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study-area-cn.old/theme/js/page.js

86 lines
2.9 KiB
JavaScript

if (window.innerWidth > 640) { // 自动展开导航栏
document.getElementById("toc-drawer").setAttribute('open', true);
}
function prevPage() {
var link = document.getElementById("helper_prevpage").href;
console.log("prev page:", link);
changePage(link);
}
function nextPage() {
var link = document.getElementById("helper_nextpage").href;
console.log("next page:", link);
changePage(link);
}
function setPage(url) { // 菜单跳转事件
if (url === "") {
return;
}
console.log("set page:", url);
changePage(url);
}
function changePage(url) {
// 加载图标
var nextbtn = document.getElementsByClassName("next—page")[0]
if (nextbtn != undefined) {
nextbtn.setAttribute("loading", "");
}
// 发送 XHR 动态更新
const xhr = new XMLHttpRequest();
xhr.onreadystatechange = () => {
if (xhr.readyState !== 4) return; // 加载失败
if ((xhr.status >= 200 && xhr.status < 300) || xhr.status === 304) {
// 滚动到顶部
document.documentElement.scrollTop = 0;
document.body.scrollTop = 0;
// 更新内容与翻页按钮
var old_tag = document.getElementsByClassName("mdui-prose")[0];
var old_topbar_tag = document.getElementsByClassName("navbtn")[0];
var old_navcard_tag = document.getElementsByClassName("navcard")[0];
var virtualtag = document.createElement('div');
virtualtag.insertAdjacentHTML('beforeend', xhr.responseText);
var title = virtualtag.getElementsByTagName("title")[0].innerText;
old_tag.innerHTML = virtualtag.getElementsByClassName("mdui-prose")[0].innerHTML;
old_topbar_tag.innerHTML = virtualtag.getElementsByClassName("navbtn")[0].innerHTML;
old_navcard_tag.innerHTML = virtualtag.getElementsByClassName("navcard")[0].innerHTML;
// 更新导航栏当前选择的内容
var elements = document.querySelectorAll('[active]');
elements.forEach(element => {
element.removeAttribute('active');
});
var elementshighliht = document.querySelectorAll('[search_link="' + url + '"]');
elementshighliht.forEach(element => {
element.setAttribute('active', "true");
});
// 清除临时标签
virtualtag.remove();
// 添加历史记录
history.pushState({ page: title }, title, url);
// 刷新高亮
hljs.highlightAll();
}
};
// 发送 XHR
xhr.open('GET', url, true);
xhr.send(null);
}
// 当回到上一页时
window.addEventListener('popstate', function (event) {
console.log('pop state:', window.location.protocol + "//" + window.location.host + location.pathname);
changePage(window.location.protocol + "//" + window.location.host + location.pathname);
});