html5+css3實現(xiàn)三款好看的告白愛心特效，趕緊去給女朋友演示吧

言：每當(dāng)過節(jié)的時候，女朋友就抱怨我總是忘記給她買花，說程序不懂浪漫，這不我準(zhǔn)備了幾款愛心動畫特效，打算當(dāng)面向她表達(dá)一下。

第一款：html5通過canvas實現(xiàn)浪漫告白愛心動畫特效

寓意：告白無須多么華麗的語言，一顆顆小的愛心匯聚成一顆真心，讓你的另一半感受到濃濃的愛意。

代碼難度系數(shù)★★★

新建index.html，復(fù)制以下代碼保存在瀏覽器中打開即可。

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>canvas 心</title>

<style>
html, body {
  height: 100%;
  padding: 0;
  margin: 0;
  background: #000;
}
canvas {
  position: absolute;
  width: 100%;
  height: 100%;
}</style>
</head>
<body>

<canvas id="pinkboard"></canvas>

<script>
/*
 * Settings
 */
var settings = {
  particles: {
    length:   500, // maximum amount of particles
    duration:   2, // particle duration in sec
    velocity: 100, // particle velocity in pixels/sec
    effect: -0.75, // play with this for a nice effect
    size:      30, // particle size in pixels
  },
};

/*
 * RequestAnimationFrame polyfill by Erik M?ller
 */
(function(){var b=0;var c=["ms","moz","webkit","o"];for(var a=0;a<c.length&&!window.requestAnimationFrame;++a){window.requestAnimationFrame=window[c[a]+"RequestAnimationFrame"];window.cancelAnimationFrame=window[c[a]+"CancelAnimationFrame"]||window[c[a]+"CancelRequestAnimationFrame"]}if(!window.requestAnimationFrame){window.requestAnimationFrame=function(h,e){var d=new Date().getTime();var f=Math.max(0,16-(d-b));var g=window.setTimeout(function(){h(d+f)},f);b=d+f;return g}}if(!window.cancelAnimationFrame){window.cancelAnimationFrame=function(d){clearTimeout(d)}}}());

/*
 * Point class
 */
var Point = (function() {
  function Point(x, y) {
    this.x = (typeof x !== 'undefined') ? x : 0;
    this.y = (typeof y !== 'undefined') ? y : 0;
  }
  Point.prototype.clone = function() {
    return new Point(this.x, this.y);
  };
  Point.prototype.length = function(length) {
    if (typeof length == 'undefined')
      return Math.sqrt(this.x * this.x + this.y * this.y);
    this.normalize();
    this.x *= length;
    this.y *= length;
    return this;
  };
  Point.prototype.normalize = function() {
    var length = this.length();
    this.x /= length;
    this.y /= length;
    return this;
  };
  return Point;
})();

/*
 * Particle class
 */
var Particle = (function() {
  function Particle() {
    this.position = new Point();
    this.velocity = new Point();
    this.acceleration = new Point();
    this.age = 0;
  }
  Particle.prototype.initialize = function(x, y, dx, dy) {
    this.position.x = x;
    this.position.y = y;
    this.velocity.x = dx;
    this.velocity.y = dy;
    this.acceleration.x = dx * settings.particles.effect;
    this.acceleration.y = dy * settings.particles.effect;
    this.age = 0;
  };
  Particle.prototype.update = function(deltaTime) {
    this.position.x += this.velocity.x * deltaTime;
    this.position.y += this.velocity.y * deltaTime;
    this.velocity.x += this.acceleration.x * deltaTime;
    this.velocity.y += this.acceleration.y * deltaTime;
    this.age += deltaTime;
  };
  Particle.prototype.draw = function(context, image) {
    function ease(t) {
      return (--t) * t * t + 1;
    }
    var size = image.width * ease(this.age / settings.particles.duration);
    context.globalAlpha = 1 - this.age / settings.particles.duration;
    context.drawImage(image, this.position.x - size / 2, this.position.y - size / 2, size, size);
  };
  return Particle;
})();

