Javascript -提交表单后在变量上加载选中的单选输入

<input type="radio" id="option1" name="radioOption" value="option1">
<label for="option1">选项1</label>

<input type="radio" id="option2" name="radioOption" value="option2">
<label for="option2">选项2</label>

var selectedOption = document.querySelector('input[name="radioOption"]:checked').value;

console.log("选中的单选值是：" + selectedOption);