html中a标签href过渡动画改写

 $('a').click(function(){
        var href = $(this).attr('href');
        if(!href || /^(javascript:)|#/.test(href)) return;
        window.location.href = href;
        loading();
        return false;
     });

    function loading() {
        $('body').html('加载中效果');
        return false;
    }