iOS 10 Safari: Prevent scrolling behind a fixed overlay and maintain scroll position

Question

I\'m not able to prevent the main body content from scrolling while a fixed position overlay is showing. Similar questions have been asked many times, but all of the techniq

Answer 1

I found the code on github. It work on Safari in iOS 10,11,12

/* ScrollClass */
class ScrollClass {
constructor () {
    this.$body = $('body');

    this.styles = {
        disabled: {
            'height': '100%',
            'overflow': 'hidden',
        },

        enabled: {
            'height': '',
            'overflow': '',
        }
    };
}

disable ($element = $(window)) {
    let disabled = false;
    let scrollTop = window.pageYOffset;

    $element
        .on('scroll.disablescroll', (event) => {
            event.preventDefault();

            this.$body.css(this.styles.disabled);

            window.scrollTo(0, scrollTop);
            return false;
        })
        .on('touchstart.disablescroll', () => {
            disabled = true;
        })
        .on('touchmove.disablescroll', (event) => {
            if (disabled) {
                event.preventDefault();
            }
        })
        .on('touchend.disablescroll', () => {
            disabled = false;
        });
}

enable ($element = $(window)) {
    $element.off('.disablescroll');

    this.$body.css(this.styles.enabled);
}
}

use:

Scroll = new ScrollClass();

Scroll.disable();// disable scroll for $(window)

Scroll.disable($('element'));// disable scroll for $('element')

Scroll.enable();// enable scroll for $(window)

Scroll.enable($('element'));// enable scroll for $('element')

I hope it helps you.