Prevent scrolling using CSS on React rendered components
So I render a component via React within my html like so:
${appHtml}
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"I have no control over toggling classes based on a click within a react component."
Not necessarily true!
It's good that you're thinking in a "React-ful" way and wary about modifying the DOM. The main reason you want to avoid doing DOM manipulation is because it causes conflicts between what React is trying to render and the unknown changes you might be trying to make. But in this case you're not manipulating the DOM that React is rendering, you're manipulating its parent. In that case you would be totally fine doing something like this:
document.body.style.overflow = "hidden"Or
document.body.classList.add("no-sroll")Or whatever works. You're totally safe because React only renders the DOM within
#appand doesn't care about what happens in its parent. In fact many apps and websites use React in only a small part of the page, to render a single component or widget, instead of an entire app.That aside, there is an even better, more "React-ful" way to do what you want. Simply restructure your app in such a way that the scrolling container is within your React app instead of
body. The structure might look something like this:<html> <body> <div id="app"> <div id="scroll-container"> <!-- the rest of your app --> </div> </div> </body> </html>Make
bodyoverflow hidden, andbodyand#appfill the entire screen, and you can control whether#scroll-containerallows scrolling or not entirely within React.讨论(0) -
The above doesn't work for iOS mobile.
body-scroll-lock uses a combination of CSS and JS to make it work for all devices, whilst maintaining scrollability of a target element (eg. modal).
ie. for iOS, need to detect when the bottom or top of a target element is reached, and then stop scrolling completely
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