我尝试使用 javascript 在简单的 HTML 页面中打开和关闭弹出窗口，但也许我缺少 JS 的基本知识。首先，我尝试声明全局变量 myPopupHandle。 但 myOpenWnd 中未填充帽子。这是代码也许有人可以帮忙。
<head>
<meta charset="utf-8">
<title>WndCloseTest</title>
</head>
<body>
<button type="button" onclick="myOpenWnd()">Open Popup Window</button>
<button type="button" onclick="myCloseWnd()">Close Popup Window</button>
<script type='text/javascript'>
let myPopUpHandle = null; // Always null
window.addEventListener("onunload", function(e) {
myCloseWnd();
});
function myCloseWnd() {
if (windowObjectReference != null)
windowObjectReference.close();
}
function myOpenWnd() {
const windowFeatures = "left=100,top=100,width=320,height=320";
/*
myPopUpHandle = window.open(
"https://www.mozilla.org/",
"mozillaWindow",
windowFeatures,
);
Don't work popUpHandle is null after this
*/
const handle = window.open(
"https://www.mozilla.org/",
"mozillaWindow",
windowFeatures,
);
if (!handle) {
console.log("his is likely caused by built-in popup blockers"); // logs the className of my_element
// The window wasn't allowed to open
// This is likely caused by built-in popup blockers.
// …
} else
window['windowObjectReference'] = handle;
}
</script>
</body>检查您的浏览器是否像您的评论所述阻止弹出窗口。