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Imported from Glitch
Feb 5, 2021
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Merge pull request #1 from lfleming-314/glitch
lfleming-314 Feb 5, 2021
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105 changes: 18 additions & 87 deletions README.md
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Assignment 2 - Short Stack: Basic Two-tier Web Application using HTML/CSS/JS and Node.js
===
## Readme

Due: September 16th, by 11:59 PM.
## Title: **Shopping List & Calculator**

This assignment aims to introduce you to the concepts and practice involved in creating a prototype (i.e. not deployment ready) two-tiered web application. The baseline aims of this assignment involve creating an application that demonstrates the use of several specific pieces of HTML, CSS, JavaScript, and Node.js functionality.
https://a2-lfleming-314.glitch.me/

Baseline Requirements
---
## Description
This project allows the user to make a shopping list and see the total price of their items.
## Instructions
- To add an item, type in the item's name, unit price (price per item, per pound, etc.), and quantity into the input fields. Then click the `Add` button. The item will then appear in the table.
- To edit an item in the list table, click the `Edit` button next to it. The item's name, unit price, and quantity will be copied to the input fields. Change those as desired and then click the `Save` button to update the table.
- To delete an item from the list table, click the `Delete` button next to it.
## Derived Fields
- The server logic creates two derived fields, `Subtotal` and `Tax`. `Subtotal` is calculated by multiplying the unit price by the quantity. `Tax` is calculated by multiplying the subtotal by the Massachusetts tax rate of 0.065.
- The server logic also adds a third field, `ID`, which is a randomly generated identifier used by the program to keep track of items. This is technically not a derived field as it does not depend on any of the input fields.
## CSS
- Flexbox is used to position the items.
- There are no default fonts. The 3 fonts used (Arvo, Rock Salt, and Caveat) are imported from Google Fonts.
- The styling uses an analogous color scheme of pink (#9F17EB), purple (#5430F5), dark blue (#003ADB), bright blue (#3BBFF5), and green (#0CE8C4).

Note that there is a very large range of application areas and possibilities that meet these baseline requirements. Make your application do something useful! A todo list, storing / retrieving high scores for a very simple game, have a little fun with it.
## **Technical Achievements**

Your application is required to implement the following functionalities:
- **Tech Achievement 1**: When the client submits data (either by adding, editing, or deleting items), the server sends back the updated data and the client-side display updates. Thus the client-side display always reflects the current state of the server-side data.

- a `Server` which not only serves files, but also maintains a tabular dataset with 3 or more fields related to your application
- a `Results` functionality which shows the entire dataset residing in the server's memory
- a `Form/Entry` functionality which allows a user to add, modify, or delete data items residing in the server's memory
- a `Server Logic` which, upon receiving new or modified "incoming" data, includes and uses a function that adds at least one additional derived field to this incoming data before integrating it with the existing dataset
- the `Derived field` for a new row of data must be computed based on fields already existing in the row. For example, a `todo` dataset with `task`, `priority`, and `creation_date` may generate a new field `deadline` by looking at `creation_date` and `priority`

Your application is required to demonstrate the use of the following concepts:

HTML:
- One or more [HTML Forms](https://developer.mozilla.org/en-US/docs/Learn/HTML/Forms), with any combination of form tags appropriate for the user input portion of the application
- A results page displaying all data currently available on the server. You will most likely use a `<table>` tag for this, but `<ul>` could also work and might be simpler to work with.
- All pages should [validate](https://validator.w3.org)

CSS:
- CSS styling of the primary visual elements in the application
- Various CSS Selector functionality must be demonstrated:
- Element selectors
- ID selectors
- Class selectors
- CSS positioning and styling of the primary visual elements in the application:
- Use of either a CSS grid or flexbox for layout
- Rules defining fonts for all text used; no default fonts! Be sure to use a web safe font or a font from a web service like [Google Fonts](http://fonts.google.com/)

- CSS defined in a maintainable, readable form, in external stylesheets

JavaScript:
- At minimum, a small amount of front-end JavaScript to get / fetch data from the server; a sample is provided in this repository.

Node.js:
- An HTTP Server that delivers all necessary files and data for the application. A starting point is provided in this repository.

Deliverables
---

Do the following to complete this assignment and acheive a base grade of 85%:

1. Fork the starting project code (make sure to fork the 2020 repo!). This repo contains some starter code that may be used or discarded as needed.
2. Implement your project with the above requirements.
3. Test your project to make sure that when someone goes to your main page, it displays correctly.
4. Deploy your project to Glitch, and fill in the appropriate fields in your package.json file.
5. Ensure that your project has the proper naming scheme `a2-yourname` so we can find it.
6. Modify the README to the specifications below.
7. Create and submit a Pull Request to the original repo. Label the pull request as follows: a2-gitusername-firstname-lastname

Acheivements
---

Below are suggested technical and design achievements. You can use these to help boost your grade up to an A and customize the assignment to your personal interests. These are recommended acheivements, but feel free to create/implement your own... just make sure you thoroughly describe what you did in your README and why it was challenging. ALL ACHIEVEMENTS MUST BE DESCRIBED IN YOUR README IN ORDER TO GET CREDIT FOR THEM.

*Technical*
- (10 points) Create a single-page app that both provides a form for users to submit data and always shows the current state of the server-side data. To put it another way, when the user submits data, the server should respond sending back the updated data (including the derived field calculated on the server) and the client should then update its data display.

