html--心花怒放

代码

        Canvas 绘制一个❤                html,        body {            height: 100%;            padding: 0;            margin: 0;        }        canvas {            position: absolute;            width: 100%;            height: 100%;        }                Canvas Not Support                /*     * 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 = duration && firstActive != firstFree) {                    firstActive++;                    if (firstActive == particles.length) firstActive = 0;                }            };            ParticlePool.prototype.draw = function (context, image) {                // draw active particles                if (firstActive