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HTML

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HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

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Insecure Resource

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CSS

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CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit- or -moz-.

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JavaScript

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JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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HTML 

              
                <div id="catchCopy">
<h1>LET'S HYPER DRIVE</h1>
<h2>You will fly to the other side of our galaxy soon. <br>Click me!</h2>
</div>
<canvas id="universe" width="1920" height="1080"></canvas>
!

CSS 

              
                html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  overflow: hidden;
  background-color: #000000;
}

#catchCopy {
  position: absolute;
  width: 100%;
  height: 100%;
  background-repeat: repeat-x;
}

#catchCopy h1 {
  font-family: sans-serif;
  font-size: 3vw;
  font-weight: bold;
  text-align: center;
  color: #fff100;
  position:absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  margin: -0.5em 0 0 -50%;
}

#catchCopy h2 {
  font-family: sans-serif;
  font-size: 0.75vw;
  text-align: center;
  color: #fff100;
  position:absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  margin: 3em 0 0 -50%;
}
!

JS 

              
                const SCREEN_WIDTH = window.innerWidth;
const SCREEN_HEIGHT = window.innerHeight;
const STARS_QUANTITY = 350;

var canvas = document.getElementById('universe');
var context = canvas.getContext('2d');
var stars;
var warpFlag = 0;
var warpLocus = { value: 1 };
var tickerFlag = 1;

starsInit();
animate();

if( document.addEventListener ) {
  document.addEventListener( 'mousedown', mouseDownHandler , false );
}

function starsInit() {
  createStars();
  setInterval(starsLoop, 30);
}

function createStars() {
  stars = [];
  for (var i = 0; i < STARS_QUANTITY; i++) {

    var rdmx = (Math.random() * (SCREEN_WIDTH - 10)) + 5;
    var rdmy = (Math.random() * (SCREEN_HEIGHT - 5)) + 2.5;
    var rdmvx = (rdmx - SCREEN_WIDTH / 2) / 1000;
    var rdmvy = (rdmy - SCREEN_HEIGHT / 2) / 1000;

    var star = {
      radius: Math.random() * 1 + 0.25,
      ix: rdmx,
      iy: rdmy,
      x: rdmx,
      y: rdmy,
      vx: rdmvx,
      vy: rdmvy
    };
    stars.push(star);
  }
}

function starsLoop() {

  context.fillStyle = 'rgba(0,0,0,' + warpLocus.value + ')';
  context.fillRect(0, 0, context.canvas.width, context.canvas.height);

  for (i = 0; i < STARS_QUANTITY; i++) {
    var st = stars[i];
    var lp = { x: st.x, y: st.y };

    st.x += st.vx;
    st.y += st.vy;

    if (st.x > SCREEN_WIDTH || st.x < 0) {
      st.x = st.ix;
      st.y = st.iy;
    }
    if (st.y > SCREEN_HEIGHT || st.y < 0) {
      st.x = st.ix;
      st.y = st.iy;
    }

    if(warpFlag == 0) {
      context.fillStyle = "rgb(255,255,255)";
      context.beginPath();
      context.arc(st.x, st.y, st.radius, 0, Math.PI*2, true);
      context.closePath();
      context.fill();
    } else {
      context.beginPath();
      context.fillStyle = "rgb(255,255,255)";
      context.strokeStyle = "rgb(255,255,255)";
      context.lineWidth = st.radius;
      context.moveTo(lp.x, lp.y);
      context.lineTo(st.x, st.y);
      context.stroke();
      context.arc(st.x, st.y, st.radius, 0, Math.PI*2, true);
      context.fill();
    }
  }
}

function mouseDownHandler(e) {

  TWEEN.removeAll();

  if(warpFlag == 0) {
    warpFlag = 1;
    for (i = 0; i < STARS_QUANTITY; i++) {
      var vxValue = (stars[i].x - SCREEN_WIDTH / 2) / 10;
      var vyValue = (stars[i].y - SCREEN_HEIGHT / 2) / 10;
      new TWEEN.Tween( stars[i] )
        .to( { vx: vxValue }, 5000 )
        .easing( TWEEN.Easing.Circular.In )
        .start();
      new TWEEN.Tween( stars[i] )
        .to( { vy: vyValue }, 5000 )
        .easing( TWEEN.Easing.Circular.In )
        .start();
      new TWEEN.Tween( warpLocus )
        .to( { value: 0.05 }, 10 )
        .easing( TWEEN.Easing.Circular.In )
        .start();
    }
  } else {
    warpFlag = 0;
    for (i = 0; i < STARS_QUANTITY; i++) {
      var vxValue = (stars[i].x - SCREEN_WIDTH / 2) / 1000;
      var vyValue = (stars[i].y - SCREEN_HEIGHT / 2) / 1000;
      new TWEEN.Tween( stars[i] )
        .to( { vx: vxValue }, 5000 )
        .easing( TWEEN.Easing.Circular.Out )
        .start();
      new TWEEN.Tween( stars[i] )
        .to( { vy: vyValue }, 5000 )
        .easing( TWEEN.Easing.Circular.Out )
        .start();
      new TWEEN.Tween( warpLocus )
        .to( { value: 1 }, 5000 )
        .easing( TWEEN.Easing.Circular.Out )
        .start();
    }
  }
}

function animate()
{
  requestAnimationFrame( animate );
  TWEEN.update();
}
!
999px

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