(images are inline elements. This means that they flow within the surrounding text.)
You can control the size of an
image using the width and height properties in CSS.
In order to center an image, it should be turned into a blocklevel element using the display property.
place an image behind any HTML element. This could be the entire page or just part of the page.
1-background-repeat have 3 values :
repeat-x
repeat-y
no-repeat
background-attachment
fixed The background image stays in the same position on the page.
scroll The background image moves up and down as the user scrolls up and down the page.
background-position
use it when the background is not being repeated to controll where do you want the image to be placed
When a single image is used for several different parts of an interface, it is known as a sprite.
a link or button that changes to a second style when a user moves their mouse over it
you shoul lower the consttrat of your image if you want to add text to it and make the text clear
pause the execution of a script on any line using breakpoints. Then you can check the values stored in variables at that point in time.
very important in debugging
you can set multiple breakpoints
BREAKPOINTS You can indicate that a breakpoint should be triggered only if a condition that you specify is met.
use try, catch, and finally
1-TRY specify the code that you t hink might throw an exception within the try block.
2-CATCH If the try code block throws an exception, catch steps in with an alternative set of code.
3-FI NALLY The contents of the fi na 11 y code block will run either way - whether the try block succeeded or failed.
add your own errors if you know the code will cuase errors
throw new Error( 1message 1) ;
1-ANOTHER BROWSER
2-ADD NUMBERS
3-STRIP IT BACK
4-EXPLAINING THE CODE
5-SEARCH (Stack Overflow)
6-VALIDATION TOOLS (jquery)
1- case sensetive 2- variable scope 3-reserved words 4- extra characters 5-data types issues
The <video> and <audio> elements allow us to embed video and audio into web pages :
<video controls>
<source src="rabbit320.mp4" type="video/mp4">
<source src="rabbit320.webm" type="video/webm">
<p>Your browser doesn't support HTML5 video. Here is a <a href="rabbit320.mp4">link to the video</a> instead.</p>
</video>
controls which enables the default set of playback controls. If you don’t specify this, you get no playback controls
<video> element contains two <source> elements so that different formats can be loaded depending on the browser viewing the site.
## The HTMLMediaElement API API provides features to allow you to control video and audio players programmatically.
you can style them using css and add functionality using java script just like any other html element