The flags accessor property of RegExp instances returns the flags of this regular expression.

The Symbol.replace static data property represents the well-known symbol @@replace. The String.prototype.replace() and String.prototype.replaceAll() methods look up this symbol on their first argument for the method that replaces substrings matched by the current object.

The blink() method of String values creates a string that embeds this string in a <blink> element (<blink>str</blink>), which used to cause a string to blink in old browsers.

The big() method of String values creates a string that embeds this string in a <big> element (<big>str</big>), which causes this string to be displayed in a big font.

The anchor() method of String values creates a string that embeds this string in an <a> element with a name (<a name="...">str</a>).

The fontsize() method of String values creates a string that embeds this string in a <font> element (<font size="...">str</font>), which causes this string to be displayed in the specified font size.

The toString() method of String values returns this string value.

The valueOf() method of String values returns this string value.

The toDateString() method of Date instances returns a string representing the date portion of this date interpreted in the local timezone.

The Atomics.add() static method adds a given value at a given position in the array and returns the old value at that position. This atomic operation guarantees that no other write happens until the modified value is written back.