问题描述：

我正在使用此代码将滚动页面上的特定元素绑定。有没有可能改变滚动的速度？我试图使用“动画”，但没有工作。鼠标滚轮速度

(function() { 
    var delay = false; 

    $(document).on('mousewheel DOMMouseScroll', function(event) { 
    event.preventDefault(); 
    if(delay) return; 

    delay = true; 
    setTimeout(function(){delay = false},100) 

    var wd = event.originalEvent.wheelDelta || -event.originalEvent.detail; 

    var a= document.getElementsByTagName('section'); 
    if(wd < 0) { 
     for(var i = 0 ; i < a.length ; i++) { 
     var t = a[i].getClientRects()[0].top; 
     if(t >= 40) break; 
     } 
    } 
    else { 
     for(var i = a.length-1 ; i >= 0 ; i--) { 
     var t = a[i].getClientRects()[0].top; 
     if(t < -20) break; 
     } 
    } 
    $('html,body').animate({ 
     scrollTop: a[i].offsetTop 
    }); 
    }); 
})();

？ –

答

尝试按如下方式更新Animate方法。

$('html,body').animate({ 
    scrollTop: a[i].offsetTop 
}, 500);

很好，谢谢... –

答

使用Nicescroll插件

$(document).ready(function() {  
 
\t 
 
\t $("#divexample1").niceScroll(); 
 
\t 
 
    });

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> 
 

 
<script src="http://areaaperta.com/nicescroll/js/jquery.nicescroll.min.js"></script> 
 

 
<div class="txtblock"> 
 
<h1> Simple scrollable div</h1> 
 

 
<div id="divexample1"> 
 
    1 Fermat's conjecture (History)<br /> 
 
    2 Mathematical context<br /> 
 
    2.1 Pythagorean triples<br /> 
 
    2.2 Diophantine equations<br /> 
 
    3 Fermat's conjecture<br /> 
 
    4 Proofs for specific exponents<br /> 
 
    5 Sophie Germain<br /> 
 
    6 Ernst Kummer and the theory of ideals<br /> 
 
    7 Mordell conjecture<br /> 
 
    8 Rational exponents<br /> 
 
    9 Computational studies<br /> 
 
    10 Connection with elliptic curves<br /> 
 
    11 Wiles' general proof<br /> 
 
    12 Did Fermat possess a general proof?<br /> 
 
    13 Monetary prizes<br /> 
 
    14 In popular culture<br /> 
 
    15 See also<br /> 
 
    16 Notes<br /> 
 
    17 References<br /> 
 
    18 Bibliography<br /> 
 
    19 Further reading<br /> 
 
    20 External links 
 
    </div> 
 
</div>

要提高速度或减少其

鼠标滚轮速度

使用Nicescroll插件

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