// ==UserScript==
// @name         中国知网CNKI硕博论文PDF下载
// @version      0.1
// @description  add PDF download button to CNKI.
// @author       zgm1280
// @match        *://kns.cnki.net/KCMS/detail/detail.aspx?dbcode=CMFD*
// @match        *://kns.cnki.net/KCMS/detail/detail.aspx?dbcode=CDFD*
// @grant        none
// @namespace https://greasyfork.org/users/244539
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';
    window.onload = function(){
        var url = window.location.href;
        var dllink = document.getElementsByClassName('dllink');
        for (var i = dllink.length - 1; i >= 0; i--) {
            var nhdown = dllink[i].getElementsByTagName('a');
            var dl = nhdown[0].href.replace('dflag=nhdown','dflag=pdfdown')
            var a = document.createElement('a');
            a.className = "icon icon-dlGreen";
            a.innerText = "PDF下载";
            a.href = dl;
            document.getElementsByClassName('dllink')[i].appendChild(a);
        }
    };
})();