In JavaScript, however, a method is a function that belongs to an object. A JavaScript method is a property containing a function definition.
There is a long list of Built-in or pre-defined methods in JavaScript
Maths Methods in JavaScript
- min() ->Returns the smallest of zero or more numbers.
- pow() ->Returns base to the exponent power, that is, base exponent.
- abs() ->Returns the absolute value of a number.
- acos() ->Returns the arccosine (in radians) of a number.
- asin() ->Returns the arcsine (in radians) of a number.
- sin() ->Returns the sine of a number.
- sqrt() ->Returns the square root of a number.
- tan() ->Returns the tangent of a number.
- atan() ->Returns the arctangent (in radians) of a number.
- atan2() ->Returns the arctangent of the quotient of its arguments.
- exp() ->Returns EN, where N is the argument, and E is Euler’s constant, the base of the natural logarithm.
- floor() ->Returns the largest integer less than or equal to a number.
- log() ->Returns the natural logarithm (base E) of a number.
- max() ->Returns the largest of zero or more numbers.
- ceil() ->Returns the smallest integer greater than or equal to a number.
- cos() ->Returns the cosine of a number.
- random() ->Returns a pseudo-random number between 0 and 1.
- round() ->Returns the value of a number rounded to the nearest integer.
- toSource() ->Returns the string “Math”.
Boolean Methods in JavaScript
- toString() ->Returns a string of either “true” or “false” depending upon the value of the object.
- toSource() ->Returns a string containing the source of the Boolean object; you can use this string to create an equivalent object.
- valueOf() ->Returns the primitive value of the Boolean object.
String Methods in JavaScript
- length() ->Returns the length of the string.
- search() ->Executes the search for a match between a regular expression and a specified string.
- split() ->Splits a String object into an array of strings by separating the string into substrings.
- lastIndexOf() ->Returns the index within the calling String object of the last occurrence of the specified value, or -1 if not found.
- charAt() ->Returns the character at the specified index.
- match() ->Used to match a regular expression against a string.
- charCodeAt() ->Returns a number indicating the Unicode value of the character at the given index.
- concat()-Combines the text of two strings and returns a new string.
- replace() ->Used to find a match between a regular expression and a string and to replace the matched substring with a new substring.
- substr() ->Returns the characters in a string beginning at the specified location through the specified number of characters.
- toLowerCase() ->Returns the calling string value converted to lower case.
- toString() ->Returns a string representing the specified object.
- toUpperCase() ->Returns the calling string value converted to uppercase.
- valueOf() ->Returns the primitive value of the specified object.
- toLocaleLowerCase() ->The characters within a string are converted to lower case while respecting the current locale.
- toLocaleUpperCase() ->The characters within a string are converted to the upper case while respecting the current locale.
- substring() ->Returns the characters in a string between two indexes into the string.
Array Methods in JavaScript
- every() ->Returns true if every element in this array satisfies the provided testing function.
- reduce() ->Apply a function simultaneously against two values of the array (from left-to-right) as to reduce it to a single value.
- filter() ->Creates a new array with all of the elements of this array for which the provided filtering function returns true.
- forEach() ->Calls a function for each element in the array.
- indexOf() ->Returns the first (least) index of an element within the array equal to the specified value, or -1 if none is found.
- join() ->Joins all elements of an array into a string.
- slice() ->Extracts a section of an array and returns a new array.
- some() ->Returns true if at least one element in this array satisfies the provided testing function.
- toSource() ->Represents the source code of an object
- lastIndexOf() ->Returns the last (greatest) index of an element within the array equal to the specified value, or -1 if none is found.
- map() ->Creates a new array with the results of calling a provided function on every element in this array.
- reduceRight() ->Apply a function simultaneously against two values of the array (from right-to-left) as to reduce it to a single value.
- reverse() ->Reverses the order of the elements of an array — the first becomes the last, and the last becomes the first.
- shift() ->Removes the first element from an array and returns that element.
- sort() ->Sorts the elements of an array.
