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按alt + q 显示当前页面二维码，方便手机扫码访问
Fra
// ==UserScript==
// @name 显示二维码
// @version 0.2
// @description 按alt + q 显示当前页面二维码，方便手机扫码访问
// @author 编译小僵尸
// @match *://*/*
// @namespace https://greasyfork.org/users/85375
// ==/UserScript==
(function() {
var html = '<div id="showQRcodeJsCanvas" style="position:fixed;top:50%;left:50%;margin-left:-135px;margin-top:-135px;background-color:white;height:auto;padding:7px;">';
var colsefn = '';
document.onkeydown = function(e) {
// 设置监听按键
// alert(e.keyCode)
if (e.keyCode == 81 && e.altKey) {
if (!document.querySelector('#showQRcodeJs')) {
//添加script
var script = document.createElement("script");
script.setAttribute('src', '//cdn.rawgit.com/davidshimjs/qrcodejs/gh-pages/qrcode.min.js');
script.setAttribute('id', 'showQRcodeJsScript');
var heads = document.querySelectorAll("head");
if (heads.length) {
heads[0].appendChild(script);
} else {
document.documentElement.appendChild(script);
}
// 添加div
var div = document.createElement('div');
div.setAttribute('id', 'showQRcodeJs');
div.setAttribute('style', 'position:fixed;top:0;left:0;bottom:0;right:0;z-index:99999;background-color: rgba(0, 0, 0, 0.3);');
div.innerHTML = html;
document.body.appendChild(div);
// js加载完成
script.onload = function(){
new QRCode(document.querySelector("#showQRcodeJsCanvas"), window.location.href);
};
} else {
document.body.removeChild(document.querySelector('#showQRcodeJs'));
colse.removeEventListener("click", colsefn, false);
}
//添加监听
var colse = document.querySelector('#showQRcodeJs');
colse.addEventListener('click', colsefn = function() {
document.body.removeChild(document.querySelector('#showQRcodeJs'));
}, false);
}
};
})();