JS代码
function addListener(element, type, callback) {
if (element.addEventListener) {
element.addEventListener(type, callback);
} else if (element.attachEvent) {
element.attachEvent('on' + type, callback);
}
}
addListener(document, 'DOMContentLoaded', function () {
var mq = window.matchMedia("(max-width: 760px)");
if (mq.matches) {
document.getElementById("menu_list").classList.add("hidden");
}
addListener(document.getElementById("menu_button"), 'click', function () {
document.getElementById("menu_list").classList.toggle("hidden");
});
addListener(window, 'resize', function () {
var width = window.innerWidth ||
document.documentElement.clientWidth ||
document.body.clientWidth;
if (width > 760) {
document.getElementById("menu_list").classList.remove("hidden");
} else {
document.getElementById("menu_list").classList.add("hidden");
}
});
});