/*
 * ParticlePool class
 */
var ParticlePool = (function() {
  var particles,
      firstActive = 0,
      firstFree   = 0,
      duration    = settings.particles.duration;
  
  function ParticlePool(length) {
    // create and populate particle pool
    particles = new Array(length);
    for (var i = 0; i < particles.length; i++)
      particles[i] = new Particle();
  }
  ParticlePool.prototype.add = function(x, y, dx, dy) {
    particles[firstFree].initialize(x, y, dx, dy);
    
    // handle circular queue
    firstFree++;
    if (firstFree   == particles.length) firstFree   = 0;
    if (firstActive == firstFree       ) firstActive++;
    if (firstActive == particles.length) firstActive = 0;
  };
  ParticlePool.prototype.update = function(deltaTime) {
    var i;
    
    // update active particles
    if (firstActive < firstFree) {
      for (i = firstActive; i < firstFree; i++)
        particles[i].update(deltaTime);
    }
    if (firstFree < firstActive) {
      for (i = firstActive; i < particles.length; i++)
        particles[i].update(deltaTime);
      for (i = 0; i < firstFree; i++)
        particles[i].update(deltaTime);
    }
    
    // remove inactive particles
    while (particles[firstActive].age >= duration && firstActive != firstFree) {
      firstActive++;
      if (firstActive == particles.length) firstActive = 0;
    }
    
    
  };
  ParticlePool.prototype.draw = function(context, image) {
    // draw active particles
    if (firstActive < firstFree) {
      for (i = firstActive; i < firstFree; i++)
        particles[i].draw(context, image);
    }
    if (firstFree < firstActive) {
      for (i = firstActive; i < particles.length; i++)
        particles[i].draw(context, image);
      for (i = 0; i < firstFree; i++)
        particles[i].draw(context, image);
    }
  };
  return ParticlePool;
})();

/*
 * Putting it all together
 */
(function(canvas) {
  var context = canvas.getContext('2d'),
      particles = new ParticlePool(settings.particles.length),
      particleRate = settings.particles.length / settings.particles.duration, // particles/sec
      time;
  
  // get point on heart with -PI <= t <= PI
  function pointOnHeart(t) {
    return new Point(
      160 * Math.pow(Math.sin(t), 3),
      130 * Math.cos(t) - 50 * Math.cos(2 * t) - 20 * Math.cos(3 * t) - 10 * Math.cos(4 * t) + 25
    );
  }
  
  // creating the particle image using a dummy canvas
  var image = (function() {
    var canvas  = document.createElement('canvas'),
        context = canvas.getContext('2d');
    canvas.width  = settings.particles.size;
    canvas.height = settings.particles.size;
    // helper function to create the path
    function to(t) {
      var point = pointOnHeart(t);
      point.x = settings.particles.size / 2 + point.x * settings.particles.size / 350;
      point.y = settings.particles.size / 2 - point.y * settings.particles.size / 350;
      return point;
    }
    // create the path
    context.beginPath();
    var t = -Math.PI;
    var point = to(t);
    context.moveTo(point.x, point.y);
    while (t < Math.PI) {
      t += 0.01; // baby steps!
      point = to(t);
      context.lineTo(point.x, point.y);
    }
    context.closePath();
    // create the fill
    context.fillStyle = '#ea80b0';
    context.fill();
    // create the image
    var image = new Image();
    image.src = canvas.toDataURL();
    return image;
  })();
  
  // render that thing!
  function render() {
    // next animation frame
    requestAnimationFrame(render);
    
    // update time
    var newTime   = new Date().getTime() / 1000,
        deltaTime = newTime - (time || newTime);
    time = newTime;
    
    // clear canvas
    context.clearRect(0, 0, canvas.width, canvas.height);
    
    // create new particles
    var amount = particleRate * deltaTime;
    for (var i = 0; i < amount; i++) {
      var pos = pointOnHeart(Math.PI - 2 * Math.PI * Math.random());
      var dir = pos.clone().length(settings.particles.velocity);
      particles.add(canvas.width / 2 + pos.x, canvas.height / 2 - pos.y, dir.x, -dir.y);
    }
    
