jQuery火箭图标返回顶部代码

在网上找来段使用jQuery火箭图标返回顶部代码，感觉比较酷，比较炫，大概样式如下，

 

 代码如下：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery火箭图标返回顶部代码 - 站长素材</title>
<!--script src="js/jquery.js?v=1.83.min" type="text/javascript"></script-->
<script src="http://common.cnblogs.com/script/jquery.js?v=1.7.min" type="text/javascript"></script>

<style type="text/css">

body{height:3000px;}

/*回到顶部*/
#rocket-to-top div {
    left: 0;
    margin: 0;
    overflow: hidden;
    padding: 0;
    position: absolute;
    top: 0;
    width: 149px;
}
#rocket-to-top .level-2 {
    background: url("http://images.cnblogs.com/cnblogs_com/mq0036/508398/o_rocket_button_up.png") no-repeat scroll -149px 0 transparent;
    display: none;
    height: 250px;
    opacity: 0;
    z-index: 1;
}
#rocket-to-top .level-3 {
    background: none repeat scroll 0 0 transparent;
    cursor: pointer;
    display: block;
    height: 150px;
    z-index: 2;
}
#rocket-to-top {
    background: url("http://images.cnblogs.com/cnblogs_com/mq0036/508398/o_rocket_button_up.png") no-repeat scroll 0 0 transparent;
    cursor: default;
    display: block;
    height: 250px;
    margin: -125px 0 0;
    overflow: hidden;
    padding: 0;
    position: fixed;
    right: 0;
    top: 80%;
    width: 149px;
    z-index: 11;
}


    
</style>


<script type="text/javascript">

// jQuery火箭图标返回顶部代码

$(function() {
    var e = $("#rocket-to-top"),
    t = $(document).scrollTop(),
    n,
    r,
    i = !0;
    $(window).scroll(function() {
        var t = $(document).scrollTop();
        t == 0 ? e.css("background-position") == "0px 0px" ? e.fadeOut("slow") : i && (i = !1, $(".level-2").css("opacity", 1), e.delay(100).animate({
            marginTop: "-1000px"
        },
        "normal",
        function() {
            e.css({
                "margin-top": "-125px",
                display: "none"
            }),
            i = !0
        })) : e.fadeIn("slow")
    }),
    e.hover(function() {
        $(".level-2").stop(!0).animate({
            opacity: 1
        })
    },
    function() {
        $(".level-2").stop(!0).animate({
            opacity: 0
        })
    }),
    $(".level-3").click(function() {
        function t() {
            var t = e.css("background-position");
            if (e.css("display") == "none" || i == 0) {
                clearInterval(n),
                e.css("background-position", "0px 0px");
                return
            }
            switch (t){
            case "0px 0px":
                e.css("background-position", "-298px 0px");
                break;
            case "-298px 0px":
                e.css("background-position", "-447px 0px");
                break;
            case "-447px 0px":
                e.css("background-position", "-596px 0px");
                break;
            case "-596px 0px":
                e.css("background-position", "-745px 0px");
                break;
            case "-745px 0px":
                e.css("background-position", "-298px 0px");
            }
        }
        if (!i) return;
        n = setInterval(t, 50),
        $("html,body").animate({scrollTop: 0},"slow");
    });
});

</script>



</head>
<body>
<center>
<h2>jQuery火箭图标返回顶部代码</h2>
<h3>滚动滑动条后，查看右下角查看效果。很炫哦！！</h3>
</center>


<!-- 火箭 -->
<div style="display: none;" id="rocket-to-top">
    <div style="opacity:0;display: block;" class="level-2"></div>
    <div class="level-3"></div>
</div>


<div style="text-align:center;margin:50px 0; font:normal 14px/24px 'MicroSoft YaHei';">
<p>适用浏览器：IE8、360、FireFox、Chrome、Safari、Opera、傲游、搜狗、世界之窗.</p>
<p>来源：<a href="http://sc.chinaz.com/" target="_blank">站长素材</a></p>
</div>
</body>
</html>

我在本地测试使用的jQuery是1.8的，同样也可以使用1.7版本的

 

参考出处：http://sc.chinaz.com/jiaoben/140429325430.htm

posted on 2017-06-20 17:14  jack_Meng  阅读(2902)  评论(3)  编辑  收藏  举报

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