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console 命令行工具 X clear

                    
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console
$(function() {

	var date, dayName, day, month, year;
	var range = 270,
		sectionsDayName = 7,
		sectionsDay = 31,
		sectionsMonth = 12,
		charactersDayName = 3,
		charactersDay = 2,
		charactersMonth = 3,
		dayColor = '#FF2D55',
		monthColor = '#007AFF',
		dayNameColor = '#4CD964';
	

	// Rotate the selected ring the correct amount and illuminate the correct characters of the ring text
	function rotateRing(input, sections, characters, ring, text, color) {
		var sectionWidth = range / sections;
		var initialRotation = 135 - (sectionWidth / 2);
		var rotateAmount = initialRotation - sectionWidth * (input - 1);
		var start = (characters * (input - 1)) + (input - 1) + 1;
		
		$(ring).css({
			'-webkit-transform': 'rotate(' + rotateAmount + 'deg)',
			'-moz-transform': 'rotate(' + rotateAmount + 'deg)',
			'-ms-transform': 'rotate(' + rotateAmount + 'deg)',
			'transform': 'rotate(' + rotateAmount + 'deg)'
		});

		for (var i = start; i < start + characters; i++) {
			$(text).children('.char' + i).css({
				'color': color
			});
		}		
	}

	// Get a new date object every second and update the rotation of the clock handles
	function clockRotation() {
		setInterval(function() {
			var date = new Date();
			var seconds = date.getSeconds();
			var minutes = date.getMinutes();
			var hours = date.getHours();
			var secondsRotation = seconds * 6;
			var minutesRotation = minutes * 6;
			var hoursRotation = hours * 30 + (minutes / 2);
			$("#seconds").css({
				'-webkit-transform': 'rotate(' + secondsRotation + 'deg)',
				'-moz-transform': 'rotate(' + secondsRotation + 'deg)',
				'-ms-transform': 'rotate(' + secondsRotation + 'deg)',
				'transform': 'rotate(' + secondsRotation + 'deg)'
			});
			$("#minutes").css({
				'-webkit-transform': 'rotate(' + minutesRotation  + 'deg)',
				'-moz-transform': 'rotate(' + minutesRotation + 'deg)',
				'-ms-transform': 'rotate(' + minutesRotation + 'deg)',
				'transform': 'rotate(' + minutesRotation + 'deg)'
			});
			$("#hours").css({
				'-webkit-transform': 'rotate(' + hoursRotation  + 'deg)',
				'-moz-transform': 'rotate(' + hoursRotation + 'deg)',
				'-ms-transform': 'rotate(' + hoursRotation + 'deg)',
				'transform': 'rotate(' + hoursRotation + 'deg)'
			});
		}, 1000);
	}
	
	// Give column representing passed days and the current day this week a height
	function loadBars() {
		for(var i = 1; i <= dayName; i++){
			var newHeight = (Math.floor(Math.random() * 85) + 5);
			var newTop = 110 -  newHeight;
			$("#x"+i).css({
				'height' : newHeight + 'px',
			});	
		}
	}

	function init() {		
		$(".center-preview").lettering();
		$(".day-name-preview").lettering(); 
		$(".day-name-text").lettering();
		$(".day-preview").lettering();
		$(".day-text").lettering();
		$(".month-preview").lettering();
		$(".month-text").lettering();
		$('.day-preview').fadeTo(10, 1);
		$('.month-preview').fadeTo(10, 1);
		$('.day-name-preview').fadeTo(10, 1);
		$('.center-preview').fadeTo(10, 1);

		// Get date variables
		date = new Date();
		dayName = date.getDay(); // Day of week (1-7)
		day = date.getDate(); // Get current date (1-31)
		month = date.getMonth() + 1; // Current month (1-12)

		// Fade in/out second dial and rotate. Also fade in and animate side elements.
		setTimeout(function() {
			$('.day-preview').fadeTo(500, 0);
			$('.day-text').fadeTo(500, 1, function() {
				rotateRing(day, sectionsDay, charactersDay, '#r3', '.day-text', dayColor);
			});
		}, 500);

