[英]Custom JavaScript alert not stopping page from closing
頁面即將關閉時,我正在使用以下自定義警報。 問題在於,在用戶可以單擊自定義警報上的“確定”按鈕之前,警報會彈出並關閉頁面。 缺少的自定義警報是自定義警報,直到用戶單擊“確定”按鈕,它才能保持頁面打開狀態?
window.onbeforeunload = function() {
{
return custom_alert(head, txt);
}
function custom_alert(head, txt) {
var d = document;
var c_obj = d.getElementsByTagName("body")[0].appendChild(d.createElement("div"));
c_obj.id = "contain";
c_obj.style.height = d.documentElement.scrollHeight + "px";
var alertObj = c_obj.appendChild(d.createElement("div"));
alertObj.id = "alert";
if (d.all && !window.opera)
alertObj.style.top = document.documentElement.scrollTop + "px";
alertObj.style.left = (d.documentElement.scrollWidth - alertObj.offsetWidth) / 2 + "px";
alertObj.style.visiblity = "visible";
var h1 = alertObj.appendChild(d.createElement("h1"));
h1.appendChild(d.createTextNode(head));
var msg = alertObj.appendChild(d.createElement("p"));
msg.innerHTML = txt;
var btn = alertObj.appendChild(d.createElement("a"));
btn.id = "close";
btn.appendChild(d.createTextNode('ok'));
btn.focus();
btn.onclick = function() {
c_obj.parentNode.removeChild(c_obj);
};
alertObj.style.display = "block";
}
我找到了一個解決此問題的庫:
http://t4t5.github.io/sweetalert/
官方警報: alert("Oops... Something went wrong!");
更改后的警報: sweetAlert("Oops...", "Something went wrong!", "error");
該庫解決了創建您自己的警報的許多問題。
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