"calculator"
Bootstrap 3.0.0 Snippet by harunpehlivan

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<link href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script> <script src="//code.jquery.com/jquery-1.11.1.min.js"></script> <!------ Include the above in your HEAD tag ----------> İŞTE KOD <!doctype html> <html> <head> <meta charset="utf-8"> <title>JavaScript Projects</title> <meta ID="description" content=""> <meta ID="viewport" content="width=device-width, initial-scale=1"> <!-- Latest compiled and minified CSS --> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous"> <style> #output { height: 45px; background-color: black; color: aqua; width: 100%; font-size: 2em; padding: 5px; text-align: right; margin-bottom: 25px; overflow: hidden; } #mycalcu { width: 350px; background-color: dimgray; height: 350px; padding: 5px; } .cbutton { font-size: 2em; width: 40px; margin: 4px; padding: 4px; } .container { padding: 25px; } </style> </head> <body> <div class="container"> <div id="mycalcu"> <div class="col-xs-12"> <div id="output"></div> <div class="col-xs-12"> <div class="btn btn-primary cbutton">1</div> <div class="btn btn-primary cbutton">2</div> <div class="btn btn-primary cbutton">3</div> <div class="btn btn-primary cbutton">+</div> <div class="btn btn-primary cbutton">C</div> </div> <div class="col-xs-12"> <div class="btn btn-primary cbutton">4</div> <div class="btn btn-primary cbutton">5</div> <div class="btn btn-primary cbutton">6</div> <div class="btn btn-primary cbutton">-</div> </div> <div class="col-xs-12"> <div class="btn btn-primary cbutton">7</div> <div class="btn btn-primary cbutton">8</div> <div class="btn btn-primary cbutton">9</div> <div class="btn btn-primary cbutton">*</div> </div> <div class="col-xs-12"> <div class="btn btn-primary cbutton">.</div> <div class="btn btn-primary cbutton">0</div> <div class="btn btn-primary cbutton">=</div> <div class="btn btn-primary cbutton">/</div> </div> </div> </div> </div> <script> var mybtn = document.getElementsByClassName("cbutton"); var myOutput = document.getElementById("output"); var myCal = ''; var myCom = false; var mySwitch = false; var myOpe = ["+", "-", "*", "/"]; //console.log(mybtn); for (var i = 0; i < mybtn.length; i++) { mybtn[i].addEventListener("click", function () { var myValue = this.innerHTML; if (myCom || myCal == "0") { myCom = false; myCal = ''; } if (myValue == "+" || myValue == "-" || myValue == "*" || myValue == "/") { if (mySwitch) { mySwitch = false; if (myOpe.indexOf(myOutput.innerHTML.slice(-1)) > -1) { myCal = myCal.substring(0, myCal.length - 1); } else { myCal = eval(myCal); } } mySwitch = true; } if (myValue == "=") { myValue = ''; if (myOpe.indexOf(myOutput.innerHTML.slice(-1)) == -1) { myCal = eval(myCal); } } else if (myValue == "C") { myCal = 0; myCom = true; } else if (myOutput.innerHTML.indexOf(".") > -1 && myValue == ".") { myValue = ''; } else { myCal = myCal + myValue; } myOutput.innerHTML = myCal; }); } </script> </body> </html>

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