apm/toTop.js at master · maimailu/apm · GitHub

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jQuery(document).ready(function ($) {
    if ($("meta[name=toTop]").attr("content") == "true") {
        $("<div id='toTop'><img src='toTop.png'></div>").appendTo('body');
        $("#toTop").css({
            width: '50px',
            height: '50px',
            bottom: '70px',
            right: '10px',
            position: 'fixed',
            cursor: 'pointer',
            zIndex: '999999',
        });
        if ($(this).scrollTop() == 0) {
            $("#toTop").hide();
        }
        $(window).scroll(function (event) {
            /* Act on the event */
            if ($(this).scrollTop() == 0) {
                $("#toTop").hide();
            }
            if ($(this).scrollTop() != 0) {
                $("#toTop").show();
            }
        });
        $("#toTop").click(function (event) {
            /* Act on the event */
            $("html,body").animate({
                    scrollTop: "0px"
                },
                666
            )
        });
    }
});