js对象属性名书写方式

最新推荐文章于 2024-08-01 16:10:08 发布

xiongzhengxiang

最新推荐文章于 2024-08-01 16:10:08 发布

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分类专栏： JS 文章标签： javascript properties delete object string

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本文深入解析JavaScript中使用'delete'关键字引发的语法错误问题，解释了原因并提供了解决方案，适用于理解JavaScript语言特性和避免常见编程错误。

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Notation of Keys

var test = {
    'case': 'I am a keyword so I must be notated as a string',
    delete: 'I am a keyword too so me' // raises SyntaxError
};

Object properties can be both notated as plain characters and as strings. Due to another mis-design in JavaScript's parser, the above will throw aSyntaxError prior to ECMAScript 5.

This error arises from the fact that delete is a keyword; therefore, it must be notated as a string literal to ensure that it will be correctly interpreted by older JavaScript engines.