根据https://sweetalert2.github.io/，我从https://www.jsdelivr.com/package/npm/sweetalert2下载了sweetalert2.all.min.js的副本。由于在back.html中，由于Chrome扩展程序，我无法使用该网址，而是使用本地副本。这是我的background.html
<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<title></title>
</head>
<body>
<script type="module" src="sweetalert2.all.min.js"></script>
<script type="module" src="background.js"></script>
</body>
</html>我尝试在background.js中使用SweetAlert2，它位于：
chrome.runtime.onMessage.addListener(
function(request, sender, sendResponse) {
console.log("request=" + request);
var notificationType
if (request.charAt(request.length - 1) == 'N')
notificationType = request.substring(0, request.length - 1) + " notes!";
if (request.charAt(request.length - 1) == 'W')
notificationType = request.substring(0, request.length - 1) + " watches!";
if (request.charAt(request.length - 1) == 'C')
notificationType = request.substring(0, request.length - 1) + " comments!";
Swal.fire("Incoming!", "You\'ve got " + notificationType, "info");但我收到this error in Chrome Extension:“Uncaught TypeError：无法设置未定义的属性'Sweetalert2'”它显示我下载的sweetalert2.all.min.js中的代码。
以下是我的Chrome扩展程序的其他重要部分
表现：
{
"name": "Notifier",
"version": "1.0",
"description": "Notifies you when you get an FA notification!",
"manifest_version": 2,
"background": {
"page": "background.html",
"persistent": false
},
"permissions": [
"activeTab",
"notifications"
],
"browser_action": {
"default_popup": "popup.html",
"default_icon": {
"16": "FA icon.png"
}
},
"icons": {
"16": "FA icon.png"
},
"content_scripts": [
{
"matches": ["http://*.website.net/*"],
"js": ["sweetalert2.all.min.js","jquery-3.3.1.min.js","contentScript.js"]
}
]
}
和contentScript.js：
if ($('a[title="Note Notifications"]').length) {
chrome.runtime.sendMessage($('a[title="Note Notifications"]').text());
}
if ($('a[title="Comment Notifications"]').length) {
chrome.runtime.sendMessage($('a[title="Comment Notifications"]').text());
}
if ($('a[title="Watch Notifications"]').length) {
chrome.runtime.sendMessage($('a[title="Watch Notifications"]').text());
}
setTimeout(function() {
window.location.reload(1);
}, 30 * 1000);它是因为html代码中的module属性
我相信有人会解释为什么我不是一个专家
我测试了这个并且它有效：
<script src="sweetalert2.all.min.js"></script>