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This commit is contained in:
Daniel Cortés
2020-11-20 15:58:00 -03:00
commit d646c25984
4 changed files with 476 additions and 0 deletions
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index.html Normal file
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<html>
<head>
<meta charset=utf-8>
<meta name=viewport content="width=device-width,initial-scale=1">
<link rel="stylesheet" href="normalize.css">
<link rel="stylesheet" href="styles.css">
<title>Home</title>
</head>
<body>
<div class="container">
<div class="currency">
<h2 class="title">Conversion de Divisa</h2>
<input class="input" id="currency-money" type="number" value="1"/>
<div class="select-group">
<select class="select" id="currency-from"></select>
<span class="arrow">&rarr;</span>
<select class="select" id="currency-to"/></select>
</div>
<p class="result" id="currency-result">0</p>
<button class="button" id="update-currency">Actualizar</button>
</div>
</div>
<script defer src="script.js"></script>
</body>
</html>

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/*! modern-normalize v1.0.0 | MIT License | https://github.com/sindresorhus/modern-normalize */
/*
Document
========
*/
/**
Use a better box model (opinionated).
*/
*,
*::before,
*::after {
box-sizing: border-box;
}
/**
Use a more readable tab size (opinionated).
*/
:root {
-moz-tab-size: 4;
tab-size: 4;
}
/**
1. Correct the line height in all browsers.
2. Prevent adjustments of font size after orientation changes in iOS.
*/
html {
line-height: 1.15; /* 1 */
-webkit-text-size-adjust: 100%; /* 2 */
}
/*
Sections
========
*/
/**
Remove the margin in all browsers.
*/
body {
margin: 0;
}
/**
Improve consistency of default fonts in all browsers. (https://github.com/sindresorhus/modern-normalize/issues/3)
*/
body {
font-family:
system-ui,
-apple-system, /* Firefox supports this but not yet `system-ui` */
'Segoe UI',
Roboto,
Helvetica,
Arial,
sans-serif,
'Apple Color Emoji',
'Segoe UI Emoji';
}
/*
Grouping content
================
*/
/**
1. Add the correct height in Firefox.
2. Correct the inheritance of border color in Firefox. (https://bugzilla.mozilla.org/show_bug.cgi?id=190655)
*/
hr {
height: 0; /* 1 */
color: inherit; /* 2 */
}
/*
Text-level semantics
====================
*/
/**
Add the correct text decoration in Chrome, Edge, and Safari.
*/
abbr[title] {
text-decoration: underline dotted;
}
/**
Add the correct font weight in Edge and Safari.
*/
b,
strong {
font-weight: bolder;
}
/**
1. Improve consistency of default fonts in all browsers. (https://github.com/sindresorhus/modern-normalize/issues/3)
2. Correct the odd 'em' font sizing in all browsers.
*/
code,
kbd,
samp,
pre {
font-family:
ui-monospace,
SFMono-Regular,
Consolas,
'Liberation Mono',
Menlo,
monospace; /* 1 */
font-size: 1em; /* 2 */
}
/**
Add the correct font size in all browsers.
*/
small {
font-size: 80%;
}
/**
Prevent 'sub' and 'sup' elements from affecting the line height in all browsers.
*/
sub,
sup {
font-size: 75%;
line-height: 0;
position: relative;
vertical-align: baseline;
}
sub {
bottom: -0.25em;
}
sup {
top: -0.5em;
}
/*
Tabular data
============
*/
/**
1. Remove text indentation from table contents in Chrome and Safari. (https://bugs.chromium.org/p/chromium/issues/detail?id=999088, https://bugs.webkit.org/show_bug.cgi?id=201297)
2. Correct table border color inheritance in all Chrome and Safari. (https://bugs.chromium.org/p/chromium/issues/detail?id=935729, https://bugs.webkit.org/show_bug.cgi?id=195016)
*/
table {
text-indent: 0; /* 1 */
border-color: inherit; /* 2 */
}
/*
Forms
=====
*/
/**
1. Change the font styles in all browsers.
2. Remove the margin in Firefox and Safari.
*/
button,
input,
optgroup,
select,
textarea {
font-family: inherit; /* 1 */
font-size: 100%; /* 1 */
line-height: 1.15; /* 1 */
margin: 0; /* 2 */
}
/**
Remove the inheritance of text transform in Edge and Firefox.
1. Remove the inheritance of text transform in Firefox.
*/
button,
select { /* 1 */
text-transform: none;
}
/**
Correct the inability to style clickable types in iOS and Safari.
*/
button,
[type='button'],
[type='reset'],
[type='submit'] {
-webkit-appearance: button;
}
/**
Remove the inner border and padding in Firefox.
*/
::-moz-focus-inner {
border-style: none;
padding: 0;
}
/**
Restore the focus styles unset by the previous rule.
*/
:-moz-focusring {
outline: 1px dotted ButtonText;
}
/**
Remove the additional ':invalid' styles in Firefox.
See: https://github.com/mozilla/gecko-dev/blob/2f9eacd9d3d995c937b4251a5557d95d494c9be1/layout/style/res/forms.css#L728-L737
*/
:-moz-ui-invalid {
box-shadow: none;
}
/**
Remove the padding so developers are not caught out when they zero out 'fieldset' elements in all browsers.
*/
legend {
padding: 0;
}
/**
Add the correct vertical alignment in Chrome and Firefox.
*/
progress {
vertical-align: baseline;
}
/**
Correct the cursor style of increment and decrement buttons in Safari.
*/
::-webkit-inner-spin-button,
::-webkit-outer-spin-button {
height: auto;
}
/**
1. Correct the odd appearance in Chrome and Safari.
2. Correct the outline style in Safari.
*/
[type='search'] {
-webkit-appearance: textfield; /* 1 */
outline-offset: -2px; /* 2 */
}
/**
Remove the inner padding in Chrome and Safari on macOS.
*/
::-webkit-search-decoration {
-webkit-appearance: none;
}
/**
1. Correct the inability to style clickable types in iOS and Safari.
2. Change font properties to 'inherit' in Safari.
*/
::-webkit-file-upload-button {
-webkit-appearance: button; /* 1 */
font: inherit; /* 2 */
}
/*
Interactive
===========
*/
/*
Add the correct display in Chrome and Safari.
*/
summary {
display: list-item;
}

