js radio 取消选中

document.getElementById('myRadio').checked = false;

var radios = document.getElementsByName('myRadioGroup');
for (var i = 0; i < radios.length; i++) {
    radios[i].checked = false;
}

document.querySelectorAll('input[name="myRadioGroup"]').forEach(function(radio) {
    radio.addEventListener('click', function() {
        if (this.checked) {
            document.querySelectorAll('input[name="myRadioGroup"]').forEach(function(r) {
                r.checked = false;
            });
        }
    });
});

<form>
    <input type="radio" id="option1" name="myRadioGroup" value="option1">
    <label for="option1">Option 1</label><br>
    <input type="radio" id="option2" name="myRadioGroup" value="option2">
    <label for="option2">Option 2</label><br>
    <button type="button" onclick="deselectRadio()">Deselect</button>
</form>

function deselectRadio() {
    var radios = document.getElementsByName('myRadioGroup');
    for (var i = 0; i < radios.length; i++) {
        radios[i].checked = false;
    }
}