HTML ,CSS AND JAVA SCRIPT TIMER
Today we are going to make a website that measures time
These are for your birthdays or special days
Time can be measured...
HTML CODE:-
<div class="container"> <link rel="stylesheet" type="text/css" href="style.css" <h1 id="headline">Countdown to O/L Exam</h1> <div id="countdown"> <ul> <li><span id="days"></span>days</li> <li><span id="hours"></span>Hours</li> <li><span id="minutes"></span>Minutes</li> <li><span id="seconds"></span>Seconds</li> </ul> </div> <div id="content" class="emoji"> <span>🥳</span> <span>🎉</span> <span>🎂</span> </div></div>
INDEX.JS
// Import stylesheetsimport './style.scss';(function () { const second = 1000, minute = second * 60, hour = minute * 60, day = hour * 24; //I'm adding this section so I don't have to keep updating this pen every year :-) //remove this if you don't need it let today = new Date(), dd = String(today.getDate()).padStart(2, '0'), mm = String(today.getMonth() + 1).padStart(2, '0'), yyyy = today.getFullYear(), nextYear = yyyy + 1, dayMonth = '05/01/', birthday = dayMonth + yyyy; today = mm + '/' + dd + '/' + yyyy; if (today > birthday) { birthday = dayMonth + nextYear; } //end const countDown = new Date(birthday).getTime(), x = setInterval(function () { const now = new Date().getTime(), distance = countDown - now; (document.getElementById('days').innerText = Math.floor(distance / day)), (document.getElementById('hours').innerText = Math.floor( (distance % day) / hour )), (document.getElementById('minutes').innerText = Math.floor( (distance % hour) / minute )), (document.getElementById('seconds').innerText = Math.floor( (distance % minute) / second )); //do something later when date is reached if (distance < 0) { document.getElementById('headline').innerText = "It's my birthday!"; document.getElementById('countdown').style.display = 'none'; document.getElementById('content').style.display = 'block'; clearInterval(x); } //seconds }, 0);})();
PACKGE.json
{ "name": "pure-css-app", "version": "0.0.0", "private": true, "dependencies": {}}
STYLE.CSS
/* general styling */ :root { --smaller: .75; } * { box-sizing: border-box; margin: 0; padding: 0; } html, body { height: 100%; margin: 0; } body { align-items: center; background-color: #ffd54f; display: flex; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif; } .container { color: #333; margin: 0 auto; text-align: center; } h1 { font-weight: normal; letter-spacing: .125rem; text-transform: uppercase; } li { display: inline-block; font-size: 1.5em; list-style-type: none; padding: 1em; text-transform: uppercase; } li span { display: block; font-size: 4.5rem; } .emoji { display: none; padding: 1rem; } .emoji span { font-size: 4rem; padding: 0 .5rem; } @media all and (max-width: 768px) { h1 { font-size: calc(1.5rem * var(--smaller)); } li { font-size: calc(1.125rem * var(--smaller)); } li span { font-size: calc(3.375rem * var(--smaller)); } }
TML (HyperText Markup Language) is the most basic building block of the Web. It defines the meaning and structure of web content. Other technologies besides HTML are generally used to describe a web page's appearance/presentation (CSS) or functionality/behavior (JavaScript).
"Hypertext" refers to links that connect web pages to one another, either within a single website or between websites. Links are a fundamental aspect of the Web. By uploading content to the Internet and linking it to pages created by other people, you become an active participant in the World Wide Web.
HTML uses "markup" to annotate text, images, and other content for display in a Web browser. HTML markup includes special "elements" such as <head>, <title>, <body>, <header>, <footer>, <article>, <section>, <p>, <div>, <span>, <img>, <aside>, <audio>, <canvas>, <datalist>, <details>, <embed>, <nav>, <search>, <output>, <progress>, <video>, <ul>, <ol>, <li> and many others.
An HTML element is set off from other text in a document by "tags", which consist of the element name surrounded by "<" and ">". The name of an element inside a tag is case-insensitive. That is, it can be written in uppercase, lowercase, or a mixture. For example, the <title> tag can be written as <Title>, <TITLE>, or in any other way. However, the convention and recommended practice is to write tags in lowercase.
The articles below can help you learn more about HTML.
