So, as we see, the displayed value does not change as expected. Now you can style it with css to look like a span element or whatever you want and you don't actually need to change the structure of the code. A guide to React refs: useRef and createRef. DOM API provides the focus() method to easily change the focus on a DOM element. We displayed the valueRef value in the render method by referencing current in the JSX braces. If you create a ref using createRefin a functional component, React will create a new instance of the ref on every re-render instead of keeping it between ren… Unfortunately this didn't make it work. Great article on the underpinnings and usage of useRef.

@DmitryDev yes, it doesn't work with span, but there are way how to achieve it, I posted my answer with another solution. The useRef Hook is a function that returns a mutable ref object whose .current property is initialized with the passed argument (initialValue). Using createRef in function components will throw no error, but it will result in inconsistencies. In input element we defined ref attribute by passing the nameRef so that we can access that input element by using nameRef.current property. Why is social engineering often exluded from bug bounties? But what happens if we rerender the element after changing the value stored in ref? This is because function components are functions, and them re-rendering or rendering is still running them like normal functions. Managing focus, text selection, or media playback. This is important because React.useRef can only be null, or the element object.

Just tested in. The magic of useRef is that it can be mutated without causing your component to re-update because the useRef value exists outside of the render cycle. Both React APIs are used to create a mutable object. To modify a child, you re-render it with new props. Select any of the other options and you will see your previous selection at the bottom.

useRef does not reinitialize its values every time a function component rerenders. Open source and radically transparent. How do I copy to the clipboard in JavaScript? Your email address will not be published. Why is that? We can only use createRef in class components. If you’ve worked with React for a while, you might be used to using refs for this purpose. Using the ref attribute in div#divR, we will assign the DOM instance of div#divR to divRef. Yeap, it works, for some reason it didn't work the first time. There is a reason for this, and we will discuss it in the next section. We have seen their uses, and they are the same. So, if you are someone who is confused by the differences between createRef and useRef, we brought this article for you.

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