Prework Study Guide

HTML

The head element contains information about the webpage.
The body element represents the visible content shown to the user.
The img elements contains information about any images that are displayed on a webpage.
The br element creates a break or an empty space between two blocks of content.

"style" element attributes to the color of a single heading.
"link" element is used when you have an external CSS style sheet.
There are three ways to style a webpage using CSS: Inline, Internal, and External CSS sheet style.
Declarations contain two important components: the CSS property we want to apply and the value of the property.
A margin indicates how much space we want around the outside of an element.
A padding property adds space around th econtent inside an element.
To apply a rule to all the elements on a page, you use a wild symbol. Such as *.
Practice the DRY (do not repeat) code by combining selectors with commas.
The text.align element is used as a positioning property as a way to center a title.

git Status: Check what branch we are currently working on.
git checkout -b branch name: creates a new branch and switches to it.
git revert: used to go back to the desired code to fix any bugs or make changes.
git add -A: to command git to stage all the files. Files are staged after making changes.
git commit -m "description": Helps keep track of what was done in the commit.
git pull origin main: lets you know if the branch is up to date.
git push origin "name for branch": pushes changes done in local environment to the main branch.

The "script" element links the JavaScript file to the HTML file, just like the "link" element in CSS.
A variable (var) is a container that store values. You start by using the "let" element followed by "myVariable".
Variables are case sensitive. You can also creat and add a name to the variable in the same line.
Comments are just snipets of text that don't trigger a responser from the browser. Use wild symbols, such as *, the block in text that will only by for human readers.
Strict equality (===) runs tests to see if two values are equal. (I.e. letmyVariable =3; myVariable=4;) The results come back in the form of a ture/false statement.
A function is a way of packing functionality that you wish to reuse.
Use the console.log method to output a message to the web console by adding an argument. Console refers to a test environment and log() refers to a set of instructions that can be exectuted by the computer.