值
一個字串。可能的值為 "open"（彈窗正在顯示）或 "closed"（彈窗正在隱藏）。
示例
js
const popover = document.getElementById("mypopover");
// …
popover.addEventListener("beforetoggle", (event) => {
if (event.newState === "open") {
console.log("Popover is being shown");
} else {
console.log("Popover is being hidden");
}
});
規範
| 規範 |
|---|
| HTML # dom-toggleevent-newstate |
瀏覽器相容性
載入中…