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const query_currency = async (base) => {
// Llama a la api para obtener los datos de conversion de divisa
// guardando los datos en localstorage
//
// En caso que se vuelva a llamar esta funcion pidiendo la misma base
// se va a evitar llamar a la api y se obtendran los datos desde localstorage
const old = JSON.parse(localStorage.getItem('currency'))
if (old != null && old.base === base) return old
const data = await fetch(`http://localhost:8000/currency?base=${base}`)
const response = await data.json()
localStorage.setItem('currency', JSON.stringify(response))
return response
}
const currency = async (money, from, to) => {
// Hace la transformacion de una divisa a otra
// Adicionalmente lo formatea segun el locale del navegador
const data = await query_currency(from)
return (data.rates[to] * money).toLocaleString(undefined, {miminumFractionDigits: 2})
}
const fill_currencies = async () => {
// Rellena los datos de los input select con las monedas
// disponibles en la api
//
// Por default deja seleccionados para from el USD y para
// to el CLP
const data = await query_currency('USD')
const from_select = document.getElementById('currency-from')
const to_select = document.getElementById('currency-to')
Object.keys(data.symbols).forEach(key => {
const option = document.createElement('option');
option.value = key
option.innerHTML = `${key}`
const from_option = option.cloneNode(true)
const to_option = option.cloneNode(true)
if(key === 'USD') {
from_option.selected = 'selected'
}
if(key === 'CLP') {
to_option.selected = 'selected'
}
from_select.appendChild(from_option)
to_select.appendChild(to_option)
})
}
const show_currency = async () => {
// Muestra los datos del cambio de divisa con los datos
// que ingreso el usuario en los campos correspondientes
//
// eso de la validacion no existe aqui :3, es para nenas
const money = document.getElementById('currency-money').value
const from_select = document.getElementById('currency-from')
const to_select = document.getElementById('currency-to')
const from = from_select.options[from_select.selectedIndex].value
const to = to_select.options[to_select.selectedIndex].value
const result = await currency(money, from, to)
document.getElementById('currency-result').innerHTML = `${result}`
}
const on_load = async () => {
// Cuando se carge la pagina se asignaran los event listeners
// necesarios para su funcionamiento y se ejecutaran funciones
// que rellenen datos
document.getElementById('update-currency').addEventListener('click', show_currency)
fill_currencies().then(() => show_currency())
}
window.addEventListener('load', on_load)

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html {
background-image: linear-gradient(to top, #4481eb 0%, #04befe 100%);
background-repeat: no-repeat;
}
.container{
display:flex;
flex-direction:column;
align-items:center;
justify-content:center;
height:100%;
}
.currency {
display: flex;
flex-direction: column;
}
.currency > * {
text-align: center;
}
.currency .arrow {
display: inline-flex;
align-items: center;
font-size: 2em;
}
.currency .select-group {
display: flex;
flex-direction: row;
justify-content: space-between;
}
.currency .title {
font-size: 1.6em;
}
.currency .input{
width: 100%;
padding: .6em 0;
margin-bottom: .5em;
}
.currency .select {
padding: .6em 0;
width: 5em;
}
.currency .result {
font-weight: 600;
font-size: 1.5em;
}
.currency .button {
padding: .6em 0;
font-size: 1.1em;
}