Build a calculator simple javascript

create a simple counting Application where simple calculations can be done with addition, subtraction, multiplication and division. use the attached html file. 1. When the form is submitted so the two input numbers (Value A & Value B) used to make a calculation. 2. Any calculation is performed depends on the arithmetic operation selected from the drop down menu "arithmeticOperator" 3. The result of the calculation shall be printed in the output element with the name "result" 4. All JavaScript must be written in an external file and inserted into the HTML document's head element. 5. Please include a brief reflection in which you explain what your code does and it shows that you understand what your code does. Approximately 200-300 words Other things: Your code should include the following: • Event listeners and handlers • conditional statement (if or switch) • Selector form