这个符号在 JavaScript 中是什么意思? [英] What does this symbol mean in JavaScript?

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问题描述

这是不时出现的关于 JavaScript 语法的问题集合.这也是一个社区 Wiki,因此邀请所有人参与维护此列表.

This is a collection of questions that come up every now and then about syntax in JavaScript. This is also a Community Wiki, so everyone is invited to participate in maintaining this list.

Stack Overflow 不允许搜索特定字符.因此,在搜索时不容易找到有关运算符和其他语法标记的许多问题.这也使得关闭重复项更加困难.下面的列表有助于解决这个问题.

Stack Overflow does not allow searching for particular characters. As a consequence, many questions about operators and other syntax tokens are not found easily when searching for them. This also makes closing duplicates more difficult. The list below is to help with this issue.

主要思想是在 Stack Overflow 上提供指向现有问题的链接,这样我们就可以更轻松地引用它们,而不是复制 ECMAScript 规范中的内容.

The main idea is to have links to existing questions on Stack Overflow, so it's easier for us to reference them, not to copy over content from the ECMAScript Spec.

此外,这是PHP 符号参考.我们需要一个 JS 的.

Additionally, this is a blatant copy of the PHP symbol reference. We needed a JS one.

请帮忙.编辑并添加指向其他运算符/语法参考的链接,或者如果您找不到有关特定语法的好问题/答案,请添加此问题的答案并将其链接

推荐答案

查看 MDN 上关于 表达式和运算符声明.

See the documentation on MDN about expressions and operators and statements.

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