JS判断开始时间小于结束时间案例

一.html

预计入住时间:<input class="pub_textAlign_right" placeholder="例如，${memoDate }" type="text" name="preLiveInDate" id="preLiveInDate" maxlength="50" readonly="readonly">
预计离开时间:<input class="pub_textAlign_right" placeholder="（长期入住可不填）" type="text" name="preLeaveOutDate" id="preLeaveOutDate" maxlength="50" readonly="readonly">

二.js验证

function dateChange(){
    var endtime = $('#preLeaveOutDate').val();
	var starttime = $('#preLiveInDate').val();
	if(endtime!=""&&starttime!=""){
	    var start = new Date(starttime.replace("-", "/").replace("-", "/"));
	    var end = new Date(endtime.replace("-", "/").replace("-", "/"));
	    if(end < start){
	        alert("预计离开时间不能小于预计入住时间！");
	        $('#preLeaveOutDate').val("");
	        $('#preLiveInDate').val("");
	    }
	}
}