		// Fade in/out second dial and rotate. Also fade in and animate side elements.
		setTimeout(function() {
			$('.month-preview').fadeTo(500, 0);
			$('.fa-cloud').fadeTo(500, 1);
			$('.temperature').fadeTo(500, 1);
			$('.bars').fadeTo(500, 1);
			$('.month-text').fadeTo(500, 1, function() {
				rotateRing(month, sectionsMonth, charactersMonth, '#r2', '.month-text', monthColor);
				loadBars();
			});
		}, 1000);

		// Fade in/out first dial and rotate
		setTimeout(function() {
			$('.day-name-preview').fadeTo(500, 0);
			$('.day-name-text').fadeTo(500, 1, function() {
				rotateRing(dayName, sectionsDayName, charactersDayName, '#r1', '.day-name-text', dayNameColor);
			});
		}, 1500);

		// Fade in/out center dial
		setTimeout(function() {
			$('.center-preview').fadeTo(500, 0);
			$('.head').fadeTo(500, 0);
			$('.torso').fadeTo(500, 0);
			$(".hand-container").fadeTo(500, 1, function() {
				//console.log("Clock faded in");
			});
		}, 2000);

		// Begin clock rotation now it is visible
		clockRotation();
	}

	init();
});
<div class='center-dial'>
  <h1 class='center-preview'>HELLO</h1>
  <div class='head'></div>
  <div class='torso'></div>
  <div class='hand-container' id='minutes'>
    <div class='minute-hand'></div>
  </div>
  <div class='hand-container' id='hours'>
    <div class='hour-hand'></div>
  </div>
  <div class='hand-container' id='seconds'>
    <div class='second-hand'></div>
  </div>
</div>
<div class='day-name-dial'>
  <div class='ring-back'></div>
  <div class='ring' id='r1'>
    <h1 class='day-name-preview'>DAY NAME</h1>
    <h2 class='day-name-text'>MON TUE WED THU FRI SAT SUN</h2>
  </div>
</div>
<div class='month-dial'>
  <div class='ring-back'></div>
  <div class='ring' id='r2'>
    <h1 class='month-preview'>MONTH</h1>
    <h2 class='month-text'>JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC</h2>
  </div>
</div>
<div class='day-dial'>
  <div class='ring-back'></div>
  <div class='ring' id='r3'>
    <h1 class='day-preview'>DAY</h1>
    <h2 class='day-text'>01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31</h2>
  </div>
</div>
<div class='side-ring' id='weather'>
  <div class='fa fa-cloud'></div>
  <p class='temperature'>14&#176C</p>
</div>
<div class='side-ring' id='steps'>
  <div class='bars'>
    <div class='bar'>
      <div class='day-letter'>M</div>
      <div class='x' id='x1'></div>
    </div>
    <div class='bar'>
      <div class='day-letter'>T</div>
      <div class='x' id='x2'></div>
    </div>
    <div class='bar'>
      <div class='day-letter'>W</div>
      <div class='x' id='x3'></div>
    </div>
    <div class='bar'>
      <div class='day-letter'>T</div>
      <div class='x' id='x4'></div>
    </div>
    <div class='bar'>
      <div class='day-letter'>F</div>
      <div class='x' id='x5'></div>
    </div>
    <div class='bar'>
      <div class='day-letter'>S</div>
      <div class='x' id='x6'></div>
    </div>
    <div class='bar'>
      <div class='day-letter'>S</div>
      <div class='x' id='x7'></div>
    </div>
  </div>
</div>
// VARIABLES
$background-grey: #292929;
$ring-back: #FFFFFF;
$ring-preview-characters: 6;
$bar-colors: #FF3B30, #FF9500, #FFCC00, #4CD964, #5AC8FA, #007AFF, #5856D6;

$center-dial-size: 150px;
$day-name-size: 250px;
$month-size: 350px;
$day-size: 450px;
$h1-size: 25px;
$h2-size: 12px;
$side-ring-size: 200px;

// MIXINS
@mixin position($position, $top: null, $right: null, $bottom: null, $left: null) {
	position: $position;
	top: $top;
	right: $right;
	bottom: $bottom;
	left: $left;
}

@mixin absolute($args...) {
	@include position(absolute, $args...);
}

@mixin relative($args...) {
	@include position(relative, $args...);
}

@mixin fixed($args...) {
	@include position(fixed, $args...);
}

@mixin opacity($opacity) {
	opacity: $opacity;
	$opacity-ie: $opacity * 100;
	filter: alpha(opacity=$opacity-ie); //IE8
}

