JavaScript implements simple calculator function

This article example shares the specific code of JavaScript to implement a simple calculator function for your reference. The specific content is as follows

The specific requirements are as follows:

Implementation code:

<html>
  <head>
    <meta charset="utf-8">
    <title>Calculator</title>
    <script>
      function myck(type){
        var num1 = document.getElementById("num1");
        var num2 = document.getElementById("num2");
        if(type==1){
          // Calculation operation var result = parseInt(num1.value) + parseInt(num2.value);
          alert(result);
          document.getElementById("resultDiv").innerText = "Final calculation result: " + result;
        }else if(type==2){
    var result = parseInt(num1.value) - parseInt(num2.value);
             alert(result);
             document.getElementById("resultDiv").innerText = "Final calculation result: " + result;
   }
     else if(type==3){
     var result = parseInt(num1.value) * parseInt(num2.value);
     alert(result);
     document.getElementById("resultDiv").innerText = "Final calculation result: " + result;
      }
         else if(type==4){
        if(confirm("Is it cleared correctly?")){
        // Clear num1.value = "";
        num2.value = "";
        document.getElementById("resultDiv").innerText="";
      }
           }
      }
    </script>
  </head>
  <body>
    <div style="margin-top: 100px;margin-left: 500px;">
      <span style="font-size: 60px;">Calculator</span>   
    </div>
    <div>
      <div class="innerDiv" style="margin-left: 490px;">
        Number 1: <input id="num1" type="number" placeholder="Please enter number 1"> 
      </div>
    </div>
    <div>
      <div class="innerDiv" style="margin-left:490px;">
      Number 2: <input id="num2" type="number" placeholder="Please enter number 2">
     </div> 
    </div>
    <div>
      <div style="margin-left: 500px;" class="innerDiv">
        <input type="button" onclick="myck(1)" value="Add">
    <input type="button" onclick="myck(2)" value="Subtract">
    <input type="button" onclick="myck(3)" value="Multiply">
        <input type="button" onclick="myck(4)" value="Clear&nbsp;&nbsp;Empty">
      </div> 
    </div>
    <div id="resultDiv">

    </div>
  </body>
  <style>
    .innerDiv{
      margin-left: 420px;
      margin-top: 20px;
    }
  </style>
</html>

The above is the full content of this article. I hope it will be helpful for everyone’s study. I also hope that everyone will support 123WORDPRESS.COM.

You may also be interested in:

A simple calculator written in javascript, with a lot of content and practical methods. Recommended
Simple js code to realize calculator operation
js implements a simple calculator
HTML+JS implements simple calculator code (addition, subtraction, multiplication and division)
Simple calculator implementation code written in JS
javascript-simple calculator implementation step decomposition (with pictures)
Pure javascript code to implement calculator functions (three methods)
js implements a simple calculator
Web calculator A JS calculator
Simple implementation of js web calculator

<<: How to use nginx to simulate blue-green deployment

>>: How to solve the problem that MySQL cannot start because it cannot create PID