简体中文(ZH-CN) English(EN) 繁体中文(ZH-TW) 日本語(JA) 한국어(KO) Melayu(MS) Français(FR) Deutsch(DE)
Home > Web Front-end > JS Tutorial > body text

How to change the src attribute of an img element in JavaScript/jQuery?

WBOY
Release： 2023-08-23 16:49:14
forward
2627 people have browsed it

Using JavaScript and jQuery, there are different ways to change the image path given in the src attribute of the How to change the src attribute of an img element in JavaScript/jQuery? element in an HTML document.

How to use JavaScript to change the src attribute of the img element−

  • Use the src attribute in JavaScript.

How to use jQuery to change the src attribute of the img element−

  • Use attr() method

  • Use prop() method

Let us discuss the above listed methods of changing the src of the img element in detail one by one.

Using the src attribute in JavaScript

JavaScript allows us to use the src attribute to get the value that has been assigned to it, and also to update or change the value of the same attribute. This is a very common way to change the value of the src attribute of an img element.

Syntax

The following syntax will explain to you how to use the src attribute in JavaScript to change the value of the src attribute of the img element -

Selected_image_element.src = " new value ";
Copy after login

Let us understand the practical implementation of this approach through a code example.

algorithm

  • Step 1 − In the first step, we will add an img element with a src attribute associated with it, whose value we will change later using the src property in JavaScript.

  • Step 2 - In this step, we will add a button element with an onclick event and call a function to change the src of the image when the user clicks the button.

  • Step 3 - In the next step, we will define a JavaScript function in which we will get the img element using its ID and then change the src attribute using Switch between two images.

  • Step 4 − In the last step, we will assign the function to the onclick event defined in the last step to see the changes on user screen.

The Chinese translation of

Example

is:

Example

The following example will explain to you how to actually use the src attribute in JavaScript to change the src attribute of an img. 

<html>
<body>
   <h2>Change the src attribute of an img element</h2>
   <p id = "upper">The image shown below will be changed once you click the button.</p>
   <img src =  "https://img.php.cn/" id = "image"> <br> <br>
   <button id = "btn" onclick = "changeSrc()">Click to change the Image</button>
   <p id = "result"> </p>
   <script>
      var result = document.getElementById("result");
      var upper = document.getElementById("upper");
      function changeSrc() {
         var img = document.getElementById('image');
         if (img.src == "https://img.php.cn/") {
            img.src = "https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSoLnvRnTNP2rojd7e9b_Ilw5zZkSlPotSPIA&usqp=CAU";
            result.innerHTML += " The src of above img is changed from <b> Link 1 </b> to " + " <b> Link 2 </b> <br>";
         }
         else {
            img.src = "https://img.php.cn/";
            result.innerHTML += " The src of above img is changed from <b> Link 2 </b> to " + " <b> Link 1 </b> <br>";
         }
         upper.innerHTML = " The image shown previously is replaced by some other image as <b> src attribute of img is changed. </b> <br> ";
      }
   </script>
</body>
</html>
Copy after login

In this example, we use the src attribute in JavaScript to change the src attribute of the img element in the HTML document. Here, we switch between two images every time the button is clicked.

Using the attr() method in jQuery

We can also use the attr() method in JavaScript to change the src attribute.

attr() method - The attr() method accepts two parameters. The first parameter is the name of the attribute to be changed, expressed in string form, and the other parameter is the new value to be assigned to the attribute. value.

Syntax

The following syntax will explain to you how the attr() method with parameters is implemented−

attr(" attribute_name ", " new_value ");
Copy after login

Let us understand the implementation of this method in detail through a code example.

algorithm

  • Step One - In the of the

    Popular Tutorials
    More>
    Related Tutorials
    Popular Recommendations
    Latest courses
    Latest Downloads
    More>
    Web Effects
    Website Source Code
    Website Materials
    Front End Template
About us Disclaimer Sitemap
php.cn：Public welfare online PHP training，Help PHP learners grow quickly！