Number 3/3
Other Math Functions
JavaScript has a library by the name of Math that has many built-in mathematics functions and methods. Let’s look at a few of them.
Math.random():
TheMath.random()is a function in JavaScript, that gives random numbers between0and1but not including1, for example.
123console.log(Math.random()); console.log(Math.random()); console.log(Math.random());
As you can see we get three different numbers between 0 and 1.
Note:
You may get different output as Math.random() gives random numbers.
Math.max()andMath.min():
TheMath.max()returns the greatest number of all the numbers passed in as an argument whileMath.min()returns the smallest one.
12console.log(Math.max(3, 5, -10, 100, 1)); console.log(Math.min(1, 2, 6, 0, -15));
Math.pow(base, power):
TheMath.pow(base, power)returnsbaseraised to the givenpower, for example.
1console.log(Math.pow(2, 10));
Swipe to start coding
The task is to find the volume of a cylinder. The radius and height variables are given to storing the radius and the height of the cylinder. The formula for the volume of the cylinder is:
V = πhr²
where π is the Math PI having the value of 3.1415, r is the radius, and h is the height. Your task is to create a new const variable named PI and store 3.1415 in it and implement this formula storing the result in a variable named volume.
Рішення
Summary
- JavaScript provides the facility of rounding numbers.
- We can check whether a variable is finite or infinite through the
isFinite()function. - We can check whether a variable is a number or not through the
isNaN()function. - The
Math.random()function is used to get a random numeric value from0to1(excluding1).
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Other Math Functions
JavaScript has a library by the name of Math that has many built-in mathematics functions and methods. Let’s look at a few of them.
Math.random():
TheMath.random()is a function in JavaScript, that gives random numbers between0and1but not including1, for example.
123console.log(Math.random()); console.log(Math.random()); console.log(Math.random());
As you can see we get three different numbers between 0 and 1.
Note:
You may get different output as Math.random() gives random numbers.
Math.max()andMath.min():
TheMath.max()returns the greatest number of all the numbers passed in as an argument whileMath.min()returns the smallest one.
12console.log(Math.max(3, 5, -10, 100, 1)); console.log(Math.min(1, 2, 6, 0, -15));
Math.pow(base, power):
TheMath.pow(base, power)returnsbaseraised to the givenpower, for example.
1console.log(Math.pow(2, 10));
Swipe to start coding
The task is to find the volume of a cylinder. The radius and height variables are given to storing the radius and the height of the cylinder. The formula for the volume of the cylinder is:
V = πhr²
where π is the Math PI having the value of 3.1415, r is the radius, and h is the height. Your task is to create a new const variable named PI and store 3.1415 in it and implement this formula storing the result in a variable named volume.
Рішення
Summary
- JavaScript provides the facility of rounding numbers.
- We can check whether a variable is finite or infinite through the
isFinite()function. - We can check whether a variable is a number or not through the
isNaN()function. - The
Math.random()function is used to get a random numeric value from0to1(excluding1).
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