JavaScript Create a non-predictive T9-like keypad. For those who do not know what a T9 keypad is, it is essentially a more compact keyboard for mobile phones that requires you to perform multi-presses to choose letters you want to spell your words with (technology that may be older than some of students). If you are unfamiliar with the user interface, use the following shell in an html file to get a sense of what it looked like on older mobile phones: // html T9 Keypad abc def ghi jkl mno pqrs tuv wxyz How it functions for the assignment: If a button contains a letter you want to type, click on the button N number of times associated to the order the letters are in. So if you wanted "c", you push the second button 3 times. If you push the button more than the number of letters in the button, it will wrap-around and return the letter after. For example, clicking the first button (that has letters a, b, and c) 5 times returns "b". The input field only appends the letter to once you've completed a # of key presses followed by a > 500 ms delay. Recommendations/Hints: Apply event listeners to buttons to be able to trigger interactions html: abc js: var buttons = document.querySelectorAll("button"); ... buttons.forEach(function(b) { ... b.addEventListener("click", function(event) { ... } } Use the built-in Math object

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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T9 Keypad

abc def
ghi jkl mno
pqrs tuv wxyz How it functions for the assignment: If a button contains a letter you want to type, click on the button N number of times associated to the order the letters are in. So if you wanted "c", you push the second button 3 times. If you push the button more than the number of letters in the button, it will wrap-around and return the letter after. For example, clicking the first button (that has letters a, b, and c) 5 times returns "b". The input field only appends the letter to once you've completed a # of key presses followed by a > 500 ms delay. Recommendations/Hints: Apply event listeners to buttons to be able to trigger interactions html: abc js: var buttons = document.querySelectorAll("button"); ... buttons.forEach(function(b) { ... b.addEventListener("click", function(event) { ... } } Use the built-in Math object

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