# How do you calculate tip in JavaScript?

## How do you calculate tip in JavaScript?

display = “block”; } //Calculate tip var total = (billAmt * serviceQual) / numOfPeople; //round to two decimal places total = Math. round(total * 100) / 100; //next line allows us to always have two digits after decimal point total = total. toFixed(2); //Display the tip document.

## How do you calculate tip example?

In general, the tip amount is the cost times 0. xx and your total including tip, is the cost times 1. xx where xx = the percent you want to leave. If you want to leave a 20% tip, multiply the cost by 0.20 to get the tip amount or multiply the cost by 1.20 to get the total including tip.

Can I make a calculator with JavaScript?

Here we have created a Calculator program using the JavaScript language, including HTML and CSS web programming. In this Calculator, we can perform basic operations like addition, multiplication, subtraction, and division. Now we perform some operation in the JavaScript program, as shown below.

How is electricity bill calculated in Javascript?

1. const numbers = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] const squaresOfEvenNumbers = numbers.filter(ele => ele % 2 == 0) .map(ele => ele ** 2); console.log(squaresOfEvenNumbers);
2. let [firstName, lastName] = [‘Foo’, ‘Bar’]
3. let {firstName, lastName} = { firstName: ‘Foo’, lastName: ‘Bar’ }

### How much should my tip be?

For starters, here’s a simple rule for restaurant tipping: Leave 15 to 20 percent of the pretax total of your bill. Don’t dip below 15 percent unless the service has been abysmalâ€”and never skip a tip.

### How is your electric bill calculated?

To calculate your electric bill, you’ll need to figure the energy usage of each of the appliances and electronic devices in your home….Calculate Energy Cost by Appliance

1. Multiply the device’s wattage by the number of hours the appliance is used per day.
2. Divide by 1000.
3. Multiply by your kWh rate.

How is electricity bill algorithm calculated?

Logic to calculate net electricity bill If unit consumed less or equal to 50 units. Then amt = unit * 0.50 . If unit consumed more than 50 units but less than 100 units. Then add the first 50 units amount i.e. 25 to final amount and compute the rest 50 units amount.