Javascript in cshtml not needed

[mrdnote]

Hi, thanks for this example, works nicely!

One remark, there is not really a need for the javascript in _Host.cshtml if you change the constructor of InfiniteScroll to be parameterless and add an Init method to pass the element id and DotNetHelper:

this.Init = function (elementId, dotNetHelper) {
    this.element = document.getElementById(elementId);
    this.dotNetHelper = dotNetHelper;
}

and then instantiate the class in the bottom for the .js file:

window.ScrollList = new InfiniteScroll();

From there you can remove the code from Index.cshtml:

/* commented redunant code:
window.ScrollList = {
    Init: function (ele, ref) {
        window.ScrollList.ifs = new InfiniteScroll(ele, ref);
    },
    RemoveListener: function () {
        window.ScrollList.ifs.RemoveListener();
    }             
}
*/

[YaarPatandarAA]

class InfiniteScroll {
    constructor() {
        this.Init = function (elementId, dotNetHelper) {
            this.element = document.getElementById(elementId);
            this.DotNetHelper = dotNetHelper;
        }
        
        this.ListenToScroll = function (event,element,DotNetHelper) {
            var bounding = element.getBoundingClientRect();
            if (
                bounding.top >= 0 &&
                bounding.left >= 0 &&
                bounding.right <= (window.innerWidth || element.clientWidth) &&
                bounding.bottom <= (window.innerHeight || element.clientHeight)
            ) {
                console.log('In the viewport!');
                DotNetHelper.invokeMethodAsync("LoadMore");
            }
        };
        this.handler = (ev) => { this.ListenToScroll(ev, this.element, this.DotNetHelper) };

        document.addEventListener("scroll", this.handler, true);

        this.RemoveListener = function () {
            document.removeEventListener("scroll", this.handler, true);
            console.log('Listener removed!');
        }
    }
}

window.ScrollList = new InfiniteScroll();

Full InfiniteScroll.js, with the changes, if anyone wanted. Remember to remove code from _Host.cshtml.