Skip welcome & menu and move to editor
Welcome to JS Bin
File
Add library
Share
Login or Register
Blog
Help
Load cached copy from
  • Run with JS
  • Save
  • Share
  • …
 
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>
  <form id="form">
    <p>
      <input type="radio" value="one" name="setOne"> One<br />
      <input type="radio" value="two" name="setOne" checked> Two<br />
      <input type="radio" value="three" name="setOne"> Three
    </p>
​
</body>
</html>
 
​
 
let myForm = document.getElementById('form');
​
for (i = 0; i < myForm.setOne.length; i++) {
  if (myForm.setOne[i].checked === true) {
    console.log(myForm.setOne[i].value);
    // logs "two"
  }
}
​
console.log(myForm.setOne[1].defaultChecked); // true
​
myForm.setOne[1].checked = false;
console.log(myForm.setOne[1].defaultChecked); // true
​
myForm.setOne[0].checked = true;
console.log(myForm.setOne[0].defaultChecked); // false
​
for (i = 0; i < myForm.setOne.length; i++) {
  if (myForm.setOne[i].checked === true) {
    console.log(myForm.setOne[i].value);
    // now logs "one"
  }
}
​
for (i = 0; i < myForm.setOne.length; i++) {
  if (myForm.setOne[i].defaultChecked === true) {
    console.log(myForm.setOne[i].value);
    // still logs "two"
  }
}
​
myForm.setOne[0].defaultChecked = true;
console.log(myForm.setOne[0].defaultChecked); // true
console.log(myForm.setOne[1].defaultChecked); // oddly still logs true
Output

You can jump to the latest bin by adding /latest to your URL

Dismiss x
public
Bin info
ImpressiveWebspro
0viewers