200行Html5+CSS3+JS代碼實作動態圣誕樹-有解無憂

一、前言

最近CSDN的熱榜出現了很多用Python、C/C++等編程語言實作的圣誕樹，發現很少用前端的，這篇文章用前端三大殺手Html5、CSS、Js來實作動態圣誕樹，

二、圣誕樹

效果展示：

備注：

整體圣誕樹分為3個部分，書的主干、粒子特效、樹上的卡片
樹上的卡片(重點)：每一張卡片上都有一個名字，代表圣誕樹的葉子，后面可以根據自己需求更改，比如全部改成喜歡人的名字，在JS代碼的第五行內更改內容
樹的動態旋轉通過js實作、主干是html5、樣式CSS

三、編碼實作

CSS代碼：


/*********************************************
 * RESET
 *********************************************/

html{color:#000;background:#222222;}
a{cursor:pointer;}
html,body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,code,form,fieldset,legend,input,textarea,p,blockquote,th,td{margin:0;padding:0;}
table{border-collapse:collapse;border-spacing:0;}
fieldset,img{border:0;}
address,caption,cite,code,dfn,em,strong,th,var{font-style:normal;font-weight:normal;}
li{list-style:none;}
caption,th{text-align:left;}
/* h1,h2,h3,h4,h5,h6{font-size:100%;} */
q:before,q:after{content:'';}
abbr,acronym {border:0;font-variant:normal;}
sup {vertical-align:text-top;}
sub {vertical-align:text-bottom;}
input,textarea,select{font-family:inherit;font-size:inherit;font-weight:inherit;outline-style:none;outline-width:0pt;}
legend{color:#000;}
a:focus,object,h1,h2,h3,h4,h5,h6{-moz-outline-style: none; border:0px;}
/*input[type="Submit"]{cursor:pointer;}*/
strong {font-weight: bold;}


/*********************************************
 * GLOBAL
 *********************************************/

body, html {
	overflow: hidden;
	font-family: Helvetica, Arial, sans-serif;
	color: #fff;
	font-size: 11px;

	width: 100%;
	height: 100%;

	background: #b72424;
	background: -moz-radial-gradient(center, ellipse cover, #b72424 0%, #492727 100%);
	background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%,#b72424), color-stop(100%,#492727));
	background: -webkit-radial-gradient(center, ellipse cover, #b72424 0%,#492727 100%);
	background: radial-gradient(center, ellipse cover, #b72424 0%,#492727 100%);
}

@keyframes spin {
	0% { transform: rotateY( 0deg ); }
	100% { transform: rotateY( 360deg ); }
}

body {
	perspective: 3000px;
	perspective-origin: 0 20%;
}

.tree {
	margin: 0 auto;
	position: relative;
	animation: spin 18s infinite linear;
	transform-origin: 50% 0;
	transform-style: preserve-3d;
}

.tree * {
	position: absolute;
	transform-origin: 0 0;
}

Html代碼：

<!DOCTYPE html>
<html lang="en">
    <head>
		<meta charset="utf-8">

		<meta name="description" content="A Christmas tree built out of form elements." />
		<meta name="author" content="Hakim El Hattab" />

		<meta http-equiv="X-UA-Compatible" content="chrome=1">

        <title>DOM Tree</title>

		<link href="css/domtree.css" rel="stylesheet" media="screen" />

		<link href='https://fonts.googleapis.com/css?family=Armata' rel='stylesheet' type='text/css'>

    </head>
    <body>
    	<div class="tree"></div>

		<script src="js/domtree.js"></script>

		<!-- Third party scripts and sharing UI -->
		<p class="project-title">DOM Tree</p>

		<div class="credits">
			<a href="https://blog.csdn.net/qq_53673551?spm=1000.2115.3001.5343">知心寶貝</a>
			<a href="https://twitter.com/hakimel">文章代碼參考@hakimel</a>
		</div>

		<style type="text/css" media="screen">
			.project-title {
				position: absolute;
				left: 25px;
				bottom: 20px;

				font-size: 16px;
				color: #fff;
			}

			.credits {
				position: absolute;
				right: 20px;
				bottom: 25px;
				font-size: 15px;
				z-index: 20;
				color: #fff;
				vertical-align: middle;
			}

			.credits * + * {
				margin-left: 15px;
			}

			.credits a {
				padding: 8px 10px;
				color: rgba(255,255,255,0.7);
				border: 2px solid rgba(255,255,255,0.7);
				text-decoration: none;
			}

			.credits a:hover {
				border-color: #fff;
				color: #fff;
			}

			@media screen and (max-width: 1040px) {
				.project-title {
					display: none;
				}

				.credits {
					width: 100%;
					left: 0;
					right: auto;
					bottom: 0;
					padding: 30px 0;
					background: #b72424;
					text-align: center;
				}

