硬核在线表白神器！！！用HTML+CSS+JavaScript即可实现。

猿友 2021-03-09 10:52:21 浏览数 (4664)
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人们总说理工科男生不懂浪漫，不懂得讲情话。在这里 W3Cschool 小编觉得很有必要为他们正名一下。谁说我们不懂浪漫，只是你们不懂我们的浪漫。前有伟大的数学家笛卡尔写出告白公式，后又有程序员小哥哥开发陪聊系统，全天 24 小时推送问候，自动回复女友的微信消息。你看，理工科男生浪漫起来谁能抵挡呢？

105

笛卡尔的心形公式

那么今天，我们用 HTML+CSS+JavaScript 编写一个告白神器，女朋友一看，都感动到哭呢！

1111

先来看下运行最终结果！！！在线演示地址：http://www.zuidaima.com/html/1695882735602688/index.html

1

HTML源码：

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>W3Cschool-编程狮</title>
<style type="text/css">
@font-face {
	font-family: digit;
	src: url('digital-7_mono.ttf') format("truetype");
}
</style>

<link href="css/default.css" type="text/css" rel="stylesheet">
<script type="text/javascript" src="js/jquery.js"></script>
<script type="text/javascript" src="js/garden.js"></script>
<script type="text/javascript" src="js/functions.js"></script>

</head>

<body>

<div id="mainDiv">
	<div id="content">
		<div id="code">
			<span class="comments">/**</span><br />
			<span class="space"/><span class="comments">*2020—02-19,</span><br />
			<span class="space"/><span class="comments">*2021_03_09.</span><br />
			<span class="space"/><span class="comments">*/</span><br />
			Boy name = <span class="keyword">Mr</span> Leo<br />
			Girl name = <span class="keyword">Mrs</span> Jenny<br />
			<span class="comments">// Fall in love river. </span><br />
			The boy love the girl;<br />
			<span class="comments">// They love each other.</span><br />
			The girl loved the boy;<br />
			<span class="comments">// AS time goes on.</span><br />
			The boy can not be separated the girl;<br />
			<span class="comments">// At the same time.</span><br />
			The girl can not be separated the boy;<br />
			<span class="comments">// Both wind and snow all over the sky.</span><br />
			<span class="comments">// Whether on foot or 5 kilometers.</span><br />
			<span class="keyword">The boy</span> very <span class="keyword">happy</span>;<br />
			<span class="keyword">The girl</span> is also very <span class="keyword">happy</span>;<br />
			<span class="placeholder"/><span class="comments">// Whether it is right now</span><br />
			<span class="placeholder"/><span class="comments">// Still in the distant future.</span><br />
			<span class="placeholder"/>The boy has but one dream;<br />
			<span class="comments">// The boy wants the girl could well have been happy.</span><br />
			<br>
			<br>
			I want to say:<br />
			Baby, I would love you forever;<br />
		</div>
		<div id="loveHeart">
			<canvas id="garden"></canvas>
			<div id="words">
				<div id="messages">
					亲爱的，这是我们在一起走过的时光。
					<div id="elapseClock"></div>
				</div>
				<div id="loveu">
					Love you forever!!!<br/>
					<div class="signature">- Loving</div>
				</div>
			</div>
		</div>
	</div>
</div>

<script type="text/javascript">
var offsetX = $("#loveHeart").width() / 2;
var offsetY = $("#loveHeart").height() / 2 - 55;
var together = new Date();
together.setFullYear(2020, 01, 19);//月份一栏的数据填入是0-11，即01为2月份。
together.setHours(0);
together.setMinutes(0);
together.setSeconds(0);
together.setMilliseconds(0);

if (!document.createElement('canvas').getContext) {
	var msg = document.createElement("div");
	msg.id = "errorMsg";
	msg.innerHTML = "Your browser doesn't support HTML5!<br/>Recommend use Chrome 14+/IE 9+/Firefox 7+/Safari 4+"; 
	document.body.appendChild(msg);
	$("#code").css("display", "none")
	$("#copyright").css("position", "absolute");
	$("#copyright").css("bottom", "10px");
	document.execCommand("stop");
} else {
	setTimeout(function () {
		startHeartAnimation();
	}, 3000);

	timeElapse(together);
	setInterval(function () {
		timeElapse(together);//elapse:计算时间差函数；
	}, 500);

