In this Javascript example tutorial we will create simple Calculator using If-Else conditions. In this example we can learn how to use math operations in javascript like addition, substraction, multiplication...
Let write simple calculator example code
// Ask user to select the math operation symbol to perform actions const operator = prompt('Select an operator ( +, -, * or / ): '); // Ask user to enter numbers to perform above operations const num1 = parseFloat(prompt('Enter first number: ')); const num2 = parseFloat(prompt('Enter second number: ')); let result; // Write if...else condition if (operator == '+') { result = num1 + num2; } else if (operator == '-') { result = num1 - num2; } else if (operator == '*') { result = num1 * num2; } else { result = num1 / num2; } // Out put for the user operation on given numbers console.log(`${num1} ${operator} ${num2} = ${result}`); |
Output:
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Select an operator ( +, -, * or / ): - Enter first number: 77 Enter second number: 8 77 - 7 = 69 |
