How to Show Images on Click using HTML ?
Occasionally, web pages might contain images that are not relevant to the content of that page. These unusual images are loaded while the web page is loading, and this increases the loading time. More loading time on web pages can decrease the number of visitors.
In this article, we come up with a solution to this problem. We will learn how to show images only when users click on them using HTML, CSS, and JavaScript.
Changing display properties of <img> attribute using JavaScript: In this method, we will set the display property inside the <img> tag using the style attribute. We have to set “display: none” for the image. After that, when the user clicks on the button, we will call a JavaScript function that will access the image to change its display property to block.
Steps:
- Create <img> element in the HTML code.
- Add style to <img> element and set display properties to none.
- Create a JavaScript “show()” function that can access the image and change the display property to block.
- Add a button in HTML code that calls the “show()” function when the user clicks on it.
Example: In this example, we will change the display property of <img> attributes using Javascript
HTML
<!DOCTYPE html><html><head> <style> /* Set display to none for image*/ #image { display: none; } </style></head><body> <div> <h1>GeeksforGeeks</h1> <h3>Click on the button to see image</h3> <!-- Add id to image --> <img id="image" src= alt="GFG image" /> </div> <button type="button" onclick="show()" id="btnID"> Show Image </button> <script> function show() { /* Access image by id and change the display property to block*/ document.getElementById('image') .style.display = "block"; document.getElementById('btnID') .style.display = "none"; } </script></body></html> |
Output:
Using <img> tag with empty src attribute: Obviously, with an empty src value, the user will not be able to see the image on the web page. We will set a value of the src attribute using the JavaScript function which is implemented for the user to click on the button. However, some browsers such as Chrome do not remove the broken image icon while using this method.
Steps:
- Create <img> element with an empty src attribute.
- Create a “show()” function in JavaScript which can get the image and add the image source link to the src attribute.
- Add an HTML button that calls the “show()” function, when the user clicks on it.
Example: In this example, we will use the <img> tag with an empty src attribute
HTML
<!DOCTYPE html><html><body> <div> <h1>GeeksforGeeks</h1> <h3>Click on the button to see image</h3> <!-- img element without src attribute --> <img id="image" src="" /> </div> <button type="button" onclick="show()" id="btnID"> Show Image </button> <script> function show() { /* Get image and change value of src attribute */ let image = document.getElementById("image"); image.src = document.getElementById("btnID") .style.display = "none"; } </script></body></html> |
Output:
Using Bootstrap Modal: We will use a Bootstrap modal to show an image while clicking on the button. We need to integrate the bootstrap CDN with the HTML code to use it. We can add bootstrap CDN to our HTML file as added in the below example code.
Steps:
- Add bootstrap CDN to the HTML file.
- Create a Bootstrap modal and add an image to the body of the modal.
- Create an HTML button to trigger a modal.
Example: In this example, we will see the use of the Bootstrap model.
HTML
<!DOCTYPE html><html><head> <link rel="stylesheet" href= integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous"></head><body> <h2>GeeksforGeeks</h2> <p><b>Click on the button to see image</b></p> <!-- Button to launch a modal --> <button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal"> Show image </button> <!-- Modal --> <div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true"> <div class="modal-dialog" role="document"> <div class="modal-content"> <!-- Add image inside the body of modal --> <div class="modal-body"> <img id="image" src= alt="Click on button" /> </div> <div class="modal-footer"> <button type="button" class="btn btn-secondary" data-dismiss="modal"> Close </button> </div> </div> </div> </div> <!-- Adding scripts to use bootstrap --> integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"> </script> <script src= integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"> </script> <script src= integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"> </script></body></html> |
Output:
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