@mixin size($width, $height: $width) {
	width: $width;
	height: $height;
}

@mixin transition($args...) {
	-webkit-transition: $args;
	-moz-transition: $args;
	-ms-transition: $args;
	-o-transition: $args;
	transition: $args;
}

@mixin transition-delay($delay) {
	-webkit-transition-delay: $delay;
	-moz-transition-delay: $delay;
	-ms-transition-delay: $delay;
	-o-transition-delay: $delay;
	transition-delay: $delay;
}

@mixin transform($transforms) {
	-moz-transform: $transforms;
	-o-transform: $transforms;
	-ms-transform: $transforms;
	-webkit-transform: $transforms;
	transform: $transforms;
}

@mixin transform-origin ($origin) {
	moz-transform-origin: $origin;
	-o-transform-origin: $origin;
	-ms-transform-origin: $origin;
	-webkit-transform-origin: $origin;
	transform-origin: $origin;
}

@mixin rotated-text($num-letters: 100, $angle-span: 180deg, $angle-offset: 0deg) {
	$angle-per-char: $angle-span / $num-letters;
	@for $i from 1 through $num-letters {
		.char#{$i} {
			@include transform(rotate($angle-offset + $angle-per-char * $i));
	}
	}
}

// LOOPS
@each $current-color in $bar-colors {
    $i: index($bar-colors, $current-color);
    #x#{$i} { 
        background: $current-color;
    }
}

@for $i from 1 to 8 {
  .bar:nth-child(#{$i}) {
     @include absolute($top: 0px, $left: 20px * ($i - 1));
  }
}

// PLACEHOLDERS
%center {
	@include absolute($top: 50%, $left: 50%);
	transform: translateX(-50%) translateY(-50%);
}

%center-inside {
	@include relative($top: 50%, $left: 50%);
	transform: translateX(-50%) translateY(-50%);
}

%ring-text {
	text-align: center;
	@include transform-origin(center center);
}

// TYPICAL ELEMENTS
* {
	box-sizing: border-box;
}

html,
body {
	background: $background-grey;
	border: 0;
	font-family: 'Roboto Mono', monospace;
	height: 100%;
	margin: 0px;
	width: 100%;
}

h1 {
	color: #555;
	font-size: 25px;
}

h2{
	color: #555;
	font-size: 15px;	
}

// CLASSES AND IDS IN ORDER OF APPEARANCE IN HTML

.center-dial {
	@include absolute($top: calc(50% - 75px), $left: calc(50% - 75px));
	@include transition(all .5s);
	@include size($center-dial-size);
	background-color: #202020;
	border-radius: 50%;	color: #000;
	box-shadow: 0px 2px 2px #000;
	cursor: pointer;
	overflow: hidden;
}

.center-preview span {
	@extend %ring-text;
	@include absolute($top: 0%, $left: calc(50% - 12.5px));
	height: $center-dial-size;
	width: $h1-size;	
}

.center-preview {
	@include opacity(0);
	@include rotated-text($num-letters: 6, $angle-span: 120deg, $angle-offset: -60deg);
}

.head {
	@extend %center-inside;
	@include size(50px, 50px);
	background: #FFF;
	border-radius: 50%;
}

.torso {
	@include relative($top: calc(50% - 20px), $left: calc(50% - 50px));
	@include size(100px, 100px);
	background: #FFF;
	border-radius: 50%;
}

.hand-container {
	@extend %ring-text;
	@include absolute($top: 0%, $left: calc(50% - 12.5px));
	@include opacity(0);
	@include size($h1-size, $center-dial-size);
	@include transform-origin(center center);
}

.hour-hand {
	@include size(10px, 50px);
	@include relative($top: calc(50% - 45px), $left: calc(50% - 5px));
	@include transition(all .5s);
	background: #FFF;
	border-radius: 5px;
}

.minute-hand {
	@include size(10px, 70px);
	@include relative($top: calc(50% - 65px), $left: calc(50% - 5px));
	background: #CCC;
	border-radius: 5px;
}

.second-hand {
	@include size(2px, 70px);
	@include relative($top: calc(50% - 69px), $left: calc(50% - 1px));
	background: #AAA;
	border-radius: 1px;
}

