What’s the difference between forceUpdate vs render in ReactJS ?
render(): In React, the render() method is most important when you are working with a class Component. Without this method, a class component cannot return the value. All the HTML code is written inside the render() method. render() is a part of the React component lifecycle method. It is called at different app stages. E.g. When the component is first made or ready.
forceUpdate(): In React, when the props and state of the component are changed the component automatically re-render but when the component is dependent on some data other than state and props. In that situation forceUpdate is called to tell that component requires re-rendering. Calling forceUpdate() will forcibly re-render the component and thus calls the render() method on the component skipping the shouldComponentUpdate() method.
Difference between forceUpdate vs render:
This method is called in the following conditions:
|It will be called when some data changes other than state or props.|
|It does not skip any lifecycle method.||It skips the lifecycle shouldComponentUpdate method.|
|It is not user-callable.||It is called manually.|
|It automatically re-renders whenever required.||It re-render the component forcefully.|
|It is compulsory to use as it is the only required method in the Class component.||It is not recommended to use. It should be avoided.|