The Temporal.Now.zonedDateTimeISO() static method returns the current date and time as a Temporal.ZonedDateTime object, in the ISO 8601 calendar and the specified time zone.

Low-level languages like C, have manual memory management primitives such as malloc() and free(). In contrast, JavaScript automatically allocates memory when objects are created and frees it when they are not used anymore (garbage collection). This automaticity is a potential source of confusion: it can give developers the false impression that they don't need to worry about memory management.

Boolean values can be one of two values: true or false, representing the truth value of a logical proposition.

This chapter documents all of JavaScript's standard, built-in objects, including their methods and properties.

The let declaration declares re-assignable, block-scoped local variables, optionally initializing each to a value.

The parseInt() function parses a string argument and returns an integer of the specified radix (the base in mathematical numeral systems).

The startOffset attribute defines an offset from the start of the path for the initial current text position along the path after converting the path to the <textPath> element's coordinate system.

The JavaScript exception "form must be one of 'NFC', 'NFD', 'NFKC', or 'NFKD'" occurs when an unrecognized string is passed to the String.prototype.normalize() method.

The JavaScript exception "malformed URI sequence" occurs when URI encoding or decoding wasn't successful.

The JavaScript exception "octal escape sequences can't be used in untagged template literals or in strict mode code" occurs when octal escape sequences are used in strict mode string literals or untagged template literals.