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                ThinkChat2.0新版上線,更智能更精彩,支持會話、畫圖、視頻、閱讀、搜索等,送10W Token,即刻開啟你的AI之旅 廣告
                [TOC] > [參考](https://developer.mozilla.org/zh-CN/docs/Web/API/Page_Visibility_API) ## 概述 監聽頁面從前臺切到后臺,或從后臺切到前臺的狀態 ## demo ``` var visibilityChange; if (typeof document.hidden !== "undefined") { // Opera 12.10 and Firefox 18 and later support visibilityChange = "visibilitychange"; } else if (typeof document.msHidden !== "undefined") { visibilityChange = "msvisibilitychange"; } else if (typeof document.webkitHidden !== "undefined") { visibilityChange = "webkitvisibilitychange"; } document.addEventListener(visibilityChange,function (res) { if (document.hidden) { console.log("document.hidden" ,document.hidden); } else { console.log("document.show" ,document.hidden); } }) ```
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