Embedding Flash
"In July 2017, Adobe announced that it would declare Flash to be end-of-life in 2020, and will cease support, distribution, and security updates to Flash Player."
Embedding is the process of including media from other sources into your web sites.
"other documents" can include:
"embedding" is sometimes also called "including" or "transcluding"
Sometimes you can use JavaScript to interact with the embedded file or app as if it were another User Interface element on your page!
For instance, you could programmatically pause and play an embedded audio clip, say, playing "hoorah!" when the user wins a game of Tic-Tac-Toe.
Or, if the user moves their location on an embedded Google Map, your app could be notified and find the city name and look up restaurants in that area on Yelp's API.
This lesson focuses on static embedding: displaying media and allowing the user to interact with it directly. The Interactive Embedding lesson focuses on interactive embedding: using JavaScript to pass messages between your page's scripts and the embedded media.
<img src=''> is the original embed
There are many different types of images: * svg * png * ptg * psd * jpg * and the list goes on...
Let's focus on a few of the common types of images you'll find around the web; JPGs (or JPEGs), PNGs, and SVGs.
Note: JPGs and JPEGs are the same type of image, however when embedding them in your page you will need to make sure you are using the correct file extension otherwise your site won't be able to locate the image. Also case matters!
Note: While PNGs can appear to be irregular in shape they are not, transparent sections will still block users from interacting with any content behind them
SVG stands for standard vector graphic
Let's go to our trusty "example-html" directory, and add some images to make your page more engaging!
add in one image from an external source per section on your index.html document
Choose an image from your computer to include on your About page
Create a subdirectory named "images" (or 'imgs', or 'pictures', or whatever name makes sense to you)
Place a copy of your chosen image into the newly created subdirectory.
Embed that image into your About page.
Bonus Challenge: What happens when you wrap an image in an anchor tag?
<iframe> means "inline frame"
<iframe id="inlineFrameExample"
title="Inline Frame Example"
width="300"
height="200"
src="https://www.openstreetmap.org/export/embed.html?bbox=-0.004017949104309083%2C51.47612752641776%2C0.00030577182769775396%2C51.478569861898606&layer=mapnik">
</iframe>
Beware the "same origin policy":
Refused to display 'http://www.burlingtoncodeacademy.com/' in a frame because it set 'X-Frame-Options' to 'sameorigin'.
Beware giving foreign JavaScript access to your page contents and user-input data
sandbox attribute limits what the loaded page can doYou can use iframes to load the same HTML onto several pages on your site.
This is often used for login boxes.
Warning: iframes can take longer to load than the rest of the page, and can eat up CPU and RAM, so don't overuse them
iFrames are often used to embed videos from dedicated hosts such as Vimeo or YouTube
Let's add a video to our site! Open up YouTube, and find a short video, and a long video. Leave them open in different tabs.
index.html file
"In July 2017, Adobe announced that it would declare Flash to be end-of-life in 2020, and will cease support, distribution, and security updates to Flash Player."
Flash used to be the way to create web animations, but now we have better options
<canvas> elements using JavaScriptHTML5 defines a standard <video> tag
Use the <video> tag when you are hosting your own video media file (on your web server or a CDN)
video hosting sites like YouTube, and Vimeo have their own rules and sample code which you should find and copy into your HTML file
Tip: you can automatically start playing the video when the page loads; to be polite you should also mute the volume, like this:
<video muted=true autoplay=true src='/videos/yelling-man.mp4'>
HTML5 also has a prebuilt <audio> tag that you can use to embed your local audio files into your web pages. There are several key attributes for audio elements.
src Like with all other forms of media the src attribut tells your tag where the actual audio file livesautoplay Accepts a boolean value, when set to true it will begin playback as soon as it cancontrols Adding this attribute with no value will display playback controls to the userloop Another boolean attribute that repeats the audio indefinitely when set to true
muted Yet another boolean attribute. It mutes your audio when set to true
Playing sounds directly from JavaScript is pretty easy:
let audio = new Audio('audio_file.mp3');
audio.play();
<iframe id="inlineFrameExample"
title="Inline Frame Example"
width="300"
height="200"
src="https://www.openstreetmap.org/export/embed.html?bbox=-73.2130900,44.4749000,-73.2102500,44.4772200&layer=mapnik">
</iframe>
OpenStreetMaps defines a "bounding box" as a four-tuple: min Longitude, min Latitude, max Longitude, max Latitude.
You can find the bounding box for a given map on https://www.openstreetmap.org/ by clicking the Export button.
It is possible to use JavaScript to interact with an embedded map. See the client-side coding lesson on embedding
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