“Math.round ()” Kod odpowiedzi

Jak wyświetlić Inteiger do dziesiątego w JavaScript

Math.round(3.14159 * 100) / 100  // 3.14

3.14159.toFixed(2);              // 3.14 returns a string
parseFloat(3.14159.toFixed(2));  // 3.14 returns a number

Math.round(3.14159)  // 3
Math.round(3.5)      // 4
Math.floor(3.8)      // 3
Math.ceil(3.2)       // 4
Bright Beaver

JS zaokrąglanie

//There are meny ways of rounding...
Math.floor(5.5) //Answer 5, it alwas rounds down.
Math.round(5.5) //Answer 6, it simpily rounds to the closest whole number.
Math.ceil(5.5) //Answer 6, it alwas rounds up.

//You can do more things too...
Math.floor(5.57 * 10) / 10 //Answer 5.5, the number turns into 55.7, Then gets floored (55.0), Then gets divied, (5.5).
Determined Programmer

Zaokrąglanie w JavaScript

var avg=10.55;
console.log(Math.round(avg)); //Prints 11
Gorgeous Gerenuk

matematyka

Math.round((num + Number.EPSILON) * 100) / 100
Graceful Grebe

Runda matematyki

// There are many ways of rounding...
Math.ceil(5.5) // Answer 6, rounds up.
Math.round(5.5) // Answer 6, rounds to the closest whole number.
Math.floor(5.5) // Answer 5, rounds down.

// ceil is short for ceiling(up), floor is down...
shahul

Math.round ()

The Math.round()  function 
returns the value of a number rounded to the nearest integer.

Math.round(x)
// If x = 0.6 it gives you 1; if x = 2.5 it gives you 3; 
// if x=2.49999 it gives you 2.  

Math.round( 20.49); //  20
Math.round( 20.5 ); //  21
Math.round( 42   ); //  42
Math.round(-20.5 ); // -20
Math.round(-20.51); // -21
Oleksandr Shevchuk

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