Scrolling within a div without moving page

Question

I have a <div id="innerContent"> with overflow-y:scroll; . Links to anchors within innerContent are located on parent page, not in the div .

So far, I have tried anchors and scrollto's to attempt to scroll within the content. They both complete the scroll, but innerContent's height is larger than the browser window, so the entire parent page also scrolls to the anchor when the links are clicked.

Is there a way to do this with javascript, without moving the parent page? I do not have control over the height of the div - this is someone else's design.

This came close... but there isn't an answer here. How to automatic scroll inline div without scrolling the whole page?

Thank you!

Answer 1

This jsfiddle works in Chrome for me. Not tested in other browsers.

Catches the mousewheel event, uses the event data to scroll manually, then cancels the original event. Seems potentially messy for production.

$('#scroll').bind('mousewheel', function(e){

    $(this).scrollTop($(this).scrollTop()-e.originalEvent.wheelDeltaY);

    //prevent page fom scrolling
    return false;    
});

Answer 2

Use a fixed layout. In this jsfiddle I have a working example for it. Study the css. You don't need javascript for it.

Answer 3

Inspired by Morlem's code, but working the other way around: stop the propagation only if scrolling out. In pure JS:

container.addEventListener('mousewheel', function(e) {
    var scrollingOverTheTop = (e.wheelDelta > 0 && this.scrollTop == 0);
    var scrollingOverTheBottom = (e.wheelDelta < 0 && (this.scrollTop >= this.scrollHeight - this.offsetHeight));
    if (scrollingOverTheBottom || scrollingOverTheTop) {
        e.preventDefault();
        e.stopPropagation();
    }
}, true);

Answer 4

And if you do decide to use javascript (again, like KooiInc said, if you don't need js, don't use it), you can try using event.cancelBubble = true , which would prevent the event from propagating to the parent container so the page would not see your inner-div scrolling. Additional command you can use is event.preventDefault() , which prevents browser from triggering default behavior (ie scrolling) to the event.

Answer 5

I just solved my issue with this by creating the following in CSS:

body.scroll_locked {
    height: 100%;
    width: 100%;
    overflow: hidden;
}

Then, when I show my modal/lightbox, which is JavaScript (jQuery), I add the scroll_locked class to the body to lock it in place and remove the class to go back. Seems like you could do the same for a mouseenter/mouseleave event for a div that's always on the page and you want to have the same effect.

$('body').addClass('scroll_locked');
$('body').removeClass('scroll_locked');