blocks|key|281358|text|匿名函数只是一个没有名称的函数，仅此而已。闭包是一个捕获周围环境状态的函数。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|281359|匿名函数不一定需要创建闭包，而且闭包也不是只为匿名函数创建的。|281360|考虑一下这个假设的反例。考虑一种语言Foo，它不支持闭包，但支持匿名函数。此语言可能无法编译以下代码或抛出错误，因为"greeting“未在内部函数的作用域中定义。它是匿名的这一事实无关紧要。|281361|function+outer()+{
++++var+greeting+=+"hello+";

++++(function(name)+{
++++++++alert(greeting+%2B+name);
++++})("John+Doe");
}|code-block|syntax|javascript|281362|现在让我们考虑一种支持闭包的实际语言--+JavaScript。使用与上面相同的示例，但这次命名内部函数将提供：|281363|function+outer()+{
++++var+greeting+=+"hello+";

++++(function+inner(name)+{
++++++++alert(greeting+%2B+name);
++++})("John+Doe");
}|281364|虽然内部函数不再是匿名的，但它仍然捕获来自周围环境的状态。|281365|闭包提供了非常必要的便利，否则我们将把函数的每个依赖项作为参数传递。|281366|function+outer()+{
++++var+greeting+=+"hello+";

++++(function(name,+greeting)+{
++++++++alert(greeting+%2B+name);
++++})("John+Doe",+greeting);
}|281367|entityMap^0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|Y|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|Z|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|10|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|11|8|@]|9|@]|A|$I|J]]|$1|O|3|P|5|6|7|12|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|13|8|@]|9|@]|A|$]]|$1|S|3|T|5|H|7|14|8|@]|9|@]|A|$I|J]]|$1|U|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|V|$]]

An anonymous function is just a function that has no name; nothing more. A closure is a function that captures the state of the surrounding environment.

An anonymous function does not necessarily need to create a closure, and a closure is not created only for anonymous functions.

Consider this hypothetical counter-example. Consider a language Foo which does not support closures but supports anonymous functions. This language may either not compile or throw an error for the code below because "greeting" is not defined in the scope of the inner function. The fact that it is anonymous is irrelevant.

<pre><code>function outer() {
 var greeting = "hello ";

 (function(name) {
 alert(greeting + name);
 })("John Doe");
}
</code></pre>

Let's consider an actual language now that does support closures - JavaScript. Taking the same example as above, but naming the inner function this time gives:

<pre><code>function outer() {
 var greeting = "hello ";

 (function inner(name) {
 alert(greeting + name);
 })("John Doe");
}
</code></pre>

Although the inner function is not anonymous anymore, it still captures state from the surrounding environment.

Closures provide much needed convenience, as otherwise we would be passing every single dependency of the function as an argument.

<pre><code>function outer() {
 var greeting = "hello ";

 (function(name, greeting) {
 alert(greeting + name);
 })("John Doe", greeting);
}
</code></pre>

<blockquote>
 Possible Duplicates: 
 <a href="https://stackoverflow.com/questions/4501411/what-is-closures-lambda-in-php-or-javascript-in-layman-terms">What is Closures/Lambda in PHP or Javascript in layman terms?</a> 
 <a href="https://stackoverflow.com/questions/220658/what-is-the-difference-between-a-closure-and-a-lambda">What is the difference between a &#39;closure&#39; and a &#39;lambda&#39;?</a> 
</blockquote>



Hi,

I have been unable to find a definition that clearly explains the differences between a closure and an anonymous function.

Most references I have seen clearly specify that they are distinct "things" yet I can't seem to get my head around why.

Could someone please simplify it for me? What are the specific differences between these two language features? Which one is more appropriate in what scenarios?

Closure vs Anonymous function (difference?)

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

 可能的重复项：嗨,我一直找不到一个清晰的定义来解释闭包和匿名函数之间的区别。我看过的大多数参考文献都清楚地指出它们是不同的“东西”，但我似乎不明白为什么。有人能帮我简化一下吗？这两种语言功能之间的具体区别是什么？在什么情况下，哪一个更合适？

闭包与匿名函数(区别？)-腾讯云开发者社区-腾讯云

问闭包与匿名函数(区别？)
EN

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问闭包与匿名函数(区别？)EN

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问闭包与匿名函数(区别？)
EN