	adjustCodePosition();
	$("#code").typewriter();
}
</script>
</body>
</html>

css源码：

body{margin:0;padding:0;background:#ffe;font-size:12px;overflow:auto}
#mainDiv{width:100%;height:100%}
#loveHeart{float:left;width:670px;height:625px}
#garden{width:100%;height:100%}
#elapseClock{text-align:right;font-size:18px;margin-top:10px;margin-bottom:10px}
#words{font-family:"sans-serif";width:500px;font-size:24px;color:#666}
#messages{display:none}
#elapseClock .digit{font-family:"digit";font-size:36px}
#loveu{padding:5px;font-size:22px;margin-top:80px;margin-right:120px;text-align:right;display:none}
#loveu .signature{margin-top:10px;font-size:20px;font-style:italic}
#clickSound{display:none}
#code{float:left;width:440px;height:400px;color:#333;font-family:"Consolas","Monaco","Bitstream Vera Sans Mono","Courier New","sans-serif";font-size:12px}
#code .string{color:#2a36ff}
#code .keyword{color:#7f0055;font-weight:bold}
#code .placeholder{margin-left:15px}#code .space{margin-left:7px}
#code .comments{color:#3f7f5f}
#copyright{margin-top:10px;text-align:center;width:100%;color:#666}
#errorMsg{width:100%;text-align:center;font-size:24px;position:absolute;top:100px;left:0}
#copyright a{color:#666}

JavaScript源码：

//function.js
var $window = $(window), gardenCtx, gardenCanvas, $garden, garden;
var clientWidth = $(window).width();
var clientHeight = $(window).height();

$(function () {
    // setup garden
	$loveHeart = $("#loveHeart");
	var offsetX = $loveHeart.width() / 2;
	var offsetY = $loveHeart.height() / 2 - 55;
    $garden = $("#garden");
    gardenCanvas = $garden[0];
	gardenCanvas.width = $("#loveHeart").width();
    gardenCanvas.height = $("#loveHeart").height()
    gardenCtx = gardenCanvas.getContext("2d");
    gardenCtx.globalCompositeOperation = "lighter";
    garden = new Garden(gardenCtx, gardenCanvas);
	
	$("#content").css("width", $loveHeart.width() + $("#code").width());
	$("#content").css("height", Math.max($loveHeart.height(), $("#code").height()));
	$("#content").css("margin-top", Math.max(($window.height() - $("#content").height()) / 2, 10));
	$("#content").css("margin-left", Math.max(($window.width() - $("#content").width()) / 2, 10));

    // renderLoop
    setInterval(function () {
        garden.render();
    }, Garden.options.growSpeed);
});

$(window).resize(function() {
    var newWidth = $(window).width();
    var newHeight = $(window).height();
    if (newWidth != clientWidth && newHeight != clientHeight) {
        location.replace(location);
    }
});

function getHeartPoint(angle) {
	var t = angle / Math.PI;
	var x = 19.5 * (16 * Math.pow(Math.sin(t), 3));
	var y = - 20 * (13 * Math.cos(t) - 5 * Math.cos(2 * t) - 2 * Math.cos(3 * t) - Math.cos(4 * t));
	return new Array(offsetX + x, offsetY + y);
}

function startHeartAnimation() {
	var interval = 50;
	var angle = 10;
	var heart = new Array();
	var animationTimer = setInterval(function () {
		var bloom = getHeartPoint(angle);
		var draw = true;
		for (var i = 0; i < heart.length; i++) {
			var p = heart[i];
			var distance = Math.sqrt(Math.pow(p[0] - bloom[0], 2) + Math.pow(p[1] - bloom[1], 2));
			if (distance < Garden.options.bloomRadius.max * 1.3) {
				draw = false;
				break;
			}
		}
		if (draw) {
			heart.push(bloom);
			garden.createRandomBloom(bloom[0], bloom[1]);
		}
		if (angle >= 30) {
			clearInterval(animationTimer);
			showMessages();
		} else {
			angle += 0.2;
		}
	}, interval);
}

