Anchor 平滑滚动

原代码出自 CSS-Tricks

$(function () {
    $('a[href*=#]:not([herf=#])').click(function(event) {
        if(location..pathname.replace(/^\//) == this.pathname.replace(/^\//) && location.hostname == this.hostname) {
            var target = $(this.hash);
            target = target.length ? target : $('[name=' + this.hash.slice(1) + ']');
            if (target.length) {
                $('html, body').animate({
                    scrollTop: target.offset().top
                }, 1000);
                return false;
            }
        }
    });
})