转载
//--------------------------这个页面是否在当前屏幕显示 function isShowing(){ 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('在当前页面'); //document.title = '欢迎回来'; }); }else{ // console.log('不在当前页面') //document.title = '你为什么要离开我'; } } document.addEventListener(visibilityChangeEvent, onVisibilityChange); }