> The Document method getElementById () returns an Element object representing the element whose id property matches the specified string. Since element IDs are required to be unique if specified, ...

Browsers know how to convert the tags of the HTML into a tree with the help of DOM. Here is all you need to know about Document Object Model.

When JavaScript accesses an HTML document, it treats the elements of the document as objects that have both attributes (data or properties) and methods (operations or functions). Objects can respond ...