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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