var hiddenProperty = 'hidden' in document ? 'hidden' : 'webkitHidden' in document ? 'webkitHidden' :
'mozHidden' in document ? 'mozHidden' :
null;
var visibilityChangeEvent = hiddenProperty.replace(/hidden/i, 'visibilitychange');
var onVisibilityChange = function(){
if (!document[hiddenProperty]) {
console.log('页面非激活');
}else{
console.log('页面激活')
}
}
document.addEventListener(visibilityChangeEvent, onVisibilityChange);
判断当前tab页是否处于活动状态focus
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转载自blog.csdn.net/weixin_41224029/article/details/90211959
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