The Math object is different from the above object. It can be said to be a common mathematics class, which has many mathematical methods used for various mathematical operations, but Math objects do not need to be constructed, you can directly use
In math. when performing data processing, round often encounters a situation where 81.25 retains a decimal number, and the value is 81.2. It is searched by material and math. the round rounding algorithm adopts the banker's rounding algorithm, which
In flash, the math class is a very common class. Through mathematical computation, we can achieve a lot of wonderful results. Here we will start from the most basic learning and add a math knowledge.
Let's take a look at the math class provided in
These three functions may be confusing for beginners. Now I am learning them and I will make a detailed record.
Math. Round () literally knows what it means. How can we get a number around a double or float number? The answer is rounding.
For
Math. Round is used to round the value by the specified small number,Is not.When this type of rounding is performed, It is rounded up to the nearest or rounded up to five.
In fact, in VB, VBScript, C #, J #, the number of round functions in the
Msdn does not provide a detailed description. An example is provided;
Math. Round (3.44, 1); // returns 3.4.math.round (3.45, 1); // returns 3.4.math.round (3.46, 1); // returns 3.5.
According to his example, the result is "five homes and six
First, let's take a look at The definition of three functions in JavaScript: The Definitive Guide, 4th Edition.
Math. ceil (): roundNumber up
Arguments: Any numeric value or expression
Returns: The closest integer greater than or equalX.
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This article briefly introduces Date (Date object) and Math object in JavaScript. For more information, see
Date object
1. What is a Date object?
A date object can store any date, and can be precise to the number of milliseconds (1/1000 seconds
Math. Round (11.5) and so on? Math. Round (-11.5) and so on?
The math class provides three methods related to rounding: Ceil, floor, and round. The functions of these methods correspond to the meanings of their English names. For example, the
1. discard the fractional part and keep the integer part parseInt (5/2) 2. rounded up. If there is a decimal number, add 1Math to the integer. ceil (5/2) 3, rounded down. math. round (5/2) 4, round down Math. floor (5/2) Math object method FF:
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