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  • Js 特效之鼠标点击出现小心心特效

    复制之后可以作为js文件链入,也可以放在HTML的<script>文件中

    代码如下:

    (function (window, document, undefined) {
        var hearts = [];
        window.requestAnimationFrame = (function () {
            return window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame ||
                window.oRequestAnimationFrame || window.msRequestAnimationFrame ||
                function (callback) {
                    setTimeout(callback, 1000 / 60);
                }
        })();
        init();
    
        function init() {
            css(
                ".heart{ 10px;height: 10px;position: fixed;background: #f00;transform: rotate(45deg);-webkit-transform: rotate(45deg);-moz-transform: rotate(45deg);}.heart:after,.heart:before{content: ''; inherit;height: inherit;background: inherit;border-radius: 50%;-webkit-border-radius: 50%;-moz-border-radius: 50%;position: absolute;}.heart:after{top: -5px;}.heart:before{left: -5px;}"
            );
            attachEvent();
            gameloop();
        }
    
        function gameloop() {
            for (var i = 0; i < hearts.length; i++) {
                if (hearts[i].alpha <= 0) {
                    document.body.removeChild(hearts[i].el);
                    hearts.splice(i, 1);
                    continue;
                }
                hearts[i].y--;
                hearts[i].scale += 0.004;
                hearts[i].alpha -= 0.013;
                hearts[i].el.style.cssText = "left:" + hearts[i].x + "px;top:" + hearts[i].y + "px;opacity:" + hearts[i]
                    .alpha + ";transform:scale(" + hearts[i].scale + "," + hearts[i].scale +
                    ") rotate(45deg);background:" + hearts[i].color;
            }
            requestAnimationFrame(gameloop);
        }
    
        function attachEvent() {
            var old = typeof window.onclick === "function" && window.onclick;
            window.onclick = function (event) {
                old && old();
                createHeart(event);
            }
        }
    
        function createHeart(event) {
            var d = document.createElement("div");
            d.className = "heart";
            hearts.push({
                el: d,
                x: event.clientX - 5,
                y: event.clientY - 5,
                scale: 1,
                alpha: 1,
                color: randomColor()
            });
            document.body.appendChild(d);
        }
    
        function css(css) {
            var style = document.createElement("style");
            style.type = "text/css";
            try {
                style.appendChild(document.createTextNode(css));
            } catch (ex) {
                style.styleSheet.cssText = css;
            }
            document.getElementsByTagName('head')[0].appendChild(style);
        }
    
        function randomColor() {
            return "rgb(" + (~~(Math.random() * 255)) + "," + (~~(Math.random() * 255)) + "," + (~~(Math.random() * 255)) +
                ")";
        }
    })(window, document);
    
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  • 原文地址:https://www.cnblogs.com/Lay0us/p/12063406.html
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