Method 1: Overriding the window.onscroll function
The window.onscroll event fires when the window has been scrolled. Overriding this function and setting it to a fixed position every time the scroll happens will effectively disable the scroll effect.
The current scroll position from the top is found by using the window.pageYOffset and the document.documentElement.scrollTop values. These 2 properties returns the current y scroll position. They are used together using the OR operator as one of them may return 0 on certain browsers.
Similarly, the current scroll position from the left is found by using the window.pageXOffset and the document.documentElement.scrollLeft values. These 2 properties returns the current x scroll position.
The window.scrollTo() method is then used with these 2 values to set the scroll position of the current page to that value.
To enable the scrolling back, window.onscroll is overridden with a blank function. This will enable the scrolling of the page again.
Example: Overriding the window.onscroll function
Method 2: Setting the height of the body to 100% and overflow to hidden
In this method, a new CSS class is created where the height is set to 100% and the scroll bar is disabled by setting the overflow property to hidden.
Whenever scrolling has to be disabled, this class is added to the body using the document.body.classList.add(“classname”) method. This method adds the specified class name to the body element’s class list.
To enable the scrolling back, this class is removed from the body using the document.body.classList.remove(“classname”) method. This method removes the specified class name to the body element’s class list. This will enable the scrolling of the page again.
Example: Setting the height of the body to 100% and overflow to hidden
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