Stack #2807592
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| show | The "User Interface" or UI of an app refers to how a person (user) interacts with the computer or app.
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| UI Elements | show 🗑
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| UI Events | show 🗑
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| Event-driven program | show 🗑
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| show | an overarching term for the coding tasks involved in making your app respond to events by triggering functions.
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| show | a command (onEvent in App Lab) that can be set up to trigger a function when a particular type of event occurs on a particular UI element.
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| Callback function | show 🗑
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| Debugging | show 🗑
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| show | In JavaScript (and most programming languages) the most primitive type of memory you can use is called a variable. It's called a variable because it's a piece of memory in which you can change what's stored - its value can vary.
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| show | Any valid unit of code that resolves to a single value. (Variables can be assigned values that are the result of an expression.)
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| Data Type | show 🗑
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| Variable Scope | show 🗑
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| show | Any sequence of characters between quotation marks (ex: "hello", "42", "this is a string!").
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| Concatenate | show 🗑
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| show | The common programming structure that implements "conditional statements".
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| Conditionals | show 🗑
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| Selection | show 🗑
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| show | A single value of either TRUE or FALSE
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| show | in programming, an expression that evaluates to True or False.
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| while loop | show 🗑
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| Models and Simulations | show 🗑
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| List | show 🗑
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| show | A data structure in JavaScript used to represent a list.
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| show | an event triggered by pressing or releasing a key on the keyboard.
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| keyup | show 🗑
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| show | event type triggered when key is pressed down on the keyboard
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| event.key | show 🗑
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| show | A typical looping construct designed to make it easy to repeat a section of code using a counter variable. The for loop combines the creation of a variable, a boolean looping condition, and an update to the variable in one statement.
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| return | show 🗑
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| Canvas | show 🗑
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
chris10byrd