    // update and draw particles
    particles.update(deltaTime);
    particles.draw(context, image);
  }
  
  // handle (re-)sizing of the canvas
  function onResize() {
    canvas.width  = canvas.clientWidth;
    canvas.height = canvas.clientHeight;
  }
  window.onresize = onResize;
  
  // delay rendering bootstrap
  setTimeout(function() {
    onResize();
    render();
  }, 10);
})(document.getElementById('pinkboard'));</script>

</body>
</html>

第二款：html5通過canvas實現(xiàn)愛心氣球上升動畫特效

寓意：將想說的話打開一顆顆的愛心氣球上，隨著氣球不斷的升空，讓整個氛圍可更加地纏綿，看到此處可以有感動的淚水。

代碼難度系數(shù)★★★

新建index.html，復(fù)制以下代碼保存在瀏覽器中打開即可。

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>情人節(jié)快樂:)</title>

<style>
canvas {
	position: absolute;
	top: 0;
	left: 0;
}</style>
</head>
<body>
<canvas id=c></canvas>

<script>
var w = c.width = window.innerWidth,
		h = c.height = window.innerHeight,
		ctx = c.getContext( '2d' ),
		
		opts = {
			phrases: [ "Don't die\nit's not hard", "You're the Best", "Every day,\nYou're beautiful", "Every occasion,\nYou're clever", "A world without You?\nNah", "Keep kicking ass", "You're better than them,\nwhoever they are", "You're just amazing", "You are,\ntherefore I am", "Nothing better than You \ncould have happened to the world" ],
			balloons: 10,
			baseVelY: -1,
			addedVelY: -1,
			baseVelX: -.25,
			addedVelX: .5,
			baseSize: 20,
			addedSize: 10,
			baseSizeAdder: 2,
			addedSizeAdder: 2,
			baseIncrementer: .01,
			addedIncrementer: .03,
			baseHue: -10,
			addedHue: 30,
			font: '15px Verdana'
		},
		
		cycle = 0,
		balloons = [];

ctx.font = opts.font;

function Balloon(){
	this.reset();
}
Balloon.prototype.reset = function(){
	
	this.size = opts.baseSize + opts.addedSize * Math.random();
	this.sizeAdder = opts.baseSizeAdder + opts.addedSizeAdder * Math.random();
	this.incrementer = opts.baseIncrementer + opts.addedIncrementer * Math.random();
	
	this.tick = 0;
	
	this.x = Math.random() * w;
	this.y = h + this.size;
	
	this.vx = opts.baseVelX + opts.addedVelX * Math.random();
	this.vy = opts.baseVelY + opts.addedVelY * Math.random();
	
	this.color = 'hsla(hue,70%,60%,.8)'.replace( 'hue', opts.baseHue + opts.addedHue * Math.random() );
	this.phrase = opts.phrases[ ++cycle % opts.phrases.length ].split( '\n' );
	this.lengths = [];
	
	for( var i = 0; i < this.phrase.length; ++i )
		this.lengths.push( -ctx.measureText( this.phrase[ i ] ).width / 2 );
}
Balloon.prototype.step = function(){
	
	this.tick += this.incrementer;
	this.x += this.vx;
	this.y += this.vy;
	
	var size = this.size + this.sizeAdder * Math.sin( this.tick );
	
	ctx.lineWidth = size / 40;
	ctx.strokeStyle = '#eee';
	ctx.beginPath();
	ctx.moveTo( this.x, this.y - 2 );
	ctx.lineTo( this.x, this.y + size );
	ctx.stroke();
	ctx.fillStyle = this.color;
	
