Material Design Lite and jQuery, smooth scroll not working

Question

I am unable to use .animate method of jQuery with Google\'s Material Design Lite(MDL). I have used MDL to make navigation bar, but smooth scrolling was not working.

Answer 1

The reason you are not seeing anything happen is because you are scrolling on the body node. MDL handles the overflow within the mdl-layout__content, this is the element you should scroll on.

So this -

$("html, body").animate({scrollTop:position}, speed, "swing");

Now becomes-

$(".mdl-layout__content").animate({scrollTop:position}, speed, "swing");

Here's a codepen example - http://codepen.io/mdlhut/pen/BNeoVa

Answer 2

Mitsuhiko Shimomura helped me in a different stack-overflow question. Instead of var position = target.offset().top; I used var position = target.get( 0 ).offsetTop - 130; if not the scroll would go to top and throw off the position, it did not look good. I had to add - 130 to the .offsetTop because the smooth scroll was going past my target id's in the html. Thank you for the help! See my app where I used this smoothscroll feature.

And remember to add smooth class to anchors in html like this

<a class="smooth" href="#scrollToId">Target</a> 
<div id="scrollToId">Target</div>

$(function(){
  $('a.smooth').click(function(){
    console.log("SMOOTH BEGIN");
    var speed = 1000;
    var href= $(this).attr("href");
    var target = $(href == "#" || href == "" ? 'html' : href);
    var position = target.get( 0 ).offsetTop - 130;
    $(".mdl-layout__content").animate({scrollTop:position}, speed, "swing");
    console.log("SMOOTH END");
  });
});