Using Document Object Model (DOM): Modify “src” attribute in the following HTML code, photo1.jpg to photo2.jpg: Modify the content of the following HTML code, Hello SEU to Hello KSA: Hello SEU   **Please make the code compatible with university content**

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Using Document Object Model (DOM):

  1. Modify “src” attribute in the following HTML code, photo1.jpg to photo2.jpg:

<img src="photo1.jpg" alt="photo" id="img"/>

  1. Modify the content of the following HTML code, Hello SEU to Hello KSA:

<h1 id ="h">Hello SEU</h1>

 

**Please make the code compatible with university content**

Traversing and Modifying a DOM Tree
• Accessing DOM nodes
> The document object in the DOM identifies the page itself.
> The document object comes with a number of standard properties and methods for
accessing collections of elements in document.
> Document object methods for accessing nodes in the document:
1. By element name (getElementsByTagName ())
· Returns every paragraph on the page, wrapped in something called a collection
or nodeList
See slide note example
var paragraphs = document.getElementsByTagName ("p");|
2. By id attribute value (getElementById ())
· To access this image:
<img src="photo.jpg" alt="" id="lead-photo">
- We can do:
var photo = document.getElementById("lead-photo");
3. By class attribute value:
var x =
document.getElementsByClassName ("example");
Transcribed Image Text:Traversing and Modifying a DOM Tree • Accessing DOM nodes > The document object in the DOM identifies the page itself. > The document object comes with a number of standard properties and methods for accessing collections of elements in document. > Document object methods for accessing nodes in the document: 1. By element name (getElementsByTagName ()) · Returns every paragraph on the page, wrapped in something called a collection or nodeList See slide note example var paragraphs = document.getElementsByTagName ("p");| 2. By id attribute value (getElementById ()) · To access this image: <img src="photo.jpg" alt="" id="lead-photo"> - We can do: var photo = document.getElementById("lead-photo"); 3. By class attribute value: var x = document.getElementsByClassName ("example");
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