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To do this, we need to fetch an additional JavaScript file from PDF.js GitHub's repo. Go ahead and download the text_layer_builder.js plugin. We also need to fetch its corresponding CSS file The Document Object Model ( DOM) connects web pages to scripts or programming languages by representing the structure of a document—such as the HTML representing a web page—in memory. Usually it refers to JavaScript, even though modeling HTML, SVG, or XML documents as objects are not part of the core JavaScript language. 16 2FAQ:bookandsupplementarymaterial - Startreadingwith§6"UsingJavaScript:thebigpicture". - Skipallchaptersandsectionsmarkedas"advanced", andallquickrefer- Section 1. Getting started Understanding the Document Object Model in JavaScript Section 2. Selecting elements getElementById () - select an element by id. getElementsByName () - select elements by name. getElementsByTagName () - select elements by a tag name. getElementsByClassName () - select elements by one or more class names. Document object − Each HTML document that gets loaded into a window becomes a document object. The document contains the contents of the page. Form object − Everything enclosed in the

tags sets the form object. Form control elements − The form object contains all the elements defined for that object such as text fields, buttons, radio buttons, and checkboxes. Here is a simple hierarchy of a few important objects − The Browser Object Model (BOM) There are no official standards for the Browser Object Model (BOM). Since modern browsers have implemented (almost) the same methods and properties for JavaScript interactivity, it is often referred to, as methods and properties of the BOM. The Window Object The window object is supported by all browsers. The BOM (Browser Object Model) contains objects that represent the current browser window and components; objects that model things like history, device's screen, etc The topmost object in BOM is the window object, which represents the current browser window or tab. Document: represents current web page. Window Object. Open a new window when clicking on a button Open a new window and control its appearance Blur and Focus a new window Close the new window Checks whether the new window has been closed or not Write some text to the source (parent) window Move the new window relative to its current position Move the new window to the specified Browser Object Method . B . Browser Object Model . C. Browser Oriented Method . D. Browser Oriented Model . 24 . What is the full form of TOC? A. Text of content . B . javascript code? A. Browser . B. Notepad++ . C. Sublime Text . D . Visual studio code . 3. Which one enables the hosting providers to • JavaScript can dynamically modify an HTML page • JavaScript can react to user input • JavaScript can validate user input • JavaScript can be used to create cookies (yum!) • JavaScript is a full-featured programming language • JavaScript user interaction does not require any communication with the server A Document object represents the HTML document that is displayed in that window. The Document object has various properties that refer to other objects which allow access to and modification of document content. The way a document content is accessed and modified is called the Document Object Model, or DOM. The Objects are organized in a hierarchy. A Document object represents the HTML documen