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If you will always have the pattern on _b instead of _t you can make it more generic by passing reference to the image itself: onclick='changeImage(this);' Then in the function: function changeImage(img) { document.getElementById("img").src = img.src.replace("_t", "_b"); }
The getElementById() method returns an element with a specified value. The getElementById() method returns null if the element does not exist. The getElementById() method is one of the most common methods in the HTML DOM.
In order to access the form element, we can use the method getElementById() like this: var name_element = document .getElementById( 'txt_name' ); The getElementById() call returns the input element object with ID ’txt_name’ .
16 Οκτ 2024 · The getElementById() method of the Document interface returns an Element object representing the element whose id property matches the specified string. Since element IDs are required to be unique if specified, they're a useful way to get access to a specific element quickly.
The document.getElementById() returns a DOM element specified by an id or null if no matching element is found. If multiple elements have the same id , even though it is invalid, the getElementById() returns the first element it encounters.
Since the id is supposed to be unique, using the getElementById() method is a fast way to select an element. If the element does not have an ID, you can use the querySelector() to find the element using any CSS selector. See the following example: JavaScript. const element = document.getElementById('message'); element.style.color = newColor;
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 collection. You can create an <img> element by using the document.createElement () method: Not supported in HTML5. Use style.cssFloat instead. Not supported in HTML5.