(function($) {
	$.fn.typewriter = function() {
		this.each(function() {
			var $ele = $(this), str = $ele.html(), progress = 0;
			$ele.html('');
			var timer = setInterval(function() {
				var current = str.substr(progress, 1);
				if (current == '<') {
					progress = str.indexOf('>', progress) + 1;
				} else {
					progress++;
				}
				$ele.html(str.substring(0, progress) + (progress & 1 ? '_' : ''));
				if (progress >= str.length) {
					clearInterval(timer);
				}
			}, 75);
		});
		return this;
	};
})(jQuery);

function timeElapse(date){
	var current = Date();
	var seconds = (Date.parse(current) - Date.parse(date)) / 1000;
	var days = Math.floor(seconds / (3600 * 24));
	seconds = seconds % (3600 * 24);
	var hours = Math.floor(seconds / 3600);
	if (hours < 10) {
		hours = "0" + hours;
	}
	seconds = seconds % 3600;
	var minutes = Math.floor(seconds / 60);
	if (minutes < 10) {
		minutes = "0" + minutes;
	}
	seconds = seconds % 60;
	if (seconds < 10) {
		seconds = "0" + seconds;
	}
	var result = "<span class=\"digit\">" + days + "</span> days <span class=\"digit\">" + hours + "</span> hours <span class=\"digit\">" + minutes + "</span> minutes <span class=\"digit\">" + seconds + "</span> seconds"; 
	$("#elapseClock").html(result);
}

function showMessages() {
	adjustWordsPosition();
	$('#messages').fadeIn(5000, function() {
		showLoveU();
	});
}

function adjustWordsPosition() {
	$('#words').css("position", "absolute");
	$('#words').css("top", $("#garden").position().top + 195);
	$('#words').css("left", $("#garden").position().left + 70);
}

function adjustCodePosition() {
	$('#code').css("margin-top", ($("#garden").height() - $("#code").height()) / 2);
}

function showLoveU() {
	$('#loveu').fadeIn(3000);
}
//garden.js	 
   function Vector(x, y) {
	        this.x = x;
	        this.y = y;
	    };
		
	    Vector.prototype = {
	        rotate: function (theta) {
	            var x = this.x;
	            var y = this.y;
	            this.x = Math.cos(theta) * x - Math.sin(theta) * y;
	            this.y = Math.sin(theta) * x + Math.cos(theta) * y;
	            return this;
	        },
	        mult: function (f) {
	            this.x *= f;
	            this.y *= f;
	            return this;
	        },
	        clone: function () {
	            return new Vector(this.x, this.y);
	        },
	        length: function () {
	            return Math.sqrt(this.x * this.x + this.y * this.y);
	        },
	        subtract: function (v) {
	            this.x -= v.x;
	            this.y -= v.y;
	            return this;
	        },
	        set: function (x, y) {
	            this.x = x;
	            this.y = y;
	            return this;
	        }
	    };
		
	    function Petal(stretchA, stretchB, startAngle, angle, growFactor, bloom) {
	        this.stretchA = stretchA;
	        this.stretchB = stretchB;
	        this.startAngle = startAngle;
	        this.angle = angle;
	        this.bloom = bloom;
	        this.growFactor = growFactor;
	        this.r = 1;
	        this.isfinished = false;
	        //this.tanAngleA = Garden.random(-Garden.degrad(Garden.options.tanAngle), Garden.degrad(Garden.options.tanAngle));
	        //this.tanAngleB = Garden.random(-Garden.degrad(Garden.options.tanAngle), Garden.degrad(Garden.options.tanAngle));
	    }
	    Petal.prototype = {
	        draw: function () {
	            var ctx = this.bloom.garden.ctx;
	            var v1, v2, v3, v4;
	            v1 = new Vector(0, this.r).rotate(Garden.degrad(this.startAngle));
	            v2 = v1.clone().rotate(Garden.degrad(this.angle));
	            v3 = v1.clone().mult(this.stretchA); //.rotate(this.tanAngleA);
	            v4 = v2.clone().mult(this.stretchB); //.rotate(this.tanAngleB);
	            ctx.strokeStyle = this.bloom.c;
	            ctx.beginPath();
	            ctx.moveTo(v1.x, v1.y);
	            ctx.bezierCurveTo(v3.x, v3.y, v4.x, v4.y, v2.x, v2.y);
	            ctx.stroke();
	        },
	        render: function () {
	            if (this.r <= this.bloom.r) {
	                this.r += this.growFactor; // / 10;
	                this.draw();
	            } else {
	                this.isfinished = true;
	            }
	        }
	    }

