How to change the src attribute of an img element in JavaScript/jQuery?-JS Tutorial-php.cn

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

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Release： 2023-08-23 16:49:14

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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 ";

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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

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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.

Change the src attribute of an img element

The image shown below will be changed once you click the button.

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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 ");

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

algorithm

Step One - In the of the

Change the src attribute of an img element using jQuery

The image shown below will be changed once you click the button.

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prop() method − The prop() method can be used as we used the attr() method in previous example. It takes property name and the new value to be assigned as parameters.

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Changing the src attribute of an img element using jQuery

The image shown below will be changed once you click the button.

In this article, we have discussed about the three different methods of changing the value of the src attribute of an img element using the JavaScript as well as jQuery. We have understand all the methods in details by practically implementing them inside the code examples, which helps to build the practical knowledge of the concepts.

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