js遍历radio是否选中

// 假设你的单选按钮有相同的name属性，例如"name='choice'"
const radioButtons = document.querySelectorAll('input[name="choice"]');

let selectedValue = null;
radioButtons.forEach(radio => {
    if (radio.checked) {
        selectedValue = radio.value;
    }
});

console.log('选中的值是:', selectedValue);

const radioButtons = document.getElementsByName('choice');
let selectedValue = null;

for (let i = 0; i < radioButtons.length; i++) {
    if (radioButtons[i].checked) {
        selectedValue = radioButtons[i].value;
        break; // 找到选中的值后退出循环
    }
}

console.log('选中的值是:', selectedValue);

const radioButtons = document.getElementsByName('choice');
const selectedRadio = Array.from(radioButtons).find(radio => radio.checked);

console.log('选中的值是:', selectedRadio ? selectedRadio.value : null);