Because context was not made as an entire state management system. How to force ReactJS to re-render on every setState call ? An inline function is a function which is defined inside of the onClick handler when the React Component renders. + The Learn React app is an interactive learning experience designed to make you a confident React developer through 100s of fun challenges. Redirecting to https://legacy.reactjs.org/docs/components-and-props.html (308) If the event target does not contain the inner element, it means that the click event was not triggered within the inner element. Making statements based on opinion; back them up with references or personal experience. Once unpublished, all posts by igor_bykov will become hidden and only accessible to themselves. Example: Now write down the following code in the App.js file. Unflagging igor_bykov will restore default visibility to their posts. Clicking the button triggers an action from the child component to access the action of the parent (as a prop). Make sure you aren't calling the functionwhen you pass it to the component: render(){// Wrong: handleClick is called instead of passed as a reference!return<buttononClick={this.handleClick()}>Click Me</button>} To subscribe to this RSS feed, copy and paste this URL into your RSS reader. While the render method itself should primarily handle rendering JSX, there are scenarios where you may need to call a function inside the render method. Then, it loops through those names, rendering a list and button element for each value inside the array. The e.target.value is originating from the value attribute thats on the actual button element. Assuming you have the following markup in your application, and you want to close the inner element when you click the outer element: To handle clicks outside an element, you need to attach an event listener to the outer element. Most upvoted and relevant comments will be first. Use it to render, like this: The render() function accessed the data coming from the child component and stored it into the local component state. This example implements a straightforward page with two text inputs and one button. Or you might want to write an if statement inside of your SJX like this: But this doesn't work because an if statement isn't an expression. User data (the currently authenticated user), Location-specific data (like user language or locale). State gives your components memory! The above example shows how to access the function from the props directly using the onClick event. How to cycle through set amount of numbers and loop using geometry nodes? Which Netflix Subscription Plan Is Right for You? Then, when a click event occurs, access the event object and examine its target property. In this case, React just compares JSX (or text in this case). I met exactly the same bug yesterday, and fixed it by accident changing renders a unique elementwhich you can customize with props. Were going to cover the core concepts behind React: If you want to dig deeper, we encourage you to check out Reacts official documentation. However, depending on your apps file structure, you might need to use a different convention. Thank you for your valuable feedback! This may not be a performance issue in smaller apps with few state values that are not updated very often (such as theme data).