Вопрос 25

Which description best matches a JavaScript string primitive?

An immutable sequence of UTF-16 code unitsПравильный ответ
A mutable array of visible characters
A sequence with one byte per character
An object whose elements can be reassigned

Объяснение

A JavaScript string is an immutable sequence of UTF-16 code units. Saying it is a sequence of visible characters is too strong because some displayed characters require multiple code units or multiple code points.

Объяснение

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