Avinash kumar raut

How to make Calculator by using HTML ,CSS and JAVASCRIPTS HTML code for making Calculator.                                                                                                           < html >     < head >         < title >Calculator</ title >     </ head >     < link rel = "stylesheet" href = "calculator.css" >     < body >     < div class = "main" >         < input type = "text" id = 'res' >     < div class = "btn" >         < input type = "button" value = "C" onclick = " Clear ()" >         < input type = "button" value = "%" onclick = " Solve ('%')" >         < input type = "button" value = "←" onclick = " Back ('←')" >         < input type = "button" value = "/" onclick = " Solve ('