				.credits a {
					display: inline-block;
					margin-top: 7px;
					margin-bottom: 7px;
				}
			}
		</style>

		<script>
			var _gaq = [['_setAccount', 'UA-15240703-1'], ['_trackPageview']];
			(function(d, t) {
			var g = d.createElement(t),
			    s = d.getElementsByTagName(t)[0];
			g.async = true;
			g.src = ('https:' == location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
			s.parentNode.insertBefore(g, s);
			})(document, 'script');
		</script>

    </body>
</html>

JS代碼：

const width = 500;
const height = 600;
const quantity = 150;
const types = [ 'text', 'select', 'progress', 'meter', 'button', 'radio', 'checkbox' ];
const greetings = [ '知心寶貝','知心寶貝','Merry Christmas','Merry Christmas','Merry Christmas','Merry Christmas','知心寶貝','12月25','知心寶貝','Merry Christmas','Happy Holidays', ' 知心寶貝','12月25','知心寶貝','Merry Christmas','知心寶貝','Merry Christmas','知心寶貝' ];
let tree = document.querySelector( '.tree' ),
	treeRotation = 0;

tree.style.width = width + 'px';
tree.style.height = height + 'px';

window.addEventListener( 'resize', resize, false );

// The tree
for( var i = 0; i < quantity; i++ ) {
	let element = null,
		type = types[ Math.floor( Math.random() * types.length ) ],
		greeting = greetings[ Math.floor( Math.random() * greetings.length ) ];

	let x = width/2,
		y = Math.round( Math.random() * height );

	let rx = 0,
		ry = Math.random() * 360,
		rz = -Math.random() * 15;

	let elemenWidth = 5 + ( ( y / height ) * width / 2 ),
		elemenHeight = 26;

	switch( type ) {
		case 'button':
			element = document.createElement( 'button' );
			element.textContent = greeting;
			element.style.width = elemenWidth + 'px';
			element.style.height = elemenHeight + 'px';
			break;
		case 'progress':
			element = document.createElement( 'progress' );
			element.style.width = elemenWidth + 'px';
			element.style.height = elemenHeight + 'px';
			if( Math.random() > 0.5 ) {
				element.setAttribute( 'max', '100' );
				element.setAttribute( 'value', Math.round( Math.random() * 100 ) );
			}
			break;
		case 'select':
			element = document.createElement( 'select' );
			element.setAttribute( 'selected', greeting );
			element.innerHTML = '<option>' + greetings.join( '</option><option>' ) + '</option>';
			element.style.width = elemenWidth + 'px';
			element.style.height = elemenHeight + 'px';
			break;
		case 'meter':
			element = document.createElement( 'meter' );
			element.setAttribute( 'min', '0' );
			element.setAttribute( 'max', '100' );
			element.setAttribute( 'value', Math.round( Math.random() * 100 ) );
			element.style.width = elemenWidth + 'px';
			element.style.height = elemenHeight + 'px';
			break;
		case 'text':
		default:
			element = document.createElement( 'input' );
			element.setAttribute( 'type', 'text' );
			element.setAttribute( 'value', greeting );
			element.style.width = elemenWidth + 'px';
			element.style.height = elemenHeight + 'px';
	}

	element.style.transform = `translate3d(${x}px, ${y}px, 0px) rotateX(${rx}deg) rotateY(${ry}deg) rotateZ(${rz}deg)`;

	tree.appendChild( element );
}

// Let it snow
for( var i = 0; i < 200; i++ ) {
	let element = document.createElement( 'input' );
	element.setAttribute( 'type', 'radio' );

	let spread = window.innerWidth/2;

	let x = Math.round( Math.random() * spread ) - ( spread / 4 ),
		y = Math.round( Math.random() * height ),
		z = Math.round( Math.random() * spread ) - ( spread / 2 );

	let rx = 0,
		ry = Math.random() * 360,
		rz = 0;

	if( Math.random() > 0.5 ) element.setAttribute( 'checked', '' );

	element.style.transform = `translate3d(${x}px, ${y}px, ${z}px) rotateX(${rx}deg) rotateY(${ry}deg) rotateZ(${rz}deg)`;

	tree.appendChild( element );
}

function resize() {
	tree.style.top = ( ( window.innerHeight - height - 100 ) / 2 ) + 'px';
}

resize();

附錄：

零基礎必看的Html5+Css3+移動端前端教程（一）

零基礎必看的Html5+Css3+移動端前端教程(二)

零基礎必看的Html5+Css3+移動端前端教程(三)

零基礎必看的Html5+Css3+移動端前端教程(四)

零基礎必看的Html5+Css3+移動端前端教程(五)

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標籤：python

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