- October 9, 2026The Object.getOwnPropertyDescriptor() static method returns an object describing the configuration of a specific property on a given object (that is,…
- October 9, 2026The Object.entries() static method returns an array of a given object's own enumerable string-keyed property key-value pairs.
- October 9, 2026The Object.freeze() static method freezes an object.
- October 9, 2026The Object.defineProperty() static method defines a new property directly on an object, or modifies an existing property on an object,…
- October 9, 2026The Object.create() static method creates a new object, using an existing object as the prototype of the newly created object.
- October 9, 2026The Object.defineProperties() static method defines new or modifies existing properties directly on an object, returning the object.
- October 9, 2026The Object.assign() static method copies all enumerable own properties from one or more source objects to a target object.
- October 9, 2026The Object() constructor turns the input into an object.
- October 9, 2026The valueOf() method of Number values returns the value of this number.
- October 9, 2026The toString() method of Number values returns a string representing this number value.
- October 9, 2026The toLocaleString() method of Number values returns a string with a language-sensitive representation of this number.
- October 9, 2026The toPrecision() method of Number values returns a string representing this number to the specified number of significant digits.
- October 9, 2026The Number.POSITIVE_INFINITY static data property represents the positive Infinity value.
- October 9, 2026The toExponential() method of Number values returns a string representing this number in exponential notation.
- October 9, 2026The toFixed() method of Number values returns a string representing this number using fixed-point notation with the specified number of…
- October 9, 2026The Number.parseFloat() static method parses an argument and returns a floating point number.
- October 9, 2026The Number.parseInt() static method parses a string argument and returns an integer of the specified radix or base.
- October 9, 2026The Number.NaN static data property represents Not-A-Number, which is equivalent to NaN.
- October 9, 2026The Number.NEGATIVE_INFINITY static data property represents the negative Infinity value.
- October 9, 2026The Number.MIN_VALUE static data property represents the smallest positive numeric value representable in JavaScript.
- October 9, 2026The Number.MAX_VALUE static data property represents the maximum numeric value representable in JavaScript.
- October 9, 2026The Number.MIN_SAFE_INTEGER static data property represents the minimum safe integer in JavaScript, or -(253 - 1).
- October 9, 2026The Number.isSafeInteger() static method determines whether the provided value is a number that is a safe integer.
- October 9, 2026The Number.MAX_SAFE_INTEGER static data property represents the maximum safe integer in JavaScript (253 – 1).
- October 9, 2026The Number.isInteger() static method determines whether the passed value is an integer.
- October 9, 2026The Number.isNaN() static method determines whether the passed value is the number value NaN, and returns false if the input…
- October 9, 2026The Number.EPSILON static data property represents the difference between 1 and the smallest floating point number greater than 1.
- October 9, 2026The Number.isFinite() static method determines whether the passed value is a finite number — that is, it checks that a…
- October 9, 2026Number values represent floating-point numbers like 37 or -9.25.
- October 9, 2026The Number() constructor creates Number objects.
- October 9, 2026The Math.LOG10E static data property represents the base 10 logarithm of e, approximately 0.434.
- October 9, 2026The Math.LN2 static data property represents the natural logarithm of 2, approximately 0.693:
- October 9, 2026The Math.log10() static method returns the base 10 logarithm of a number.
- October 9, 2026The Math.LN10 static data property represents the natural logarithm of 10, approximately 2.303.
- October 9, 2026The Math.imul() static method returns the result of the C-like 32-bit multiplication of the two parameters.
- October 9, 2026The Math.fround() static method returns the nearest 32-bit single precision float representation of a number.
- October 9, 2026The Math.hypot() static method returns the square root of the sum of squares of its arguments.
- October 9, 2026The Math.expm1() static method returns e raised to the power of a number, subtracted by 1.
- October 9, 2026The Math.f16round() static method returns the nearest 16-bit half precision float representation of a number.
- October 9, 2026The Math.floor() static method always rounds down and returns the largest integer less than or equal to a given number.
- October 9, 2026The Math.exp() static method returns e raised to the power of a number.
- October 9, 2026The Math.E static data property represents Euler's number, the base of natural logarithms, e, which is approximately 2.718.
- October 9, 2026The Math.cos() static method returns the cosine of a number in radians.
- October 9, 2026The Math.cosh() static method returns the hyperbolic cosine of a number.
- October 9, 2026The Math.ceil() static method always rounds up and returns the smallest integer greater than or equal to a given number.
- October 9, 2026The Math.clz32() static method returns the number of leading zero bits in the 32-bit binary representation of a number.
- October 9, 2026The Math.atanh() static method returns the inverse hyperbolic tangent of a number.
- October 9, 2026The Math.cbrt() static method returns the cube root of a number.
- October 9, 2026The Math.atan2() static method returns the angle in the plane (in radians) between the positive x-axis and the ray from…
- October 9, 2026The Math.atan() static method returns the inverse tangent (in radians) of a number, that is
- October 9, 2026The Math.acosh() static method returns the inverse hyperbolic cosine of a number.
- October 9, 2026The Math.asin() static method returns the inverse sine (in radians) of a number.
- October 9, 2026The Math.asinh() static method returns the inverse hyperbolic sine of a number.
- October 9, 2026The Math.abs() static method returns the absolute value of a number.
