html5+css3實現三款好看的告白愛心特效，趕緊去給女朋友演示吧

言：每當過節的時候，女朋友就抱怨我總是忘記給她買花，說程序不懂浪漫，這不我準備了幾款愛心動畫特效，打算當面向她表達一下。

第一款：html5通過canvas實現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★★★

新建index.html，復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★★★

新建index.html，復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★★★

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：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、關注、轉發，謝謝大家。

注本頭條，專注做前端

馬上就到520，作為程序員來說，這是不可多得的表白神器——html5+canvas制作的愛心，由很多個小愛心組成的大愛心，可3d旋轉，效果非常不錯

愛心中間名字可自定義

// 演示

https://www.html5tricks.com/demo/html5-heart-explain/index2.html

// 下載

https://www.html5tricks.com/download/html5-heart-explain.rar

今為了追到女朋友，眾位男士也是掏空心思，絞盡腦汁想各種表白的新招式，務必給女神一個難以忘記的表白。程序員當然也不例外。既然學的是編程，那就要好好利用編程做一個與眾不同的表白，那最適合的編程語言就是前端了，能夠輕而易舉的就做出各種讓女孩心動的代碼特效。

更多特效源碼，編程資料，私信我1即可免費領取。

首先特效鎮文：

今天我們講的就是如何用代碼做出一個愛心表白特效。源碼如下：

<!DOCTYPE html>

<html>

<head>

<style>

*{margin: 0; padding: 0;}

ul,ol{list-style: none;}

a{text-decoration: none;color: inherit;}

.clearfix:after{content: '';display: block;clear: both;}

.clear{clear: both;}

body{

background-color: #8a0a0a;

}

.love{

display: table;

flex-wrap: wrap;

margin: 100px auto;

}

.box{

float:left;

width: 25px;

height: 25px;

border-radius: 2px;

margin-right: 2px;

margin-bottom: 2px

}

.box:hover{

background: #8a0a0a;

}

.box:not(.transparent){

background-color: #fff;

opacity: 0;

transform: translateY(-300px);

animation: move 4s infinite;

}

@keyframes move{

25%{

opacity: 1;

transform: translateY(0);

}

50%{

opacity: 1;

transform: translateY(0);

}

65%{

opacity: 1;

transform: translateY(0);

}

100%{

opacity: 0;

transform: translateY(300px);

}

.box.delay1{

animation-delay: .1s;

}

.box.delay2{

animation-delay: .2s;

}

.box.delay3{

animation-delay: .4s;

}

.box.delay4{

animation-delay: .5s;

}

.box.delay5{

animation-delay: .7s;

}

.box.delay6{

animation-delay: .9s;

}

width: 1000px;

margin: 200px auto 0;

color: #fff;

font-size: 40px;

text-align: center;

}

</style>

</head>

<body>

</div>

<p>我愛代碼，也愛你，雖然我不善言辭，請讓我用我的方式說：我愛你！</p>

</body>

</html>

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html5+css3實現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實現浪漫告白愛心動畫特效

第二款：html5通過canvas實現愛心氣球上升動畫特效

第三款：jQuery+css3實現愛心雨動畫特效

您的項目需求