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The
ReferenceError.prototype
property represents the prototype for the
ReferenceError
constructor.
The
RegExp.prototype
property represents the prototype object for the
RegExp
constructor.
The add()
method appends a new element with a specified value
to the end of a Set
object.
The clear()
method removes all elements from a Set
object.
The delete()
method removes the specified element from a Set
object.
The forEach()
method executes a provided function once per each value in the Set
object, in insertion order.
The has()
method returns a boolean indicating whether an element with the specified value exists in a Set
object or not.
The
size
accessor property returns the number of elements in a
Set
object.
The charAt()
method returns the specified character from a string.
The concat()
method combines the text of one or more strings and returns a new string.
The endsWith()
method determines whether a string ends with the characters of another string, returning true
or false
as appropriate.
The includes()
method determines whether one string may be found within another string, returning true
or false
as appropriate.
The
indexOf()
method returns the index within the calling
String
object of the first occurrence of the specified value, starting the search at
fromIndex
. Returns -1 if the value is not found.
The
lastIndexOf()
method returns the index within the calling
String
object of the last occurrence of the specified value, searching backwards from
fromIndex
. Returns -1 if the value is not found.
The length
property represents the length of a string.
The
String.prototype
property represents the
String
prototype object.
The slice()
method extracts a section of a string and returns a new string.
The deprecated substr()
method returns the characters in a string beginning at the specified location through the specified number of characters.
The substring()
method returns a subset of a string
between one index and another, or through the end of the string.
The toLowerCase()
method returns the calling string value converted to lower case.