What is getElementsByTagName?


What is getElementsByTagName?

getElementsByTagName() method returns a live HTMLCollection of elements with the given tag name. All descendants of the specified element are searched, but not the element itself. The returned list is live, which means it updates itself with the DOM tree automatically. Therefore, there is no need to call Element.

What is the syntax of getElementsByTagName ()?

The getElementsByTagName() method in HTML returns the collection of all the elements in the document with the given tag name. To extract any info just iterate through all the elements using the length property. Syntax: var elements = document.

What is getElementsByTagName return?

getElementsByTagName() The getElementsByTagName method of Document interface returns an HTMLCollection of elements with the given tag name. The complete document is searched, including the root node.

What is the difference between GetElementByID and GetElementsByTagName?

The difference is that GetElementByID() will retrieve a single element object based on the unique id specified, whereas GetElementsByTagName() will retrieve an array of all element objects with the specified tag name. Then you can obtain the value using GetElementById from your C++ code.

What is HTML collection?

An HTMLCollection is a list of nodes. An individual node may be accessed by either ordinal index or the node’s name or id attributes. Note: Collections in the HTML DOM are assumed to be live meaning that they are automatically updated when the underlying document is changed.

What is the difference between getElementById and getElementsByTagName?

What is the difference between document getElementById?

Definition and Usage 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.

How do I remove a collection from HTML?

A native HTMLCollection is not an array, it doesn’t have a splice method, and elements can’t be removed or added unless you actually remove or add them to the DOM. You probably want to convert it to an array. Convert the collection to an array if you want to use Array methods, such as splice () ; use array.

How do you access a collection array in HTML?

An HTMLCollection is an array-like collection (list) of HTML elements. The elements in a collection can be accessed by index (starts at 0). The length Property returns the number of elements in the collection.

What is tag name HTML?

tagName. The tagName read-only property of the Element interface returns the tag name of the element on which it’s called. For example, if the element is an , its tagName property is “IMG” (for HTML documents; it may be cased differently for XML/XHTML documents).