	ctx.translate( this.x, this.y );
	ctx.rotate( Math.PI / 4 );
	//ctx.fillRect( -size / 2, -size / 2, size / 2, size / 2 );
	ctx.beginPath();
	ctx.moveTo( 0, 0 );
	ctx.arc( -size / 2, -size / 2 + size / 4, size / 4, Math.PI / 2, Math.PI * 3 / 2 );
	ctx.arc( -size / 2 + size / 4, -size / 2, size / 4, Math.PI, Math.PI * 2 );
	ctx.lineTo( 0, 0 );
	ctx.fill();
	ctx.rotate( -Math.PI / 4 );
	ctx.translate( -this.x, -this.y );
	
	ctx.translate( this.x, this.y + size + 15 );
	ctx.scale( size / this.size, size / this.size );
	ctx.fillStyle = '#eee';
	for( var i = 0; i < this.phrase.length; ++i )
		ctx.fillText( this.phrase[ i ], this.lengths[ i ], i * 15 );
	ctx.scale( this.size / size, this.size / size );
	ctx.translate( -this.x, -( this.y + size + 15 ) );
	
	if( this.y < -size * 3 )
		this.reset();
	
}

function anim(){
	
	window.requestAnimationFrame( anim );
	
	ctx.fillStyle = '#222';
	ctx.fillRect( 0, 0, w, h );
	
	if( balloons.length < opts.balloons && Math.random() < .01 )
		balloons.push( new Balloon );
	
	for( var i = 0; i < balloons.length; ++i )
		balloons[ i ].step();
}
anim();</script>

</body>
</html>

第三款：jQuery+css3實現(xiàn)愛心雨動畫特效

寓意：天空中下起了愛心雨，襯托的房間變得溫暖，也讓整個場景都變得溫馨無比，想必此時可以有一個大大的擁抱。

代碼難度系數(shù)★★★

代碼有image、js和html，所以不好貼出來，有需要的朋友直接問我要吧。

總結(jié)：程序員的工作本身就很枯燥，特定找了幾個好看的特效拿出來和大家分享，希望大家能夠快樂每一天，上述代碼親測可用，歡迎點贊收藏。

《完》

大家如果喜歡的話麻煩點贊、關(guān)注、轉(zhuǎn)發(fā)，謝謝大家。

注頭條號，專注做前端

誰說程序員不浪漫，其實有些程序還是很浪漫的好嘛，懂得學(xué)以致用，下面是一個前端開發(fā)利用所學(xué)html5制作的html5愛心+表白，附源碼

如果你是一個單身程序員，那么趕緊的拿下這個資源吧

源碼下載

http://zjdx1.sc.chinaz.com/Files/DownLoad/webjs1/201401/jiaoben1892.rar

////

S和css實現(xiàn)，這是部分代碼

注：這是一個3D場景，在PC端的話還可以按住鼠標(biāo)左鍵并拖動鼠標(biāo)，來從各個視角觀察它。

降低作品檔次的效果圖：

寓意解釋：

通過JS和CSS3組合實現(xiàn)的碎片飄零效果。每個碎片都由一句情話組成，無數(shù)的情話碎片構(gòu)成了心型。在【情歌】伴隨下，當(dāng)所有【情話】碎片飛開后，便出現(xiàn)了更高的感情表達(dá)——【情畫】。

當(dāng)兩個人的情感不再需要用言語——情話來表達(dá)時（即當(dāng)所有【情話】碎片飛開后），就出現(xiàn)了更高的感情境界——情畫。）

HTML代碼

<!doctype html>

<html>

<head>

</head>

<body>

</audio>

夢隨風(fēng)醉纏綿<br>

情如繭凝成緣<br>

百花牽衣吐艷

</div>

</div>

</body>

</html>

css代碼

* {

box-sizing: border-box;

}

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html5+css3實現(xiàn)三款好看的告白愛心特效，趕緊去給女朋友演示吧

第一款：html5通過canvas實現(xiàn)浪漫告白愛心動畫特效

第二款：html5通過canvas實現(xiàn)愛心氣球上升動畫特效

第三款：jQuery+css3實現(xiàn)愛心雨動畫特效

您的項目需求