Javascript language

Math, String,Number Object Methods
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Math Object Methods

Operator Description
abs(x) Returns the absolute value of x
acos(x) Returns the arccosine of x, in radians
asin(x) Returns the arcsine of x, in radians>
atan(x) Returns the arctangent of x as a numeric value between -PI/2 and PI/2 radians
atan2(y,x) Returns the arctangent of the quotient of its arguments
ceil(x) Returns x, rounded upwards to the nearest integer
cos(x) Returns the cosine of x (x is in radians)
exp(x) Returns the value of Ex
floor(x) Returns x, rounded downwards to the nearest integer
log(x) Returns the natural logarithm (base E) of x
max(x,y,z,...,n) Returns the number with the highest value
min(x,y,z,...,n) >Returns the number with the lowest value
pow(x,y) >Returns the value of x to the power of y
random() Returns a random number between 0 and 1
round(x) Rounds x to the nearest integer
sin(x) Returns the sine of x (x is in radians)
sqrt(x) Returns the square root of x
tan(x) Returns the tangent of an angle

Number Object Methods

Operator Description
toExponential(x) Converts a number into an exponential notation
toFixed(x) Formats a number with x numbers of digits after the decimal point
toPrecision(x) Formats a number to x length
toString() Converts a Number object to a string
valueOf() Returns the primitive value of a Number object

 

String Object Methods

Method Description
charAt() Returns the character at the specified index
charCodeAt() Returns the Unicode of the character at the specified index
concat() Joins two or more strings, and returns a copy of the joined strings
fromCharCode() Converts Unicode values to characters
indexOf() Returns the position of the first found occurrence of a specified value in a string
astIndexOf() Returns the position of the last found occurrence of a specified value in a string
match() Searches for a match between a regular expression and a string, and returns the matches
valueOf() Returns the primitive value of a String object>
slice() Extracts a part of a string and returns a new string
replace() Searches for a match between a substring (or regular expression) and a string, and replaces the matched substring with a new substring
search() Searches for a match between a regular expression and a string, and returns the position of the match
split() Splits a string into an array of substrings
substr() Extracts the characters from a string, beginning at a specified start position, and through the specified number of character
substring() Extracts the characters from a string, between two specified indices
toLowerCase() Converts a string to lowercase letters
toUpperCase() Converts a string to uppercase letters
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