INDEX.JS
// Import stylesheets
PACKGE.json
STYLE.CSS
TML (HyperText Markup Language) is the most basic building block of the Web. It defines the meaning and structure of web content. Other technologies besides HTML are generally used to describe a web page's appearance/presentation (CSS) or functionality/behavior (JavaScript).
"Hypertext" refers to links that connect web pages to one another, either within a single website or between websites. Links are a fundamental aspect of the Web. By uploading content to the Internet and linking it to pages created by other people, you become an active participant in the World Wide Web.
HTML uses "markup" to annotate text, images, and other content for display in a Web browser. HTML markup includes special "elements" such as <head>, <title>, <body>, <header>, <footer>, <article>, <section>, <p>, <div>, <span>, <img>, <aside>, <audio>, <canvas>, <datalist>, <details>, <embed>, <nav>, <search>, <output>, <progress>, <video>, <ul>, <ol>, <li> and many others.
An HTML element is set off from other text in a document by "tags", which consist of the element name surrounded by "<" and ">". The name of an element inside a tag is case-insensitive. That is, it can be written in uppercase, lowercase, or a mixture. For example, the <title> tag can be written as <Title>, <TITLE>, or in any other way. However, the convention and recommended practice is to write tags in lowercase.
The articles below can help you learn more about HTML.
Key resources
- HTML Introduction
If you're new to web development, be sure to read our HTML Basics article to learn what HTML is and how to use it.
- HTML Tutorials
For articles about how to use HTML, as well as tutorials and complete examples, check out our HTML Learning Area.
- HTML Reference
In our extensive HTML reference section, you'll find the details about every element and attribute in HTML.
- HTML Introduction
If you're new to web development, be sure to read our HTML Basics article to learn what HTML is and how to use it.
- HTML Tutorials
For articles about how to use HTML, as well as tutorials and complete examples, check out our HTML Learning Area.
- HTML Reference
In our extensive HTML reference section, you'll find the details about every element and attribute in HTML.
Beginner's tutorials
Our HTML Learning Area features multiple modules that teach HTML from the ground up — no previous knowledge required.
- Introduction to HTML
This module sets the stage, getting you used to important concepts and syntax such as looking at applying HTML to text, how to create hyperlinks, and how to use HTML to structure a web page.
- Multimedia and embedding
This module explores how to use HTML to include multimedia in your web pages, including the different ways that images can be included, and how to embed video, audio, and even entire other webpages.
- HTML tables
Representing tabular data on a webpage in an understandable, accessible way can be a challenge. This module covers basic table markup, along with more complex features such as implementing captions and summaries.
- HTML forms
Forms are a very important part of the Web — these provide much of the functionality you need for interacting with websites, e.g. registering and logging in, sending feedback, buying products, and more. This module gets you started with creating the client-side/front-end parts of forms.
- Use HTML to solve common problems
Provides links to sections of content explaining how to use HTML to solve very common problems when creating a web page: dealing with titles, adding images or videos, emphasizing content, creating a basic form, etc.
Our HTML Learning Area features multiple modules that teach HTML from the ground up — no previous knowledge required.
- Introduction to HTML
This module sets the stage, getting you used to important concepts and syntax such as looking at applying HTML to text, how to create hyperlinks, and how to use HTML to structure a web page.
- Multimedia and embedding
This module explores how to use HTML to include multimedia in your web pages, including the different ways that images can be included, and how to embed video, audio, and even entire other webpages.
- HTML tables
Representing tabular data on a webpage in an understandable, accessible way can be a challenge. This module covers basic table markup, along with more complex features such as implementing captions and summaries.
- HTML forms
Forms are a very important part of the Web — these provide much of the functionality you need for interacting with websites, e.g. registering and logging in, sending feedback, buying products, and more. This module gets you started with creating the client-side/front-end parts of forms.
- Use HTML to solve common problems
Provides links to sections of content explaining how to use HTML to solve very common problems when creating a web page: dealing with titles, adding images or videos, emphasizing content, creating a basic form, etc.
Advanced topics
- CORS enabled image
The crossorigin attribute, in combination with an appropriate CORS header, allows images defined by the <img> element to be loaded from foreign origins and used in a <canvas> element as if they were being loaded from the current origin.
