JavaScript (JS) id Example: HTML DOM Objects – Base Object – JavaScript (JS) id Example
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JavaScript (JS) id Example: HTML DOM Objects – Base Object – JavaScript (JS) id Example
Purpose: – Illustrates the JavaScript syntax for the Base Object id Property .
Prerequistes:
- Install Visual Web Developer 2008
Syntax: BaseObject.id="id" – Allows you to access the id for an BaseObject.
Restrictions: None
Notes:
- You can build your own library of syntax examples by using same web site over and over and just add new files to it.
Instructions:
- Use Visual Web Developer 2008
- Create new web site;
- Click File/New Web Site
- Select ASP.NET Website Template
- Select C-Sharp for language
- name of Web Site could be JavaScript_Syntax.
- Add New folder named "HTMLDOMObjects"
- Right-click project name in solution explorer;
- add new folder;
- name of folder should be: HTMLDOMObjects
- Add New subfolder to "HTMLDOMObjects" folder named "DOMBase"
- Right-click folder named "HTMLDOMObjects" in solution explorer;
- add new folder;
- name of folder should be: DOMBase
- Add New subfolder to "DOMBase" subfolder named "BaseObjectProperties"
- Right-click subfolder named "DOMBase" in solution explorer;
- add new folder;
- name of folder should be: BaseObjectProperties
- Add HTML Page Named id to BaseObjectProperties subfolder
- Right-click BaseObjectProperties subfolder;
- add new item;
- Select HTML Page
- HTML Page name should be id
- Click on copy code in code below to copy code into HTML Page id.htm
- Right-click on HTML page id.htm and select view in browser
| HTML | | copy code | | ? |
< !DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> |
<html> |
<head> |
<title>IdealProgrammer.com: id </title> |
<!-- |
*************************************************** |
* This example is from http://idealprogrammer.com * |
*************************************************** |
--> |
<base id="myBaseID" href="http://myqol.com" /> |
</head> |
<body> |
<a href="events_calendar.aspx" id="idEvents">Events</a><br /><br /> |
<a href="news_list.aspx" id="idNews">News</a><br /><br /> |
<a href="presenters.aspx" id="idPresenters">Presenters</a><br /><br /> |
<a href="free_trial.aspx" id="idFreeTrial">Free Trial</a><br /><br /> |
<script type="text/javascript"> |
//***************************************************** |
// DOM Objects |
//***************************************************** |
//***************************************************** |
// *** Base Object Properties *** |
//***************************************************** |
//***************************************************** |
// id |
//***************************************************** |
// SYNTAX: |
// object.id=id Allows you to retrieve or assign |
// id to Base object |
// Two ways to retrieve id |
// 1. GetElementsByTagName |
myObject=document.getElementsByTagName('base')[0]; |
document.write("Base - Using getElementsByTagName : " + myObject.id); |
document.write("<br />"); |
// 2. GetElementById |
document.write("Base - Using getElementById: "); |
document.write(document.getElementById('myBaseID').id); |
document.write("<br /><br />"); |
// Two ways to assign id |
// 1. GetElementById |
myThirdElement = document.getElementById('myBaseID'); |
myThirdElement.id = "newbaseid"; |
document.write("<br />IdealProgrammer id changed to newbaseid: ", myThirdElement.id); |
// 2. GetElementsByTagName |
myFourthElement = document.getElementsByTagName('base')[0]; |
myFourthElement.id = "newbaseid2"; |
document.write("<br />ProgressMonitor id changed to newbaseid2: ", myFourthElement.id) |
</script> |
</body> |
</html> |
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