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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. It is used almost every time you want to read or edit an HTML element.
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function changeimage() { var image = document.getElementById('imagem'); if (image.src.match("img")) { for(i = 1; i <= 3; i++) { image.src = "img/image2"+i+".png"; } } else { image.src = "img/image1.png"; } }
The getElementById() method returns the element that has the ID attribute with the specified value. This method is one of the most common methods in the HTML DOM, and is used almost every time you want to manipulate, or get info from, an element on your document.
function myFunction() { var x = document.getElementById("myDIV"); if (x.style.display === "none") { x.style.display = "block"; } else { x.style.display = "none"; }}
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.
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. Use style.border instead. Not supported in HTML5.
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.
