Javascript Set Img Src

So, you want to know how to set the image source using JavaScript? No problem! It’s a handy skill to have in your coding toolkit, especially when working on web development projects. In this article, we'll walk you through the steps to dynamically change the image displayed on a webpage by setting the image source attribute in JavaScript.

First off, let’s understand the basic structure of an HTML image tag. An image tag looks like this: ``. The `src` attribute contains the path to the image file that you want to display, while the `alt` attribute provides alternative text for screen readers and in case the image fails to load.

To change the image source attribute using JavaScript, you need to target the image element on the page. You can do this by accessing the image element using its id, class, or any other selector method your project utilizes. Once you have a reference to the image element, you can then update its `src` attribute with the new image path.

Here’s a simple example to demonstrate how you can set the image source using JavaScript:

<title>Set Image Source with JavaScript</title>


  <img id="myImage" src="original_image.jpg" alt="Original Image">
  
  <button>Change Image</button>

  
    function changeImage() {
      var imgElement = document.getElementById("myImage");
      imgElement.src = "new_image.jpg";
      imgElement.alt = "New Image Description";
    }

In this code snippet, we have an image tag with an id of `myImage` that initially displays `original_image.jpg`. Below the image, there is a button that triggers the `changeImage` function when clicked. Inside the function, we grab the image element by its id and update its `src` attribute to `new_image.jpg` and the `alt` attribute to `New Image Description`. Once the button is clicked, the image on the webpage will be instantly swapped with the new image.

Remember, you can dynamically change the image source based on various conditions in your project, such as user interactions, form submissions, or any other event triggers you want to implement. JavaScript provides the flexibility to make real-time updates to your webpage content without needing to refresh the entire page.

That’s it! You’ve now learned how to set the image source using JavaScript. Feel free to experiment with different scenarios and make your web pages more dynamic and interactive with this handy technique. Happy coding!