AJAX requests should go in the componentDidMount lifecycle event.

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1. React lifecycle methods First of all, from a blog post in late March 2018, it was announced that the React lifecycle methods componentWillReceiveProps, componentWillMount, and componentWillUpdate will be deprecated in a future version of React. This is because of the eventual migration of React to async rendering; these lifecycle methods will become unreliable when async rendering is made default. In place of […]...
2. ComponentDidUpdate First of all, from a blog post in late March 2018, it was announced that the React lifecycle methods componentWillReceiveProps, componentWillMount, and componentWillUpdate will be deprecated in a future version of React. This is because of the eventual migration of React to async rendering; these lifecycle methods will become unreliable when async rendering is made default. Example of replacing componentWillUpdate with componentDidUpdate […]...
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4. ComponentWillMount componentWillMount is called before the render method is executed. It is important to note that setting the state in this phase WILL NOT TRIGGER a RE-RENDERING. componentWillMount(); setState() can be called here and won’t cause a rerender componentDidMount As soon as the render method has been executed the componentDidMount function is called. The DOM can be accessed […]...
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