<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>首页</title>
</head>
<script type="text/javascript" src="1/js/jquery-2.1.0.min.js"></script>
<body>
<input id="startTime" type="text" value="2018-08-22 10:00" />
<input id="endTime" type="text" value="2018-08-23 10:00:00" />
<script>
//把字符串格式转换为日期类
var startTime = new Date(Date.parse($("#startTime").val()));
var endTime = new Date(Date.parse($("#endTime").val()));
console.log(startTime+'<br />'+endTime)
if(startTime < endTime){
console.log('开始时间比结束时间小')
}else{
console.log('开始时间比结束时间大')
}
</script>
</body>
</html>