forceUpdate()

forceUpdate() method can be used to trigger a re-rendering whenever a value of some data/variable changes.

Note that re-render automatically triggers when a local state or a props (connected to store) data/variable changes

forceUpdate() can be used if you want to trigger a re-rendering when some value/data like a class level variable changes its value, but its use should be avoided.

You should avoid use of forceUpdate(). If you find yourself using forceUpdate(), you’re probably doing something wrong. For values for which a change should trigger a re-render, you should use local state or props-Redux store.