//新浪微博
function relativeTime(dateString) { var values = dateString.split(" "); dateString = values[1] + " " + values[2] + ", " + values[5] + " " + values[3]; var parsed_date = Date.parse(dateString); var relative_to = (arguments.length > 1) ? arguments[1] : new Date(); var delta = parseInt((relative_to.getTime() - parsed_date) / 1000); delta = delta + (relative_to.getTimezoneOffset() * 60); if (delta < 60) { return 'just now'; } else if (delta < 120) { return 'a minute ago'; } else if (delta < (60 * 60)) { return (parseInt(delta / 60)).toString() + ' minutes ago'; } else if (delta < (120 * 60)) { return 'about an hour ago'; } else if (delta < (24 * 60 * 60)) { return 'about ' + (parseInt(delta / 3600)).toString() + ' hours ago'; } else if (delta < (48 * 60 * 60)) { return '1 day ago'; } else { return (parseInt(delta / 86400)).toString() + ' days ago'; }}淡入淡出效果: