Ladies and gentlemen good evening （雷迪森俺的杰森们晚上好）

今天我找了一位大佬学了一个特效烟花，特此献给大家 下面请看代码

结构

结构代码不多就两行

    <div id="tips">
        <a id="manual" href="javascript:;">手动放烟花</a>
        <a id="auto" href="javascript:;">自动放烟花</a>
    </div>

样式

 html,
        body {
            overflow: hidden;
        }
        
        body,
        div,
        p {
            margin: 0;
            padding: 0;
        }
        
        body {
            background: #000;
            font: 12px/1.5 arial;
            color: #7A7A7A;
        }
        
        a {
            text-decoration: none;
            outline: none;
        }
        
        #tips,
        #copyright {
            position: absolute;
            width: 100%;
            height: 50px;
            text-align: center;
            background: #171717;
            border: 2px solid #484848;
        }
        
        #tips {
            top: 0;
            border-width: 0 0 2px;
        }
        
        #tips a {
            font: 14px/30px arial;
            color: #FFF;
            background: #F06;
            display: inline-block;
            margin: 10px 5px 0;
            padding: 0 15px;
            border-radius: 15px;
        }
        
        #tips a.active {
            background: #FE0000;
        }
        
        #copyright {
            bottom: 0;
            line-height: 50px;
            border-width: 2px 0 0;
        }
        
        #copyright a {
            color: #FFF;
            background: #7A7A7A;
            padding: 2px 5px;
            border-radius: 10px;
        }
        
        #copyright a:hover {
            background: #F90;
        }
        
        p {
            position: absolute;
            top: 55px;
            width: 100%;
            text-align: center;
        }

js

接下来是重头戏，js代码

  var fgm = {
        on: function(element, type, handler) {
            return element.addEventListener ? element.addEventListener(type, handler, false) : element.attachEvent("on" + type, handler)
        },
        un: function(element, type, handler) {
            return element.removeEventListener ? element.removeEventListener(type, handler, false) : element.detachEvent("on" + type, handler)
        },
        bind: function(object, handler) {
            return function() {
                return handler.apply(object, arguments)
            }
        },
        randomRange: function(lower, upper) { //产生范围在lower~upper的随机数
            return Math.floor(Math.random() * (upper - lower + 1) + lower)
        },
        getRanColor: function() { //随机获得十六进制颜色
            var str = this.randomRange(0, 0xFFFFFF).toString(16);
            while (str.length < 6) str = "0" + str;
            return "#" + str
        }
    };
    //初始化对象
    function FireWorks() {
        this.type = 0;
        this.timer = null;
        this.fnManual = fgm.bind(this, this.manual)
    }
    FireWorks.prototype = {
        initialize: function() {
            clearTimeout(this.timer);
            fgm.un(document, "click", this.fnManual);
            switch (this.type) {
                case 1:
                    fgm.on(document, "click", this.fnManual);
                    break;
                case 2:
                    this.auto();
                    break;
            };
        },
        manual: function(event) {
            event = event || window.event;
            this.__create__({
                x: event.clientX,
                y: event.clientY
            });
        },

        auto: function() {
            var that = this;
            that.timer = setTimeout(function() {
                that.__create__({
                    x: fgm.randomRange(50, document.documentElement.clientWidth - 50),
                    y: fgm.randomRange(50, document.documentElement.clientHeight - 150)
                })
                that.auto();
            }, fgm.randomRange(900, 1100))
        },
        __create__: function(param) {
            //param即鼠标点击点（即烟花爆炸点）
            var that = this;
            var oEntity = null;
            var oChip = null;
            var aChip = [];
            var timer = null;
            var oFrag = document.createDocumentFragment();

