打开教材页重定向到pdf文件页面
// ==UserScript==
// @name 国家中小学智慧教育平台下载教材pdf
// @namespace http://tampermonkey.net/
// @version 1.21
// @description 打开教材页重定向到pdf文件页面
// @author Teng
// @match https://www.zxx.edu.cn/tchMaterial/*
// @icon https://www.zxx.edu.cn/favicon.ico
// @license MIT
// ==/UserScript==
(function() {
'use strict';
var window_width = window.innerWidth;
var download_btn = document.createElement('input')
download_btn.setAttribute('style',`position: fixed; z-index: 10000; left:${window.innerWidth/2}px;top:${window.innerHeight/2}px;height:36px;width:76px; border: 1px solid;`)
download_btn.setAttribute('type','button')
download_btn.setAttribute('id','download_btn')
download_btn.setAttribute('value','下载pdf')
download_btn.addEventListener('click',()=>{
if(performance.getEntriesByType('resource').filter(entry =>{return /.*pdf\.pdf/.test(entry.name);})[0]){
var pdf_url = performance.getEntriesByType('resource').filter(entry =>{return /.*pdf\.pdf/.test(entry.name);})[0].name;
var pdf_name = document.querySelector('h3').textContent
console.log(pdf_url);
let xhr = new XMLHttpRequest();
xhr.open('GET', pdf_url, true);
xhr.responseType = 'blob';
xhr.send()
xhr.onreadystatechange = function () {
if (xhr.readyState === 4 && xhr.status === 200) {
const aTag = document.createElement('a')
aTag.href = URL.createObjectURL(this.response)
aTag.download = `${pdf_name}.pdf`;
aTag.click()
}
}
window.alert('后台下载。。。')}else{window.alert('网页加载中，请等待2秒再试');}
})
document.body.append(download_btn)
})();