js单选框判断选中

<form id="myForm">
  <input type="radio" name="gender" value="male"> Male<br>
  <input type="radio" name="gender" value="female"> Female<br>
  <input type="radio" name="gender" value="other"> Other
</form>

function checkRadio() {
  var radios = document.getElementsByName('gender');

  for (var i = 0; i < radios.length; i++) {
    if (radios[i].checked) {
      console.log('Selected value: ' + radios[i].value);
      break;
    }
  }
}

// 调用函数
checkRadio();

function checkRadio() {
  var radios = document.getElementsByName('gender');
  var selectedValue = null;

  for (var i = 0; i < radios.length; i++) {
    if (radios[i].checked) {
      selectedValue = radios[i].value;
      break;
    }
  }

  if (selectedValue) {
    console.log('Selected value: ' + selectedValue);
  } else {
    console.log('No radio button selected');
  }
}