            oEntity = document.createElement("div");
            with(oEntity.style) { //烟花上升过程实体初始化
                position = "absolute";
                //初始位置距网页顶部为：整个网页的高度（处于网页底部）
                top = document.documentElement.clientHeight + "px";
                left = param.x + "px";
                width = "4px";
                height = "30px";
                borderRadius = "4px";
                background = fgm.getRanColor();
            };
            document.body.appendChild(oEntity);
            //window.setInterval方法 该方法使得一个函数每隔固定时间被调用一次
            //                console.log(param.y);
            oEntity.timer = setInterval(function() {
                //                    console.log(oEntity.offsetTop);
                //                    console.log(oEntity.style.top);
                oEntity.style.top = oEntity.offsetTop - 20 + "px";
                //判断烟花是否上升到或者第一次超过上次鼠标点击位置
                if (oEntity.offsetTop <= param.y) {
                    //烟花爆炸
                    clearInterval(oEntity.timer);
                    document.body.removeChild(oEntity);
                    (function() {
                        //在50-100之间随机生成碎片
                        //由于IE浏览器处理效率低, 随机范围缩小至20-30
                        //自动放烟花时, 随机范围缩小至20-30
                        var len = (/msie/i.test(navigator.userAgent) || that.type == 2) ? fgm.randomRange(20, 30) : fgm.randomRange(50, 100)
                            //产生所有烟花爆炸颗粒实体
                        for (i = 0; i < len; i++) {
                            //烟花颗粒形态实体
                            oChip = document.createElement("div");
                            with(oChip.style) {
                                position = "absolute";
                                top = param.y + "px";
                                left = param.x + "px";
                                width = "4px";
                                height = "4px";
                                overflow = "hidden";
                                borderRadius = "4px";
                                background = fgm.getRanColor();
                            };
                            oChip.speedX = fgm.randomRange(-20, 20);
                            oChip.speedY = fgm.randomRange(-20, 20);
                            oFrag.appendChild(oChip);
                            aChip[i] = oChip
                        };
                        document.body.appendChild(oFrag);
                        timer = setInterval(function() {
                            for (i = 0; i < aChip.length; i++) {
                                var obj = aChip[i];
                                with(obj.style) {
                                    top = obj.offsetTop + obj.speedY + "px";
                                    left = obj.offsetLeft + obj.speedX + "px";
                                };
                                obj.speedY++;
                                //判断烟花爆炸颗粒是否掉落至窗体之外，为真则remove
                                //splice() 方法可删除从 index 处开始的零个或多个元素
                                (obj.offsetTop < 0 || obj.offsetLeft < 0 || obj.offsetTop > document.documentElement.clientHeight || obj.offsetLeft > document.documentElement.clientWidth) && (document.body.removeChild(obj), aChip.splice(i, 1))
                            };
                            //判断烟花爆炸颗粒是否全部remove，为真则clearInterval(timer);
                            !aChip[0] && clearInterval(timer);
                        }, 30)
                    })()
                }
            }, 30)
        }
    };

    fgm.on(window, "load", function() {
        var oTips = document.getElementById("tips");
        var aBtn = oTips.getElementsByTagName("a");
        var oFireWorks = new FireWorks();

        fgm.on(oTips, "click", function(event) {
            var oEvent = event || window.event;
            var oTarget = oEvent.target || oEvent.srcElement;
            var i = 0;
            if (oTarget.tagName.toUpperCase() == "A") {
                for (i = 0; i < aBtn.length; i++) aBtn[i].className = "";
                switch (oTarget.id) {
                    case "manual":
                        oFireWorks.type = 1;
                        break;
                    case "auto":
                        oFireWorks.type = 2;
                        break;
                    case "stop":
                        oFireWorks.type = 0;
                        break;
                }
                oFireWorks.initialize();
                oTarget.className = "active";
                //阻止浏览器默认的事件冒泡行为
                oEvent.stopPropagation ? oEvent.stopPropagation() : oEvent.cancelBubble = true
            }
        });
    });
    fgm.on(document, "contextmenu", function(event) {
        var oEvent = event || window.event;
        oEvent.preventDefault ? oEvent.preventDefault() : oEvent.returnValue = false
    });

烟花一共有两种形式一种是手动放烟花，另一种是自动放烟花，非常漂亮

• 手动放烟花
  
• 自动放烟花
  
  很抱歉我这里只能给大家提供图片，但是原文大佬那里有视频的
  原文链接