Answered: Provide two real-world examples of how…

Provide two real-world examples of how to utilize menus in an application and why you prefer a menu over enabling the user to enter text.

Systems Architecture

7th Edition

ISBN:9781305080195

Author:Stephen D. Burd

Publisher:Stephen D. Burd

Chapter7: Input/output Technology

Section: Chapter Questions

Problem 26VE

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Create a graphical user interface program for solving the quadratic equation ax2 + bx + c = 0. The user will enter values for a, b, and c into text fields and press a “Solve” button. The program will then display a list of the roots in a text field. Your interface should look similar to the above. Use a BorderPane as the parent node of the scene. Use an HBox to hold the four labels and four text fields and another HBox to hold the “Solve” button. The unicode for a superscripted 2 is “\u00B2”. When the user clicks the “Solve” button the program should use Double.parseDouble to parse the a, b, and c text fields. If any of these calls to parseDouble cause an exception then catch the exception and change that text field’s text to “0” (by performing setText("0") on that text field). Do not change the values in the other text fields. Your program should correctly deal with cases where a, b, and/or c are 0 -- For instance, if all three fields are 0 then the roots are all x. If a and b are 0…
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these are the requirements for my selectors & event handlers in jquery- to show they are functioning a picture will show up, ive been able to do them all other then doOnChange- cant figure out how to get a new photo for each menu option <p>Please select a direction:<br/><select id="mydirection" name="direction"><option value="N">North</option><option value="S">South</option><option value="E">East</option><option value="W">West</option></select> I keep getting the same image for all 4 options when i have different images per option!
Write a complete interactive program that displays the alphabet on the canvas. • Each time the user presses a letter key, the matching letter should get a little big bigger. • When the user presses the ENTER or RETURN keys (you can use Processing's RETURN and ENTER values to detect this), the letters should be reset to their initial size Make sure your program doesn't crash if a non-letter key, like a number or punctuation, is pressed. Hint: You might be tempted to do this "the long way", with 26 different variables and 26 if/elif statements under your keyPressed( function. Don't do that. Use a dictionary to store the count/size of each letter. If you do this nicely, your code will be short. Our solution is only 29 lines (including blank lines and function headers!). Example 1: Initial state abcdef kImno p qrstu v w xy z Example 2 - After pressing the 'c. 'o' and 'k' keys a few times -b Cdefg hijkimn O, stu
Write a complete interactive program that displays the alphabet on the canvas. • Each time the user presses a letter key, the matching letter should get a little big bigger. • When the user presses the ENTER or RETURN keys (you can use Processing's RETURN and ENTER values to detect this), the letters should be reset to their initial size Make sure your program doesn't crash if a non-letter key, like a number or punctuation, is pressed. Hint: You might be tempted to do this "the long way", with 26 different variables and 26 if/elif statements under your keyPressed() function. Don't do that. Use a dictionary to store the count/size of each letter. If you do this nicely, your code will be short. Our solution is only 29 lines (including blank lines and function headers!). Example 1: Initial state alphabet abcde f ghij kImno pqrstuv w xyz Example 2 - After pressing the 'c' 'o' and 'k' keys a few times ab Cdefghijkim n Op qrst uv W XyZ
In javaScript, What is the difference between the setTimeout() and setInterval() methods. Which method is most often used for starting an animation code that executes repeatedly?
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Create a simple interface, similar to the example of the shopping list in the lecture, that provides a textbox to enter a number—any number, decimal or whole. When the user is finished entering a number, she clicks the Add button to add the number to a styled table. When she is finished adding numbers, she clicks a STATs button to report maximum, minimum and average values of all the numbers in the table. A CLEAR button erases all numbers and starts with a clean and empty (except for headers!) table. In JavaScript
Please Help with Java Script eventListeners 1. Add an event listener to the button with an id of "button1". Listen for the click event. The button should change the text content of the paragraph with an id of "p1" to:"Hello World! I'm listening to events." This did NOT work://const button1 = document.querySelector("button1");//const p1 = document.querySelector("p1");//const click = () => {// alert("Hello World! I'm Listening to events.");//} //button1.addEventListener("click", p1, false); This did NOT workconst button1 = document.querySelector("button1");const p1 = button1.querySelector("p1");button1.addEventListener("click", function (event) {event.p1.target.textContent = "Hello World! I'm Listing to events.";}); 2) Add an event listener to the button with an idof "button2". Listen for the click event. Thebutton should change the text content of theparagraph with an id of "p2" to:"This button toggles text content."If the button is clicked a 2nd time,the text content should change…
I'm working on an assignment and i'm trying to create a to-do list in AndroidStudio. I've created the listview, edit text, switch and button, but I've hit a snag with the following: Create a new Java object to hold each todo item, it should contain a string with the text of the todo, and a boolean for if it is urgent or not. Create a List to hold all your items, and for the adapter to use for displaying them. When you click “Add”, you should create a new todo item and add it to the list, clear out the text in the EditText, and call “notifyDatasetChanged()” on your adapter so it refreshes. Implement a BaseAdapter to power the ListView. In AndroidStudio, type ctrl + O (the letter ‘O’, not number zero). From the list of inherited functions, implement these ones: int getCount() - This returns the number of rows that will be in your listView. In your case, it should be the number of strings in the array list object ( return list.size() ). Object getItem(int position) – This…
the heart of JavaScript and jQuery is interactive web pages. When we talk about interaction what we’re referring to is some reaction or event caused by something the user did. For instance, the user clicks on something or hovers over an area and this causes a trigger of some event that then allows the user to interact further. What are the most common event handlers? There are a lot, so it may be helpful to look at their categories (i.e. mouse, document, keyboard).