Javascript DOM Form Radio Button Checked
<html> <head> <script type = "text/JavaScript"> function checkAnswers()/*from w w w. jav a 2 s. c o m*/ { let myQuiz = document.getElementById( "myQuiz" ); // determine whether the answer is correct if ( myQuiz.elements[ 1 ].checked ) console.log( "Congratulations, your answer is correct" ); else // if the answer is incorrect console.log( "Your answer is incorrect. Please try again" ); } </script> </head> <body> <form id = "myQuiz" onsubmit = "checkAnswers()" action = ""> <p>Select the name of the tip that goes with the image shown:<br /> <img src="EPT.gif" alt="mystery tip"/> <br /> <input type = "radio" name = "radiobutton" value = "CPE" /> <label>Common Programming Error</label> <input type = "radio" name = "radiobutton" value = "EPT" /> <label>Error-Prevention Tip</label> <input type = "radio" name = "radiobutton" value = "PERF" /> <label>Performance Tip</label> <input type = "radio" name = "radiobutton" value = "PORT" /> <label>Portability Tip</label><br /> <input type = "submit" name = "submit" value = "Submit" /> <input type = "reset" name = "reset" value = "Reset" /> </p> </form> </body> </html>