	    function Bloom(p, r, c, pc, garden) {
	        this.p = p;
	        this.r = r;
	        this.c = c;
	        this.pc = pc;
	        this.petals = [];
	        this.garden = garden;
	        this.init();
	        this.garden.addBloom(this);
	    }
	    Bloom.prototype = {
	        draw: function () {
	            var p, isfinished = true;
	            this.garden.ctx.save();
	            this.garden.ctx.translate(this.p.x, this.p.y);
	            for (var i = 0; i < this.petals.length; i++) {
	                p = this.petals[i];
	                p.render();
	                isfinished *= p.isfinished;
	            }
	            this.garden.ctx.restore();
	            if (isfinished == true) {
	                this.garden.removeBloom(this);
	            }
	        },
	        init: function () {
	            var angle = 360 / this.pc;
	            var startAngle = Garden.randomInt(0, 90);
	            for (var i = 0; i < this.pc; i++) {
	                this.petals.push(new Petal(Garden.random(Garden.options.petalStretch.min, Garden.options.petalStretch.max), Garden.random(Garden.options.petalStretch.min, Garden.options.petalStretch.max), startAngle + i * angle, angle, Garden.random(Garden.options.growFactor.min, Garden.options.growFactor.max), this));
	            }
	        }
	    }

	    function Garden(ctx, element) {
	        this.blooms = [];
	        this.element = element;
	        this.ctx = ctx;
	    }
	    Garden.prototype = {
	        render: function () {
	            for (var i = 0; i < this.blooms.length; i++) {
	                this.blooms[i].draw();
	            }
	        },
	        addBloom: function (b) {
	            this.blooms.push(b);
	        },
	        removeBloom: function (b) {
	            var bloom;
	            for (var i = 0; i < this.blooms.length; i++) {
	                bloom = this.blooms[i];
	                if (bloom === b) {
	                    this.blooms.splice(i, 1);
	                    return this;
	                }
	            }
	        },
	        createRandomBloom: function (x, y) {
	            this.createBloom(x, y, Garden.randomInt(Garden.options.bloomRadius.min, Garden.options.bloomRadius.max), Garden.randomrgba(Garden.options.color.rmin, Garden.options.color.rmax, Garden.options.color.gmin, Garden.options.color.gmax, Garden.options.color.bmin, Garden.options.color.bmax, Garden.options.color.opacity), Garden.randomInt(Garden.options.petalCount.min, Garden.options.petalCount.max));
	        },
	        createBloom: function (x, y, r, c, pc) {
	            new Bloom(new Vector(x, y), r, c, pc, this);
	        },
	        clear: function () {
	            this.blooms = [];
	            this.ctx.clearRect(0, 0, this.element.width, this.element.height);
	        }
	    }

	    Garden.options = {
	        petalCount: {
	            min: 8,
	            max: 15
	        },
	        petalStretch: {
	            min: 0.1,
	            max: 3
	        },
	        growFactor: {
	            min: 0.1,
	            max: 1
	        },
	        bloomRadius: {
	            min: 8,
	            max: 10
	        },
	        density: 10,
	        growSpeed: 1000 / 60,
	        color: {
				rmin: 128,
				rmax: 255,
				gmin: 0,
				gmax: 128,
				bmin: 0,
				bmax: 128,
	            opacity: 0.1
	        },
	        tanAngle: 60
	    };
	    Garden.random = function (min, max) {
	        return Math.random() * (max - min) + min;
	    };
	    Garden.randomInt = function (min, max) {
	        return Math.floor(Math.random() * (max - min + 1)) + min;
	    };
	    Garden.circle = 2 * Math.PI;
	    Garden.degrad = function (angle) {
	        return Garden.circle / 360 * angle;
	    };
	    Garden.raddeg = function (angle) {
	        return angle / Garden.circle * 360;
	    };
	    Garden.rgba = function (r, g, b, a) {
	        return 'rgba(' + r + ',' + g + ',' + b + ',' + a + ')';
	    };
	    Garden.randomrgba = function (rmin, rmax, gmin, gmax, bmin, bmax, a) {
			var r = Math.round(Garden.random(rmin, rmax));
			var g = Math.round(Garden.random(gmin, gmax));
			var b = Math.round(Garden.random(bmin, bmax));
			var limit = 5;
			if (Math.abs(r - g) <= limit && Math.abs(g - b) <= limit && Math.abs(b - r) <= limit) {
				return Garden.rgba(rmin, rmax, gmin, gmax, bmin, bmax, a);
			} else {
				return Garden.rgba(r, g, b, a);
			}
	    };

以上就是代码的全部。学习完顺便做个效果向女朋友表白噢。

更多好玩有趣的效果学习，请关注 W3Cschool 官网。

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