el: '#app',    
methods: {        
data() {            
return {                
text:null,            
}        
},               
/**         
* 消息提示         
*/        
showToastAndroid(value){            
javascript:control.showToast(value);        
},    
}});

dart复制代码var url="file:///android_asset/android_test/index.html"
var thisUrl="file:///android_asset/android_test/index.html?data1='萨摩耶'&data2='哈士奇'"
if(this.thisUrl.contains("?")){    
this.thisData ="&data1=${this.data1}&data2=$data2"
}else{    
this.thisData ="?data1=${this.tata1}&data2=$data2"
}
url="${this.thisUrl}${this.thisData}"
webView.loadUrl(url)

less复制代码webView.addJavascriptInterface(JsInterface(), "control")

css复制代码javascript:control.showToast(value);

less复制代码@JavascriptInterface
fun showToast(str: String) {   
 Toast.makeText(this@MainActivity, str, Toast.LENGTH_LONG).show()
}

css复制代码javascript:control.showToast(value);

php复制代码compileOnly 'androidx.recyclerview:recyclerview:1.0.0'
compileOnly 'androidx.legacy:legacy-support-v4:1.0.0'
compileOnly 'androidx.appcompat:appcompat:1.0.0'
compileOnly 'com.alibaba:fastjson:1.2.83'
compileOnly fileTree(include: ['uniapp-v8-release.aar'], dir: '../app/libs')

scala复制代码package com.test.testplugin;
import com.alibaba.fastjson.JSONObject;
import io.dcloud.feature.uniapp.annotation.UniJSMethod;
import io.dcloud.feature.uniapp.bridge.UniJSCallback;
import io.dcloud.feature.uniapp.common.UniModule;
public class TestModule extends UniModule {
    @UniJSMethod(uiThread = false)
    public void open(UniJSCallback callback) {
        JSONObject data = new JSONObject();
        data.put("hello world:","插件调用成功");
        callback.invoke(data);
    }
}

json复制代码{
  "nativePlugins":[
    {
      "hooksClass":"",
      "plugins":[
        {
          "type":"module",
          "name":"Test-Plugin",
          "class":"com.test.testplugin.TestModule"
        }
      ]
    }
  ]
}

swift复制代码import SwiftUI

struct ContentView: View {
    @State private var birthDay = Date()
    
    var body: some View {
        DatePicker(selection: $birthDay, displayedComponents: [.hourAndMinute，.date]) {
            Text("出生日期")
        }
        .environment(\.locale, Locale(identifier: "zh_Hans_CN"))
        .padding()
    }
}

swift复制代码import SwiftUI

struct ContentView: View {
    @State private var selectedDate = Date()
    var formatter: DateFormatter {
        let dateFormatter = DateFormatter()
        dateFormatter.dateFormat = "yyyy-MM-dd hh:mm:ss"
        return dateFormatter
    }

    var body: some View {
        VStack {
            DatePicker(
                selection: $selectedDate,
                displayedComponents: [.hourAndMinute, .date],
                label: { Text("选择日期") }
            )
            .padding()

            Text(formatter.string(from: selectedDate))
        }
    }
}

vbnet复制代码import SwiftUI

struct ContentView: View {
    let date = Date()

    var formatter: DateFormatter {
        let dateFormatter = DateFormatter()
        dateFormatter.dateFormat = "yyyy-MM-dd hh:mm:ss"
        return dateFormatter
    }

    var body: some View {
        VStack {
            Text("\(date)")

            Text(formatter.string(from: date))
        }
    }
}

swift复制代码import SwiftUI

struct ContentView: View {
    var date = Date()

    var body: some View {
        VStack {
            Text(date, style: .date)

            Text(date, style: .time)

            Text(date, style: .relative)

            Text(date, style: .offset)

            Text(date.addingTimeInterval(600), style: .timer)

            Text(date.getCurrentTime(), style: .timer)
        }
    }
}

extension Date {
    func getCurrentTime() -> Date {
        let calendar: Calendar = Calendar.current
        let year = calendar.component(.year, from: self)
        let month = calendar.component(.month, from: self)
        let day = calendar.component(.day, from: self)
        let components = DateComponents(year: year, month: month, day: day, hour: 0, minute: 0, second: 0)
        return Calendar.current.date(from: components)!
    }
}

swift复制代码import SwiftUI

struct ContentView: View {
    var date = Date.now

    var body: some View {
        VStack {
            Text(date.formatted(.dateTime.locale(Locale(identifier: "zh_Hans_CN"))))

            Text(date.formatted(.dateTime.day().locale(Locale(identifier: "zh_Hans_CN"))))

            Text(date.formatted(.dateTime.week().locale(Locale(identifier: "zh_Hans_CN"))))

            Text(date.formatted(.dateTime.weekday().locale(Locale(identifier: "zh_Hans_CN"))))

            Text(date.formatted(.dateTime.weekday(.wide).locale(Locale(identifier: "zh_Hans_CN"))))

            Text(date.formatted(.dateTime.month().locale(Locale(identifier: "zh_Hans_CN"))))

            Text(date.formatted(.dateTime.month(.wide).locale(Locale(identifier: "zh_Hans_CN"))))

            Text(date.formatted(.dateTime.year().locale(Locale(identifier: "zh_Hans_CN"))))

            Text(date.formatted(.dateTime.day().weekday().locale(Locale(identifier: "zh_Hans_CN"))))

            Text(date.formatted(.dateTime.day().weekday().month().locale(Locale(identifier: "zh_Hans_CN"))))

            Text(date.formatted(.dateTime.day().month().year().locale(Locale(identifier: "zh_Hans_CN"))))
        }
    }
}

javascript复制代码function a() {
    function b() {
        var b = 55
        console.log(a);
    }
    var a = 200
    b()
}
var glob = 50
a()

javascript复制代码function a() {}
var glob = 50
a()

javascript复制代码Activation Object={
	a:undefined, (形参)
    a:undefined (实参)
}//是错误的

因为对象里不能存在相同的键，所以如果会进行重叠覆盖

Activation Object={
	a:undefined 
}

javascript复制代码Activation Object={
	a:undefined
}

javascript复制代码Activation Object={
	a:undefined, 
    b:function
}

javascript复制代码function a() {
    function b() {
        var b = 55
        console.log(a);
    }
    var a = 200
    b()
}

css复制代码Activation Object={
	a:200, 
    b:function
}

javascript复制代码Activation Object={
	b:undefined
}

javascript复制代码Activation Object={
	b:55
}

javascript复制代码function a() {
    function b() {
        var b = 55
        console.log(a);
    }
    var a = 200
    b()
}
var glob = 50
a()

javascript复制代码function test(a, b) {
    console.log(a);       
    c = 0
    var c;
    a = 3
    b = 2
    console.log(b);       
    function b() { }
    console.log(b);       
}
test(1)