[JavaScript] HTMLのチェックボックスをまとめて設定

CheckboxGroup.js

function setCheckboxGroup(className, isOn) {
	var elements = document.getElementsByTagName("input");
	for (var i = 0; i < elements.length; i++) {
		var elem = elements[i];
		if (elem.className === className) {
			elem.checked = isOn;
		}
	}
}