*Design/UX*
- (5 points per person, with a max of 10 points) Test your user interface with other students in the class. Define a specific task for them to complete (ideally something short that takes <10 minutes), and then use the [think-aloud protocol](https://en.wikipedia.org/wiki/Think_aloud_protocol) to obtain feedback on your design (talk-aloud is also find). Important considerations when designing your study:

1. Make sure you start the study by clearly stating the task that you expect your user to accomplish.
2. You shouldn't provide any verbal instructions on how to use your interface / accomplish the task you give them. Make sure that your interface is clear enough that users can figure it out without any instruction, or provide text instructions from within the interface itself.
3. If users get stuck to the point where they give up, you can then provde instruction so that the study can continue, but make sure to discuss this in your README. You won't lose any points for this... all feedback is good feedback!

You'll need to use sometype of collaborative software that will enable you both to see the test subject's screen and listen to their voice as they describe their thoughts. After completing each study, briefly (one to two sentences for each question) address the following in your README:

1. Provide the last name of each student you conduct the evaluation with.
2. What problems did the user have with your design?
3. What comments did they make that surprised you?
4. What would you change about the interface based on their feedback?

*You do not need to actually make changes based on their feedback*. This acheivement is designed to help gain experience testing user interfaces. If you run two user studies, you should answer two sets of questions.

Sample Readme (delete the above when you're ready to submit, and modify the below so with your links and descriptions)
---

## Your Web Application Title
Include a very brief summary of your project here. Be sure to include the CSS positioning technique you used, and any required instructions to use your application.

## Technical Achievements
- **Tech Achievement 1**: Using a combination of...

### Design/Evaluation Achievements
- **Design Achievement 1**:
2 changes: 1 addition & 1 deletion package.json
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"start": "node server.improved.js"
},
"dependencies": {
"mime": "^2.4.4"
"mime": "^2.5.0"
}
}
107 changes: 106 additions & 1 deletion public/css/style.css
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/*Style your own assignment! This is fun! */
html {
background-image: linear-gradient(#9F17EB, #5430F5, #003ADB, #5430F5, #9F17EB);
}

body, html {
position: absolute;
top: 0;
bottom: 0;
right: 0;
left: 0;
font-family: 'Arvo';
color: #003ADB;
}

#container {
min-height: 100%;
width: 100%;
display: flex;
flex-flow: column nowrap;
justify-content: flex-start;
background-image: linear-gradient(#9F17EB, #5430F5, #003ADB);
}

h1, input, .tHeader {
font-family: 'Rock Salt'
}

h1 {
margin-top: 0;
margin-bottom: 0;
margin-left: 2vh;
text-align: left;
color: white;
}

form, fieldset {
display: flex;
flex-flow: row wrap;
justify-content: center;
}

fieldset > div {
padding: 1vw;
}

fieldset {
background-color: #003ADB;
color: white;
border-color: #0CE8C4;
}

input[type=text] {
font-family: 'Caveat';
font-size: 4vh;
}

input[type=button] {
color: white;
background-color: #3BBFF5;
border-color: #0CE8C4;
}

#buttonDiv {
display: flex;
flex-flow: column nowrap;
justify-content: center;
}

.formButton {
height: 100%;
padding-left: 2vw;
padding-right: 2vw;
font-size: 3.5vh;
}

#listDiv {
text-align: center;
display: flex;
flex-flow: row nowrap;
justify-content: center;
}

#totalsDiv {
display: flex;
flex-flow: row wrap;
justify-content: flex-end;
margin-right: 2vw;
}

table, td {
background: rgba(255, 255, 255, 0.8);
border: 2px solid #003ADB;
border-collapse: collapse;
}

.tHeader {
color: #0CE8C4;
background-color: #003ADB;
padding-left: 1vh;
padding-right: 1vh;
}

/* the hidden class is used to hide the "add" and "save" buttons when applicable */
.hidden {
display: none;
}
93 changes: 59 additions & 34 deletions public/index.html
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<!doctype html>
<!-- Lauren Fleming Assignment 2 -->
<!DOCTYPE html>
<html lang="en">
<head>
<title>CS4241 Assignment 2</title>
<meta charset="utf-8">
<title>Shopping List</title>
<meta charset="utf-8" />
<script src="js/scripts.js" defer></script>
<link rel="stylesheet" href="css/style.css" />
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Rock+Salt">
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Arvo">
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Caveat">
</head>
<body>
<form action="">
<input type='text' id='yourname' value="your name here">
<button>submit</button>
</form>
</body>
<script>

const submit = function( e ) {
// prevent default form action from being carried out
e.preventDefault()

const input = document.querySelector( '#yourname' ),
json = { yourname: input.value },
body = JSON.stringify( json )
<div id="container">
<h1>Shopping List & Calculator</h1>

fetch( '/submit', {
method:'POST',
body
})
.then( function( response ) {
// do something with the reponse
console.log( response )
})

return false
}

window.onload = function() {
const button = document.querySelector( 'button' )
button.onclick = submit
}
<form>
<fieldset>
<div>
<label for="itemname">Item Name: </label>
<input type="text" id="itemname" value="" />
</div>
<div>
<label for="unitprice">Unit Price: $</label>
<input type="text" id="unitprice" value="" />
</div>
<div>
<label for="quantity">Quantity: </label>
<input type="text" id="quantity" value="" />
</div>
</fieldset>

<div id="buttonDiv">
<input type="button" id="addButton" class="formButton" value="Add" />
<input type="button" id="saveButton" value="Save" class="hidden formButton"/>
</div>

</form>

<br />

</script>
<div id="listDiv">
<table id="listtable"></table>
</div>

<br />

<div id="totalsDiv">
<table id="totals">
<tr>
<td class="tHeader">Subtotal</td>
<td id="totalSubtotal"></td>
</tr>
<tr>
<td class="tHeader">Tax</td>
<td id="totalTax"></td>
</tr>
<tr>
<td class="tHeader">Total</td>
<td id="totalTotal"></td>
</tr>
</table>
</div>
</div>
</body>
</html>
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