I accidentally deleted a student’s website when I was trying to help them. How can we recover their work?
a unit over CS Discoveries 1 539 April 18, 2018 Students getting rid of index.html
Use this as a space to record your feedback and questions about this lesson.
This link to answer most questions is: http://lecture.eingang.org/index.html.
Increasing or decreasing numbers is a common and incredibly useful pattern in programming. This „Counter Pattern“ can be used to make an image fly across the screen, to count down a timer, or to keep track of clicks. Used with a variable x to count up by one, the Counter Pattern can look like this:
By default each of the analog sensors on the Circuit Playground converts their sensed data to a 10 bit number with a minimum value of 0 and a maximum of 1023. While this range provides the most detailed readings (since there are 1024 possible values), it’s not always the most useful range of numbers. If you want to use a sensor input to control rgb color, display a percentage, or otherwise want to constrain the potential values of the sensor inputs you’ll need to map the range of 0-1023 to another range.
Sometimes you only want to style some specific elements of a type instead of all elements of one type. Classes allow for a group of elements to have their own unique style. This applies to elements on the same page or on separate pages, as long as all the pages link to the same style sheet.
There are many properties that help set the styles of your web pages.
You’ve seen how to create an app with multiple screens by yourself, but what about working with others to collaborate on an app? Fortunately App Lab allows you to import screens from another app! From the same dropdown where you can add a screen, just select „Import Screen“ and follow the instructions (you’ll need the sharing code from the app you’re importing screens from).
The element is a special element that wraps all of the visible content on a web page. Because everything that you see is inside this tag, any rule-set that you create for the body element will apply to every element on page, unless the element itself has a rule that contradicts it. This is useful for establishing a baseline style for everything on your page.
The velocity blocks (velocityX and velocityY), tell sprites how fast to move in a particular direction, just as the counter pattern did before. By hiding the counter pattern code inside a block, you can build even more complex programs.