- CORS settings attributes
Some HTML elements that provide support for CORS, such as <img> or <video>, have a crossorigin attribute (crossOrigin property), which lets you configure the CORS requests for the element's fetched data.
- Preloading content with rel="preload"
The preload value of the <link> element's rel attribute allows you to write declarative fetch requests in your HTML <head>, specifying resources that your pages will need very soon after loading, which you therefore want to start preloading early in the lifecycle of a page load, before the browser's main rendering machinery kicks in. This ensures that they are made available earlier and are less likely to block the page's first render, leading to performance improvements. This article provides a basic guide to how preload works.
- CORS enabled image
The
crossoriginattribute, in combination with an appropriate CORS header, allows images defined by the<img>element to be loaded from foreign origins and used in a<canvas>element as if they were being loaded from the current origin.- CORS settings attributes
Some HTML elements that provide support for CORS, such as
<img>or<video>, have acrossoriginattribute (crossOriginproperty), which lets you configure the CORS requests for the element's fetched data.- Preloading content with rel="preload"
The
preloadvalue of the<link>element'srelattribute allows you to write declarative fetch requests in your HTML<head>, specifying resources that your pages will need very soon after loading, which you therefore want to start preloading early in the lifecycle of a page load, before the browser's main rendering machinery kicks in. This ensures that they are made available earlier and are less likely to block the page's first render, leading to performance improvements. This article provides a basic guide to howpreloadworks.
Reference
- HTML reference
HTML consists of elements, each of which may be modified by some number of attributes. HTML documents are connected to each other with links.
- HTML element reference
- HTML attribute reference
Elements in HTML have attributes. These are additional values that configure the elements or adjust their behavior in various ways.
- Global attributes
Global attributes may be specified on all HTML elements, even those not specified in the standard. This means that any non-standard elements must still permit these attributes, even though those elements make the document HTML5-noncompliant.
- Inline-level elements and block-level elements
HTML elements are usually "inline-level" or "block-level" elements. An inline-level element occupies only the space bounded by the tags that define it. A block-level element occupies the entire space of its parent element (container), thereby creating a "block box".
- HTML comments
HTML comments are used to add explanatory notes to the markup or to prevent the browser from interpreting specific parts of the document.
- Guide to media types and formats on the web
The <audio> and <video> elements allow you to play audio and video media natively within your content without the need for external software support.
- HTML content categories
HTML is comprised of several kinds of content, each of which is allowed to be used in certain contexts and is disallowed in others. Similarly, each context has a set of other content categories it can contain and elements that can or can't be used in them. This is a guide to these categories.
- Quirks mode and standards mode
Historical information on quirks mode and standards mode.
- HTML reference
HTML consists of elements, each of which may be modified by some number of attributes. HTML documents are connected to each other with links.
- HTML element reference
- HTML attribute reference
Elements in HTML have attributes. These are additional values that configure the elements or adjust their behavior in various ways.
- Global attributes
Global attributes may be specified on all HTML elements, even those not specified in the standard. This means that any non-standard elements must still permit these attributes, even though those elements make the document HTML5-noncompliant.
- Inline-level elements and block-level elements
HTML elements are usually "inline-level" or "block-level" elements. An inline-level element occupies only the space bounded by the tags that define it. A block-level element occupies the entire space of its parent element (container), thereby creating a "block box".
- HTML comments
HTML comments are used to add explanatory notes to the markup or to prevent the browser from interpreting specific parts of the document.
- Guide to media types and formats on the web
The
<audio>and<video>elements allow you to play audio and video media natively within your content without the need for external software support.- HTML content categories
HTML is comprised of several kinds of content, each of which is allowed to be used in certain contexts and is disallowed in others. Similarly, each context has a set of other content categories it can contain and elements that can or can't be used in them. This is a guide to these categories.
- Quirks mode and standards mode
Historical information on quirks mode and standards mode.
Related topics
- Applying color to HTML elements using CSS
This article covers most of the ways you use CSS to add color to HTML content, listing what parts of HTML documents can be colored and what CSS properties to use when doing so.
- Applying color to HTML elements using CSS
This article covers most of the ways you use CSS to add color to HTML content, listing what parts of HTML documents can be colored and what CSS properties to use when doing so.