How to prevent pull-down-to-refresh of mobile chrome

For latest versions of Chrome:

html,
body {
    overscroll-behavior-y: contain;
}

Old solution:

Since mobile Chrome >= 56 event listeners are passive by default and passive event listeners can't prevent defaults anymore. See here You have to use active event listeners instead like so:

document.addEventListener('touchstart', touchstartHandler, {passive: false});
document.addEventListener('touchmove', touchmoveHandler, {passive: false});

Try this.

body {
  /* Disables pull-to-refresh but allows overscroll glow effects. */
  overscroll-behavior-y: contain;
}

It worked well for me. I had weird scrolling issues due to other javascript hacks. Read this article for more details.

https://developers.google.com/web/updates/2017/11/overscroll-behavior

Scroll behavior none works for me like this.

body {
    overscroll-behavior: none 
}

The css-only answers posted here did not work for me. I ended up doing the following:

(function() {
    var touchStartHandler,
        touchMoveHandler,
        touchPoint;

    // Only needed for touch events on chrome.
    if ((window.chrome || navigator.userAgent.match("CriOS"))
        && "ontouchstart" in document.documentElement) {

        touchStartHandler = function() {
            // Only need to handle single-touch cases
            touchPoint = event.touches.length === 1 ? event.touches[0].clientY : null;
        };

        touchMoveHandler = function(event) {
            var newTouchPoint;

            // Only need to handle single-touch cases
            if (event.touches.length !== 1) {
                touchPoint = null;

                return;
            }

            // We only need to defaultPrevent when scrolling up
            newTouchPoint = event.touches[0].clientY;
            if (newTouchPoint > touchPoint) {
                event.preventDefault();
            }
            touchPoint = newTouchPoint;
        };

        document.addEventListener("touchstart", touchStartHandler, {
            passive: false
        });

        document.addEventListener("touchmove", touchMoveHandler, {
            passive: false
        });

    }
})();

For iOS I did the following for a single html page which expands to the size of the viewport. This solution doesn't allow any scrolling at all (which may not suit everyone, but worked well for me).

html, body {
    width: 100%;
    height: 100%;
    position: fixed;
    overflow: hidden;
}