.day-name-dial {
	@extend %center;
	@include size($day-name-size);
	@include transition(all .5s);
}

.day-name-preview span {
	@extend %ring-text;
	@include absolute($top: calc(-25% - 5px), $left: calc(50% - 12.5px));
	height: $day-name-size;
	width: $h1-size;
}

.day-name-preview {
	@include opacity(0);
	@include rotated-text($num-letters: 9, $angle-span: 90deg, $angle-offset: -45deg);
}

.day-name-text span {
	@extend %ring-text;
	@include absolute($top: calc(-25% + 5px), $left: calc(50% - 6px));
	height: 232px;	
	width: $h2-size;
}

.day-name-text {
	@include opacity(0);
	@include rotated-text($num-letters: 28, $angle-span: 270deg, $angle-offset: -135deg);
}

.month-dial {
	@extend %center;
	@include size($month-size);
	@include transition(all .5s);	
}

.month-preview span {
	@extend %ring-text;
	@include absolute($top: calc(-25% + 20px), $left: calc(50% - 12.5px));
	height: $month-size;
	width: $h1-size;	
}

.month-preview{
	@include opacity(0);
	@include rotated-text($num-letters: 6, $angle-span: 90deg, $angle-offset: -45deg);
}

.month-text span {
	@extend %ring-text;
	@include absolute($top: calc(-25% + 30px), $left: calc(50% - 6px));
	height: 332px;
	width: $h2-size;
}

.month-text{
	@include opacity(0);
	@include rotated-text($num-letters: 48, $angle-span: 270deg, $angle-offset: -135deg);
}

.day-dial {
	@extend %center;
	@include size(450px, 450px);
	@include transition(all .5s);
}

.day-preview span {
	@extend %ring-text;
	@include absolute($top: calc(-25% + 45px), $left: calc(50% - 12.5px));
	height: $day-size;
	width: $h1-size;
}

.day-preview{
	@include opacity(0);
	@include rotated-text($num-letters: 4, $angle-span: 90deg, $angle-offset: -45deg);
}

.day-text span {
	@extend %ring-text;
	@include absolute($top: calc(-25% + 55px), $left: calc(50% - 6px));
	height: 432px;
	width: $h2-size;
}

.day-text{
	@include opacity(0);
	@include rotated-text($num-letters: 93, $angle-span: 270deg, $angle-offset: -135deg);
}

.ring-back {
	@include opacity(.1);
	@include size(100%, 100%);
	border: solid 10px transparent;
	border-radius: 50%;
	
	&:before {
		@include absolute($top: 5px, $left: 5px, $bottom: 5px, $right: 5px);
		border-radius: 50%;
		border: solid 35px $ring-back;
		content: " ";
	}
}

.ring {
	@include relative($top: -100%);
	@include size(100%, 100%);
	@include transition(all .5s);
	border: solid 45px #202020;
	border-radius: 50%;
	border-bottom-color: transparent;
	box-shadow: 0px -2px 2px #000;
}

.side-ring {
	@include transition(all .5s);
	@include size($side-ring-size);
	background-color: #202020;
	border-radius: 50%;	
	box-shadow: 0px 2px 2px #000;
	color: #000;
	overflow: hidden;
}

#weather {
	@include absolute($top: calc(50% - 100px), $left: calc(20% - 100px));
}

#steps {
	@include absolute($top: calc(50% - 100px), $left: calc(80% - 100px));
}

.fa-cloud {
	@include opacity(0);
	@include absolute($top: calc(50% - 40px), $left: calc(50% - 40px));
	color: #555;
	font-size: 80px;
}

.temperature {
	@include opacity(0);
	@include absolute($top: 10%, $left: 55%); 
 	color: #FFCC00;
	font-size: 20px;
}

.bars {
	@include opacity(0);
	@include relative($top: calc(50% - 70px), $left: calc(50% - 65px));
	@include size(140px, 140px);
}

.bar {
	@include size(18px, 140px);
	margin: 0px -4px;
}

.day-letter { 
	@include relative($top: 110px);
	color: #555;
	font-size: 18px;
	text-align: center;
}

.x {
	@include absolute($bottom: 30px, $left: 1px);
	@include size(16px, 2px);
	@include transition (all .5s);
}

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