JavaScript 页面切换后更改标题

JavaScript About 535 words

JS 监听 visibilitychange 事件

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>正在页面中</title>
</head>
<body>
</body>
<script type="text/javascript">
    document.addEventListener('visibilitychange',function () {
        if(document.visibilityState == 'hidden') {
            normal_title = document.title;
            document.title = "页面被切换了";
        }else {
            document.title = normal_title;
        }
    })
</script>
</html>
Views: 1,707 · Posted: 2019-04-08

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