JavaScript中保留字的列表 [英] List of reserved words in JavaScript

问题描述

是否有比 Mozilla的更完整的列表? >

它缺少诸如 parseFloat ， toString ， prototype 之类的词.

解决方案

parseFloat，toString和prototype是非保留字.仅仅因为它们有时具有特殊含义，并不意味着您不能使用其名称声明变量；

var prototype = "foo"; // no error.

ES5标准也包含保留字列表，但应匹配MDN给出的列表:

break, do, instanceof, typeof, case, else, new, var, catch, finally, return, 
void, continue, for, switch, while, debugger, function, this, with, default,
if, throw, delete, in, try

class, enum, extends, super, const, export, import

您可能还对 ES5的严格变体添加了额外的单词感兴趣. 保留的列表；

在严格模式代码中，标识符"implements", "interface", "let", "package", "private", "protected", "public", "static", and "yield"被分类为FutureReservedWord令牌. (第7.6.1.2节).

Is there any more complete list than Mozilla's about reserved words?

It lacks words like parseFloat, toString, prototype, etc.

解决方案

parseFloat, toString and prototype are not reserved words. Just because they sometimes have a special meaning, doesn't mean you can't declare variables with their names;

var prototype = "foo"; // no error.

The ES5 standard contains a list of reserved words as well, but it should match the list given by MDN:

break, do, instanceof, typeof, case, else, new, var, catch, finally, return, 
void, continue, for, switch, while, debugger, function, this, with, default,
if, throw, delete, in, try

class, enum, extends, super, const, export, import

It might also be of interest to you that the strict varient of ES5 adds additional words to the reserved list;

The identifiers "implements", "interface", "let", "package", "private", "protected", "public", "static", and "yield" are classified as FutureReservedWord tokens within strict mode code. (section 7.6.1.2).

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