What are the reserved words in ES6?

Reserved words of ES6: 1. enum (always reserved); 2. Reserved words in strict mode are implements, package, public, interface, protected, static, let, private; 3. in module code The reserved word is await.

The operating environment of this article: Windows 10 system, Vue version 2.9.6, DELL G3 computer.

What are the reserved words of ES6

ES6 reserved words

1. Always reserved:

enum

2. Reserved in strict mode:

implements, package, public, interface, protected, static, let, private

3. Reserved in the module code:

await

Extended knowledge:

ES6 keywords

JavaScript puts some The identifier is taken out and used as its own keyword. Therefore, these keywords can no longer be used as identifiers in programs

JavaScript also reserves some keywords that are not used in the current language version, but may be used in future versions Will be used. ES5 retains these keywords, which we call reserved words:

class const enum export extendes inport super

It is worth noting that some of these reserved words have been used in ES6.

In addition, there are some keywords that are legal in ordinary JS code, but are reserved words in strict mode:

implements let private public yield interface package protected static

Strict mode also makes changes to the use of the following identifiers Due to strict restrictions, they are not entirely reserved words, but they cannot be used as variable names, function names or parameter names:

arguments eval

In addition, there are many global variables and functions built into JS , you should avoid using their names as variable names and function names. This is easy to understand. For example, we are familiar with the alert method. If you define a function whose name is alert, how does the original alert work? :

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