React Js Radio Button Default Checked
React Js Radio Button Default Checked: In React, a radio button can be pre-selected or "default checked" by passing the checked prop to the input element with a value of true. This prop is used to control the state of the radio button, ensuring that it is checked when the component is first rendered.
When a user interacts with the radio button, its state will change based on their selection. By default, only one radio button in a group can be selected at a time, making it useful for choosing between multiple options.
To handle the state changes and make the radio button functional, a developer would typically write an event handler that updates the state of the component and re-renders it with the new state. This allows the user interface to respond dynamically to user actions
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What is the syntax for setting a default checked value for a radio button in React JS?
This is a React.js code snippet for creating a radio button group with a default checked/selected value. The default selected value is set using the useState hook with the initial value of "Tablet".
The options array contains the list of values for the radio buttons. The selectedValue variable is used to store the currently selected value. The handleOptionChange function is used to update the selectedValue variable whenever the user selects a different radio button.
The radio button group is created using the map function to iterate over the options array. For each option, a label and an input element are created with the id, value, checked, and onChange attributes set appropriately. The checked attribute is set to true for the radio button that matches the selectedValue.
Finally, the selectedValue variable is displayed in a pre tag to show the current selected value.
Output of React Js Radio Button Default Checked
