Skip to main content

Taking on the DOM !!!


IT'S TIME TO LEARN THE DOM 😆

Today I am tackling the DOM so the FIRST thing I did was to put on my StarWars shirt!  I am definitely going to need the Force to be with me as I learn how to access and manipulate XML and HTML in the DOM.

First thing first----> What is the DOM?

DOM stands for Document Object Model.  It is the browser's representation of the page in memory.  The browser creates the DOM to allow us to modify and change XML, HTML, and CSS.  If you change the DOM, you change the page (using JavaScript).

WHY would we want to work in the DOM?

It is a useful tool for developers because it allows  a website to be manipulated in a live environment.  Once changes made are acceptable and approved, that code that was implemented in the DOM can then be copied over to the actual XML/HTML index file.  It can then be saved and implemented so that the website will have the current changes for all end users.

How do we access the DOM and how does it work?

Whenever a webpage is loaded, the browser automatically creates the DOM for that page.  To access the DOM, you can right click on the page you are viewing.  Select "Inspect", then select "Console".  Type "document."  then press return.  Now you will see the DOM.


In the picture above, I went into the DOM on Yahoo's webpage.  Notice that I typed "document." above right.

I am using a Mac, so to access the DOM above, I used the short cut 'Option Command J' instead of right clicking, Inspect, etc.


Look for my next post where I talk about DOM selectors.
Follow me as I learn to build my website bit by bit!    IronTreeDev.com








Comments

Post a Comment

Popular posts from this blog

XPATH and XPATH Expressions In XMLLINT

XPATH And XPATH Expressions Earlier, I told you about xmllint and xmllint for html files .  Let's say you just want to parse the <span> tags within your html file or just your <span lang="el"> tags? Enter:  Xpath. Xpath is yet another option available within the xmllint language. Remember, an Xpath is used to navigate through elements and attributes in xml and html documents.  Xpath uses Xpath Expressions to select nodes or node sets within a document. Example 1 .  Looking for all of the <span> tags within an html document. xmllint -- html -- xpath " // span" StedmanLesson10.html xmllint = This tells the command line that we are going to be using the xmllint language. space = because we always have space in between commands -- = Remember, these are the two hyphen-minus characters that we need to tell the command line that we are going to use an xmllint option. html = This is the xmllint option we want to ...
Post a Comment
Read more

Back To The Basics

It's Been A LOOONG Minute since I have coded!!   Even so, I decided to give JavaScript another try.  I always seem to do good and then when I get to this one area, I always seem to hit a brick wall.  Well....nothing like getting back up and trying again right?   I decided to try:  The Complete JavaScript Course 2025: From Zero to Expert! by Jonas Schmedtmann.   So far, he seems to explain things in a way my brain understands it.  💁 To let you know how much I have forgotten in the coding world, I couldn't even remember how to write the basic commands for an HTML document! Yesterday I started the fundamentals free course and I am so glad that I did.  Because of time, I only made it through the JavaScript History and Setup chapter, but that chapter was enough to get my memory flowing again!   It started to feel familiar and I quickly remembered why I enjoyed coding so much.  Yesterday and this morning, I just erased and...
Post a Comment
Read more

XMLLINT for HTML: Cleaning up the HTML Code

Getting That MESS Cleaned Up! In an earlier post, we learned about xmllint .  Today, I want to talk about cleaning up the code for an HTML file. When we have an xml file, xmllint is used.  For an html file, we use the following command in the command line: xmllint --html <filename goes here>         Here is an actual command on my command line for running xmllint for my StedmanLesson10.html file. In the photo above, you see that I start off the command with xmllint. The next thing is a space and then a --html.  The two -- are two hyphen-minus characters that are used to specify long options (Basically there are options that can be used within xmllint.  The two hyphen-minus characters are saying an option is going to be used.  In this case, that option will be html - because we are going to do an xmllint on an html file). After that you see a space and then the name of the html file I want t...
Post a Comment
Read more