jquery change image src with code examples 2

jQuery is a powerful JavaScript library that makes it easy to manipulate the Document Object Model (DOM) and handle events on a website. One of the most common tasks that jQuery is used for is changing the source (src) attribute of an image element. In this article, we will show you how to use jQuery to change the src attribute of an image with code examples.

Example 1: Changing the src of an image with a specific ID

The first example shows how to change the src of an image with a specific ID. In this example, we have an image with the ID "myImage" and we want to change the src to "new-image.jpg".

<img id="myImage" src="old-image.jpg">

$(document).ready(function(){
    $("#myImage").attr("src","new-image.jpg");
});

In this example, we are using the $(document).ready() function to ensure that the script runs after the page has loaded. The $("#myImage") selector is used to select the image element with the ID "myImage". The attr() function is used to set the src attribute to "new-image.jpg".

Example 2: Changing the src of an image on a button click

In this example, we will show how to change the src of an image when a button is clicked. We have an image with the ID "myImage" and a button with the ID "changeImage". When the button is clicked, the src of the image will be changed to "new-image.jpg".

<img id="myImage" src="old-image.jpg">
<button id="changeImage">Change Image</button>

$(document).ready(function(){
    $("#changeImage").click(function(){
        $("#myImage").attr("src","new-image.jpg");
    });
});

In this example, we are using the $("#changeImage").click() function to attach a click event to the button with the ID "changeImage". When the button is clicked, the function inside the click() function is executed. This function uses the $("#myImage") selector to select the image element with the ID "myImage" and the attr() function to set the src attribute to "new-image.jpg".

Example 3: Changing the src of an image on hover

In this example, we will show how to change the src of an image when the mouse hovers over it. We have an image with the ID "myImage" and we want to change the src to "new-image.jpg" when the mouse hovers over it.

<img id="myImage" src="old-image.jpg">

$(document).ready(function(){
    $("#myImage").hover(function(){
        $(this).attr("src","new-image.jpg");
    });
});

In this example, we are using the $("#myImage").hover() function to attach a hover event to the image with the ID "myImage". When the mouse hovers over the image, the function inside the hover() function is executed. This function uses the $(this) selector to select the current image element that the mouse is hovering over and

• The attr() function is used to set the src attribute to "new-image.jpg".

In addition to changing the src attribute of an image, jQuery can also be used to manipulate other attributes of an image such as the alt, width, and height attributes. For example, you can use the following code to change the alt attribute of an image with the ID "myImage" to "new-alt":

$(document).ready(function(){
    $("#myImage").attr("alt","new-alt");
});

Another common use case for jQuery is to change the CSS styles of an element. You can use the css() function to change the CSS styles of an image, for example, you can use the following code to change the width and height of an image with the ID "myImage" to 100px:

$(document).ready(function(){
    $("#myImage").css({"width":"100px","height":"100px"});
});

jQuery also provide a way to animate the change of css properties of an element, this is done by using .animate() function. For instance, if we want to change the width of an image from 100px to 200px, we can use the following code:

$(document).ready(function(){
    $("#myImage").animate({width: "200px"}, 2000);
});

In this example, the image width will change to 200px in 2 seconds (2000ms).

In conclusion, jQuery makes it easy to manipulate the DOM and handle events on a website. The examples in this article have shown you how to use jQuery to change the src attribute of an image, but you can also use it to manipulate other attributes and CSS styles of an element. jQuery also provide animation functionality which can make the change of the DOM more interactive and visually pleasing.

Popular questions

1. What is jQuery and why is it useful for changing the src attribute of an image?

   • jQuery is a powerful JavaScript library that makes it easy to manipulate the Document Object Model (DOM) and handle events on a website. It is useful for changing the src attribute of an image because it provides a simple and efficient way to select and manipulate elements on a webpage.

2. How do you use the attr() function in jQuery to change the src of an image?

   • The attr() function is used to set the value of a specific attribute of an element. To change the src of an image, you can use the $("#myImage").attr("src","new-image.jpg"); where "#myImage" is the ID of the image element and "new-image.jpg" is the new src.

3. How can you change the src of an image when a button is clicked?

   • To change the src of an image when a button is clicked, you can use the $("#changeImage").click(function(){...}); function to attach a click event to the button with the ID "changeImage". Inside the function, you can use the $("#myImage").attr("src","new-image.jpg"); to change the src of the image with the ID "myImage" to "new-image.jpg"

4. How can you change the src of an image when the mouse hovers over it?

   • To change the src of an image when the mouse hovers over it, you can use the $("#myImage").hover(function(){...}); function to attach a hover event to the image with the ID "myImage". Inside the function, you can use the $(this).attr("src","new-image.jpg"); to change the src of the image to "new-image.jpg"

5. Can jQuery be used to animate the change of an image src?

   • jQuery doesn't provide a direct way to animate the change of an image src, however, it provides a way to animate the change of css properties of an element, this is done by using .animate() function. For instance, if we want to change the width of an image from 100px to 200px, we can use the following code: $("#myImage").animate({width: "200px"}, 2000); this will change the width of the image to 200px in 2 seconds (2000ms).

Tag

jQuery