Feb 4, 2013 · I have a javascript code that points to an image using getElementById. But when I debug it in firebug, it says that my variable has a value of "null". Here is my code: var image = …

Mar 5, 2024 · Use the getAttribute() method to check if an image src is empty. If the src attribute doesn't exist, the method returns either null or an empty string, depending on the browser's …

The Image object represents an HTML <img> element. You can access an <img> element by using getElementById (): Tip: You can also access an <img> element by using the images …

Jun 5, 2024 · In JavaScript, both undefined and null represent the absence of a meaningful value, but they have different purposes and are used in distinct contexts. Knowing when and how to …

Apr 10, 2025 · Learn about the Image() constructor, including its syntax, code examples, specifications, and browser compatibility.

Feb 25, 2023 · const imgElement = document.querySelector('img'); const imgSrc = imgElement.getAttribute('src'); if (!imgSrc || imgSrc.trim() === '') { console.log('Image src is …

Jun 20, 2020 · The logic of the if statement inside the function goes as follows: if the src attribute is empty, set the image.src path to a default image. If the src attribute is not empty we don't …

For an image created using the Image constructor, the value of this property is null. lowsrc. Syntax: Image.lowsrc. The lowsrc property specifies the URL of a low-resolution version of an …

To clear an image src attribute, use the `setAttribute()` method to set the image's `src` attribute to an empty string.

Apr 27, 2025 · The null value represents the intentional absence of any object value. It is one of JavaScript's primitive values and is treated as falsy for boolean operations. The value null is …