javascript math methods

                                    math in Javascript
// finding absolute value of a number 
var number = -8;
let output = Math.abs(number);
console.log(output);

var num =6;
nums = Math.abs(num);
console.log(nums);

// finding ceil(khali upre di tanbo) of a number
var mynumber = 9.59;
let myceil = Math.ceil(mynumber);
console.log(myceil);

//  finding floor (kacher nichor shonka tanbo) of a number
var yournumber = 9.59;
let yourfloor = Math.floor(yournumber);
console.log(yourfloor);

// finding round of a number
var myround = 9.59;
let round = Math.round(myround)
console.log(round);

//finding a random number 
var outputs = Math.random()*8;
outputs = Math.floor(outputs)
console.log(outputs);

// making it on a for loop

for( let i=0; i<=20; i++){
    var outputs = Math.random()*8;
outputs = Math.floor(outputs)
console.log(outputs);
}
// github - redowanrafy707

                                    
Math.ceil(4.9);     // returns 5

Math.ceil(4.7);     // returns 5

Math.ceil(4.4);     // returns 5

Math.ceil(4.2);     // returns 5

Math.ceil(-4.2);     // returns -4

 

                                    E: 2.718281828459045
LN2: 0.6931471805599453
LN10: 2.302585092994046
LOG2E: 1.4426950408889634
LOG10E: 0.4342944819032518
PI: 3.141592653589793
SQRT1_2: 0.7071067811865476
SQRT2: 1.4142135623730951
abs: ƒ abs()
acos: ƒ acos()
acosh: ƒ acosh()
asin: ƒ asin()
asinh: ƒ asinh()
atan: ƒ atan()
atan2: ƒ atan2()
atanh: ƒ atanh()
cbrt: ƒ cbrt()
ceil: ƒ ceil()
clz32: ƒ clz32()
cos: ƒ cos()
cosh: ƒ cosh()
exp: ƒ exp()
expm1: ƒ expm1()
floor: ƒ floor()
fround: ƒ fround()
hypot: ƒ hypot()
imul: ƒ imul()
log: ƒ log()
log1p: ƒ log1p()
log2: ƒ log2()
log10: ƒ log10()
max: ƒ max()
min: ƒ min()
pow: ƒ pow()
random: ƒ random()
round: ƒ round()
sign: ƒ sign()
sin: ƒ sin()
sinh: ƒ sinh()
sqrt: ƒ sqrt()
tan: ƒ tan()
tanh: ƒ tanh()
trunc: ƒ trunc()
Symbol(Symbol.toStringTag): "Math"
__proto__: Object

                                    JS Numbers and Math:

Number Properties:
MAX_VALUE
The maximum numeric value representable in JavaScript
MIN_VALUE
Smallest positive numeric value representable in JavaScript
NaN
The “Not-a-Number” value
NEGATIVE_INFINITY
The negative Infinity value
POSITIVE_INFINITY
Positive Infinity value

Number Methods:
toExponential()
Returns a string with a rounded number written as exponential notation
toFixed()
Returns the string of a number with a specified number of decimals
toPrecision()
String of a number written with a specified length
toString()
Returns a number as a string
valueOf()
Returns a number as a number

Math Properties:
E Euler’s number
LN2 The natural logarithm of 2
LN10 Natural logarithm of 10
LOG2E Base 2 logarithm of E
LOG10E Base 10 logarithm of E
PI The number PI
SQRT1_2 Square root of 1/2
SQRT2 The square root of 2

Math Methods:
abs(x)
Returns the absolute (positive) value of x
acos(x)
The arccosine of x, in radians
asin(x)
Arcsine of x, in radians
atan(x)
The arctangent of x as a numeric value
atan2(y,x)
Arctangent of the quotient of its arguments
ceil(x)
Value of x rounded up to its nearest integer
cos(x)
The cosine of x (x is in radians)
exp(x)
Value of Ex
floor(x)
The value of x rounded down to its nearest integer
log(x)
The natural logarithm (base E) of x
max(x,y,z,...,n)
Returns the number with the highest value
min(x,y,z,...,n)
Same for the number with the lowest value
pow(x,y)
X to the power of y
random()
Returns a random number between 0 and 1
round(x)
The value of x rounded to its nearest integer
sin(x)
The sine of x (x is in radians)
sqrt(x)
Square root of x
tan(x)
The tangent of an angle

                                    //Math in JS is similar and different to the one in school
//Like: "+", "-" signs are the same. But "X" and "÷" are replaced with "*" and "/" respectivly
//You can do math both with variables and normal numbers
________________________________________________________________________________
								Normal Number Examples
                                
4+4 = 8;
4-4 = 0;
4*4 = 16;
4/4 = 1;
________________________________________________________________________________
								Variable Examples
                                
num1 = 0;
num2 = 0;
ans = 0;

num1 = 4;
num2 = 64

num1 + num2 = 68
num1 - num2 = 60
num1 * num2 = 24
num1 / num2 = 256;

num1 + num2 = ans;
num1 - num2 = ans;
num1 * num2 = ans;
num1 / num2 = ans;
________________________________________________________________________________
Now, you can use the document.getElementByID("").innerHTML = ans; to set the answer



//I hope this post helped you!