math functions in javascript with examples

the round is rounded ... Ceiling is rounding up. Float is rounded downHere are a few ways to round decimal values to integers: Math.ceil (), Math.floor (), and Math.Round (). These three methods follow the following rounding rules, respectively:Math.ceil () performs an upward rounding, that is, it always rounds the value up to the nearest integer;Math.floor () Performs a downward rounding, that is, it always rounds the value down to the nearest integer;Math.Round () performs a standard rounding,

to 25.5, or 25. Finally, Math.floor () returns 25 for all values between 25 and 26 (not including 26).Here are some additions:Ceil (): The fractional part is rounded to the integer part.Such as:Math.ceil (12.2)//Return 13math.ceil (12.7)//return 13math.ceil (12.0)//return 12Floor (): All are left, only integers are reserved.Such as:Math.floor (12.2)//Return 12math.floor (12.7)//return 12math.floor (12.0)//return 12Round (): RoundingSuch as:Math.Round (12.2)//Return 12math.round (12.7)//return 1

Introduction to using JavaScript Math. ceil () Functions Math. ceil (x) -- returns the smallest integer greater than or equal to the number parameter (take the entire function) and rounds up the number. The following is a good example. If you are interested, refer Math. c

Examples of parameter passing in javascript Functions and javascript examples I believe that every new javascript contact will be confused when passing function parameters. The reason is that its syntax is too weird. You define a

Examples of common JavaScript regular functions and javascript examples This example describes common regular functions in JavaScript. We will share this with you for your reference. Th

Script> vara=3.14; varA1=Math.ceil (a);//the smallest integer greater than the current decimal;alert (A1); varA2=Math.floor (a);//the largest integer less than the current decimal;alert (A2); varA3=Math.sqrt (a);//Open Squarealert (A3); varA4=Math.Round (a);//Roundingalert (A4); varA5=math.random ();//random number, between 0-1alert (A5);Script>Script> vars="ABC"; varReg="ABDC"; varx=S.match (reg);//s represents a string, and Reg represents a string that matches both, and returns a null if

Functions and examples of isPrototypeOf functions in JavaScript This article mainly introduces the functions and examples of isPrototypeOf functions in

Examples of calling js anonymous functions (in various forms) and JavaScript Functions An anonymous function is a function without a real name. JavaScript anonymous functions have various forms and are easy to get confused. The fo

Examples of calling and writing anonymous functions in Javascript (multiple) and javascript There are multiple methods to define functions in Javascript, and the direct quantity of functions