How to change the text and image by just clicking a button in JavaScript ?

The image and text can be changed by using javascript functions and then calling the functions by clicking a button. We will done that into 3 sections., in the first sesction we will create the structure by using only HTML in the second section we will desing minimally to make it attractive by using simple CSS and in the third section we will add the JavaScript code to perform the task

  • HTML Code: In this section we create the structure plus we will add Bootstrap cdn link for the button desing and the fonts.

HTML

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<!DOCTYPE html>
<html lang="en">
   <head>
      <meta charset="UTF-8">
      <meta name="viewport" 
            content="width=device-width, initial-scale=1.0">
      <link rel="stylesheet" href=
   </head>
   <body>
      <div class="container">
         <div class="row">
            <div class="col-md-3"></div>
            <div class="col-md-6">
               <h1 id="message">
                   Hii! GeeksforGeeks people
               </h1>
               <img  id="myImage" 
                     src="img/photo1.jpg"  >
            </div>
            <div class="col-md-3"></div>
         </div>
      </div>
      <div class="button">
         <button class="btn btn-warning" 
                 onclick=before();>
             Before
         </button>
         <button  class="btn btn-success" 
                  onclick=afterr();>
             Afterr
         </button>
      </div>
   </body>
</html>

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  • CSS Code: In this section we will use some basic CSS styling to make it look as normal as possible.

CSS

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<style>
    img{
    height: 500px;
    width: 450px;
    }
    h1{
    color: darkgreen;
    margin-top: 20px;
    font-family: Comic Sans MS, cursive, sans-serif;
    }
    .button{
    margin-left: 45%;
    }
</style>

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  • Javascript Code: In this section, we will define JavaScript functions and we have taken two images, which are present in a separate “img” folder.

Javascript

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<script>
    function before(){
        document.getElementById('myImage')
        .src="img/photo1.jpg";
        document.getElementById('message')
        .innerHTML="Hii! GeeksforGeeks people";
    }
      
    function afterr(){
        document.getElementById('myImage')
        .src="img/photo2.jpg";
        document.getElementById('message')
        .innerHTML="Bye! GeeksforGeeks people";
    }
</script>

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Complete Code: It is the combination of above codes of HTMl, CSS and JavaScript. 

html

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<!DOCTYPE html>
<html lang="en">
   <head>
      <meta charset="UTF-8">
      <meta name="viewport" 
            content="width=device-width, initial-scale=1.0">
      <link rel="stylesheet" href=
      <style>
         img{
         height: 500px;
         width: 450px;
         }
         h1{
         color: darkgreen;
         margin-top: 20px;
         font-family: Comic Sans MS, cursive, sans-serif;
         }
         .button{
         margin-left: 45%;
         }
      </style>
      <script>
         function before(){
             document.getElementById('myImage')
             .src="img/photo1.jpg";
             document.getElementById('message')
             .innerHTML="Hii! GeeksforGeeks people";
         }
           
         function afterr(){
             document.getElementById('myImage')
             .src="img/photo2.jpg";
             document.getElementById('message')
             .innerHTML="Bye! GeeksforGeeks people";
         }
      </script>
   </head>
   <body>
      <div class="container">
         <div class="row">
            <div class="col-md-3"></div>
            <div class="col-md-6">
               <h1 id="message">
                   Hii! GeeksforGeeks people
               </h1>
               <img  id="myImage" 
                     src="img/photo1.jpg"  >
            </div>
            <div class="col-md-3"></div>
         </div>
      </div>
      <div class="button">
         <button class="btn btn-warning" 
                 onclick=before();>
             Before
         </button>
         <button  class="btn btn-success" 
                  onclick=afterr();>
             Afterr
         </button>
      </div>
   </body>
</html>

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Output:

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