这篇文章主要介绍了怎么用HTML+CSS+JavaScript实现在线表白神器的相关知识，内容详细易懂，操作简单快捷，具有一定借鉴价值，相信大家阅读完这篇怎么用HTML+CSS+JavaScript实现在线表白神器文章都会有所收获，下面我们一起来看看吧。
HTML源码：
<!DOCTYPE html><html><head><meta charset="utf-8" /><title>W3Cschool-编程网</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 />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.jsvar $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);} };关于“怎么用HTML+CSS+JavaScript实现在线表白神器”这篇文章的内容就介绍到这里，感谢各位的阅读！相信大家对“怎么用HTML+CSS+JavaScript实现在线表白神器”知识都有一定的了解，大家如果还想学习更多知识，欢迎关注编程网行业资讯频道。
