Get Selected Radio Button Value - jQuery

Getting the value of a selected radio button using jQuery is straightforward. This is relevant even for Java/Spring Boot developers as jQuery often handles front-end interactions before data is sent to a Spring Boot backend. **Method:** Use the `:checked` selector to find the checked radio button within a group and then retrieve its value using the `val()` method. ```javascript let selectedValue = $('input[name="radioGroupName"]:checked').val(); console.log(selectedValue); ``` **Explanation:** * `$('input[name="radioGroupName"]')`: This selects all input elements with the name "radioGroupName" (replace with your actual radio button group name). * `:checked`: This filter selects only the checked radio button within that group. * `.val()`: This retrieves the value attribute of the selected radio button. **Example HTML:** ```html Option 1
Option 2
Option 3 ``` With this HTML, the JavaScript code above would log "option2" to the console. Remember to include jQuery in your project. Handle potential `undefined` values if no radio button is selected (e.g., using a conditional check). This client-side value can then be sent to your Spring Boot backend via AJAX for processing.