- October 9, 2026The Math.acos() static method returns the inverse cosine (in radians) of a number.
- October 9, 2026The Math namespace object contains static properties and methods for mathematical constants and functions.
- October 9, 2026The Map[Symbol.species] static accessor property is an unused accessor property specifying how to copy Map objects.
- October 9, 2026The Symbol.iterator method of Map instances implements the iterable protocol and allows Map objects to be consumed by most syntaxes…
- October 9, 2026The getOrInsertComputed() method of Map instances returns the value corresponding to the specified key in this Map.
- October 9, 2026The has() method of Map instances returns a boolean indicating whether an entry with the specified key exists in this…
- October 9, 2026The set() method of Map instances adds a new entry with a specified key and value to this Map, or…
- October 9, 2026The getOrInsert() method of Map instances returns the value corresponding to the specified key in this Map.
- October 9, 2026The delete() method of Map instances removes the entry specified by the key from this Map.
- October 9, 2026The forEach() method of Map instances executes a provided function once per each key/value pair in this map, in insertion…
- October 9, 2026The get() method of Map instances returns the value corresponding to the key in this Map, or undefined if there…
- October 9, 2026Note: In some versions of some browsers, this method was implemented as the method Array.prototype.groupToMap().
- October 9, 2026The Map object holds key-value pairs and remembers the original insertion order of the keys.
- October 9, 2026Parameters: iterable If an iterable object (such as an array) is passed, all of its elements will be added to…
- October 9, 2026The JSON.rawJSON() static method creates a "raw JSON" object containing a piece of JSON text.
- October 9, 2026The JSON.stringify() static method converts a JavaScript value to a JSON string, optionally replacing values if a replacer function is…
- October 9, 2026The JSON.parse() static method parses a JSON string, constructing the JavaScript value or object described by the string.
- October 9, 2026The JSON.isRawJSON() static method tests whether a value is an object returned by JSON.rawJSON().
- October 9, 2026The isNaN() function determines whether a value is NaN, first converting the value to a number if necessary.
- October 9, 2026The isFinite() function determines whether a value is finite, first converting the value to a number if necessary.
- October 9, 2026The Intl.NumberFormat.supportedLocalesOf() static method returns an array containing those of the provided locales that are supported in number formatting without…
- October 9, 2026The Intl.supportedValuesOf() static method returns an array containing the supported calendar, collation, currency, numbering systems, or unit values supported by…
- October 9, 2026The resolvedOptions() method of Intl.NumberFormat instances returns a new object with properties reflecting the options computed during initialization of this…
- October 9, 2026The formatRange() method of Intl.NumberFormat instances formats a range of numbers according to the locale and formatting options of this…
- October 9, 2026The formatRangeToParts() method of Intl.NumberFormat instances returns an Array of objects containing the locale-specific tokens from which it is possible…
- October 9, 2026The formatToParts() method of Intl.NumberFormat instances returns an array of objects representing each part of the formatted string that would…
- October 9, 2026The format() method of Intl.NumberFormat instances formats a number according to the locale and formatting options of this Intl.NumberFormat object.
- October 9, 2026The Intl.NumberFormat() constructor creates Intl.NumberFormat objects.
- October 9, 2026The Intl.NumberFormat object enables language-sensitive number formatting.
- October 9, 2026The Intl.DateTimeFormat.supportedLocalesOf() static method returns an array containing those of the provided locales that are supported in date and time…
- October 9, 2026The Intl.getCanonicalLocales() static method returns an array containing the canonical locale names.
- October 9, 2026The formatToParts() method of Intl.DateTimeFormat instances returns an array of objects representing each part of the formatted string that would…
- October 9, 2026The resolvedOptions() method of Intl.DateTimeFormat instances returns a new object with properties reflecting the options computed during initialization of this…
- October 9, 2026The formatRangeToParts() method of Intl.DateTimeFormat instances returns an array of objects representing each part of the formatted string that would…
- October 9, 2026The format() method of Intl.DateTimeFormat instances formats a date according to the locale and formatting options of this Intl.DateTimeFormat object.
- October 9, 2026The formatRange() method of Intl.DateTimeFormat instances formats a date range in the most concise way based on the locales and…
- October 9, 2026The Intl.DateTimeFormat object enables language-sensitive date and time formatting.
- October 9, 2026The Intl.DateTimeFormat() constructor creates Intl.DateTimeFormat objects.
- October 9, 2026The Intl.Collator.supportedLocalesOf() static method returns an array containing those of the provided locales that are supported in collation without having…
- October 9, 2026The compare() method of Intl.Collator instances compares two strings according to the sort order of this collator object.
- October 9, 2026The resolvedOptions() method of Intl.Collator instances returns a new object with properties reflecting the options computed during initialization of this…
- October 9, 2026The Intl namespace object contains several constructors as well as functionality common to the internationalization constructors and other language sensitive…
- October 9, 2026The Intl.Collator object enables language-sensitive string comparison.
- October 9, 2026The Intl.Collator() constructor creates Intl.Collator objects.
- October 9, 2026The Infinity global property is a numeric value representing infinity.
- October 9, 2026The handler.setPrototypeOf() method is a trap for the [[SetPrototypeOf]] object internal method, which is used by operations such as Object.setPrototypeOf().