- splice() ->Adds and/or removes elements from an array.
- toString() ->Returns a string representing the array and its elements.
- pop() ->Removes the last element from an array and returns that element.
- push()->Adds one or more elements to the end of an array and returns the new length of the array.
Date Methods in JavaScript
- getTime() ->Returns the numeric value of the specified date as the number of milliseconds since January 1, 1970, 00:00:00 UTC.
- setTime() ->Sets the Date object to the time represented by a number of milliseconds since January 1, 1970, 00:00:00 UTC.
- getTimezoneOffset() ->Returns the time-zone offset in minutes for the current locale.
- getUTCDate() ->Returns the day (date) of the month in the specified date according to universal time.
- setUTCDate() ->Sets the day of the month for a specified date according to universal time.
- getUTCDay() ->Returns the day of the week in the specified date according to universal time.
- getUTCFullYear() ->Returns the year in the specified date according to universal time.
- getUTCHours() ->Returns the hours in the specified date according to universal time.
- getUTCMilliseconds() ->Returns the milliseconds in the specified date according to universal time.
- getUTCMinutes() ->Returns the minutes in the specified date according to universal time.
- getUTCMonth() ->Returns the month in the specified date according to universal time.
- getUTCSeconds() ->Returns the seconds in the specified date according to universal time.
- getYear() ->Deprecated – Returns the year in the specified date according to local time. Use getFullYear instead.
- setYear() ->Deprecated – Sets the year for a specified date according to local time. Use setFullYear instead.
- setDate() ->Sets the day of the month for a specified date according to local time.
- getDate() ->Returns the day of the month for the specified date according to local time.
- setFullYear() ->Sets the full year for a specified date according to local time.
- setHours() ->Sets the hours for a specified date according to local time.
- setMilliseconds() ->Sets the milliseconds for a specified date according to local time.
- setMinutes() ->Sets the minutes for a specified date according to local time.
- getMonth() ->Returns the month in the specified date according to local time.
- setMonth() ->Sets the month for a specified date according to local time.
- getSeconds() ->Returns the seconds in the specified date according to local time.
- setSeconds() ->Sets the seconds for a specified date according to local time.
- setUTCFullYear() ->Sets the full year for a specified date according to universal time.
- setUTCHours() ->Sets the hour for a specified date according to universal time.
- setUTCMilliseconds() ->Sets the milliseconds for a specified date according to universal time.
- setUTCMinutes() ->Sets the minutes for a specified date according to universal time.
- setUTCMonth() ->Sets the month for a specified date according to universal time.
- setUTCSeconds() ->Sets the seconds for a specified date according to universal time.
- toDateString() ->Returns the “date” portion of the Date as a human-readable string.
- toGMTString() ->Deprecated – Converts a date to a string, using the Internet GMT conventions. Use toUTCString instead.
- toString() ->Returns a string representing the specified Date object.
- toTimeString() ->Returns the “time” portion of the Date as a human-readable string.
- valueOf() ->Returns the primitive value of a Date object.
- Date() ->Returns today’s date and time
- getDay() ->Returns the day of the week for the specified date according to local time.
- getFullYear() ->Returns the year of the specified date according to local time.
- toLocaleDateString() ->Returns the “date” portion of the Date as a string, using the current locale’s conventions.
- toLocaleFormat() ->Converts a date to a string, using a format string.
- toLocaleTimeString() ->Returns the “time” portion of the Date as a string, using the current locale’s conventions.
- getHours() ->Returns the hour in the specified date according to local time.
- getMilliseconds() ->Returns the milliseconds in the specified date according to local time.
- getMinutes() ->Returns the minutes in the specified date according to local time.
Few important links for learning:-
- Want to know the difference between Function and Method in JavaScript? Just click here.
- Want to know what is function and how to use them in JavaScript? Just click here.
- Want to know what are variables and how to use them in JavaScript? Just click here.
- Let’s see an example for User form validation in JavaScript. click here.
- Let’s understand JavaScript. what and how? click here.