Generate A Random Unique Key React
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React keys are useful when working with dynamically created components or when your lists are altered by the users. Setting the key value will keep your components uniquely identified after the change.
Using Keys
Generate Random Text
Let's dynamically create Content elements with unique index (i). The map function will create three elements from our data array. Since the key value needs to be unique for every element, we will assign i as a key for each created element.
React Generate Guid
App.jsx
main.js
C# Generate Unique Random Number
We will get the following result for the Key values of each element.
React Generate Id
If we add or remove some elements in the future or change the order of the dynamically created elements, React will use the key values to keep track of each element.