如何计算“入住日期”和“退房日期”之间的天数？

时间：2016-11-09 10:41:58

标签： javascript html html5 forms datepicker

我正在试图弄清楚如何计算用户输入登记日期和退房日期之间的天数。我需要通过他们选择的房间选择来获取该数字并将其倍增，以获得他们逗留的总成本并将其显示在屏幕上的某个位置。

我不完全确定如何计算天数，但是为了获得房间的成本，我需要为每种类型的房间分配一个id并为其分配一个数值而不是我当前的设置现在？或者你如何为每个房间的选择分配一个值？

<script>
			function check() {
				if(document.getElementById('checkin').value > document.getElementById('checkout').value)
					{ 
						alert("Check-out date must be after check-in date!")
				}
			}
			
			//function result() {
				//document.getElementById('standard').value * 
			//}
</script>

	<body>
  	  <form>
	  <fieldset>
	  <legend>test</legend>
			First Name: <br>
			<input type="text" name="firstname" size="45" pattern="[A-Za-z]+" title="Alphabet characters only." required>
			<br><br>
			Last Name: <br>
			<input type="text" name="lastname" size="45" pattern="[A-Za-z]+" title="Alphabet characters only." required>
			<br><br>
			Street Address: <br>
			<input type="text" name="street" size="45" pattern="[A-Za-z0-9 ]+" title="Alphabet characters and numbers only." required>
			<br><br>
			City: <br>
			<input type="text" name="city" size="45" pattern="[A-Za-z ]+" title="Alphabet characters only." required>
			<br><br>
			State: <br>
			<input list="states" name="state" size="45" required>
				  <datalist id="states">
						<option value="AL">Alabama</option>
						<option value="AK">Alaska</option>
						<option value="AZ">Arizona</option>
						<option value="AR">Arkansas</option>
						<option value="CA">California</option>
						<option value="CO">Colorado</option>
						<option value="CT">Connecticut</option>
						<option value="DE">Delaware</option>
						<option value="FL">Florida</option>
						<option value="GA">Georgia</option>
						<option value="HI">Hawaii</option>
						<option value="ID">Idaho</option>
						<option value="IL">Illinois</option>
						<option value="IN">Indiana</option>
						<option value="IA">Iowa</option>
						<option value="KS">Kansas</option>
						<option value="KY">Kentucky</option>
						<option value="LA">Louisiana</option>
						<option value="ME">Maine</option>
						<option value="MD">Maryland</option>
						<option value="MA">Massachusetts</option>
						<option value="MI">Michigan</option>
						<option value="MN">Minnesota</option>
						<option value="MS">Mississippi</option>
						<option value="MO">Missouri</option>
						<option value="MT">Montana</option>
						<option value="NE">Nebraska</option>
						<option value="NV">Nevada</option>
						<option value="NH">New Hampshire</option>
						<option value="NJ">New Jersey</option>
						<option value="NM">New Mexico</option>
						<option value="NY">New York</option>
						<option value="NC">North Carolina</option>
						<option value="ND">North Dakota</option>
						<option value="OH">Ohio</option>
						<option value="OK">Oklahoma</option>
						<option value="OR">Oregon</option>
						<option value="PA">Pennsylvania</option>
						<option value="RI">Rhode Island</option>
						<option value="SC">South Carolina</option>
						<option value="SD">South Dakota</option>
						<option value="TN">Tennessee</option>
						<option value="TX">Texas</option>
						<option value="UT">Utah</option>
						<option value="VT">Vermont</option>
						<option value="VA">Virginia</option>
						<option value="WA">Washington</option>
						<option value="WV">West Virginia</option>
						<option value="WI">Wisconsin</option>
						<option value="WY">Wyoming</option>
					</datalist>
			<br><br>
			Zip Code: <br>
			<input type="text" name="zipcode" size="45" pattern="[0-9]+" title="Numbers only." required>
			<br><br>
			Phone Number: <br>
			<input type="text" name="phone" size="45" pattern="[0-9-]+" title="Numbers only." required>
			<br><br>
			E-mail: <br>
			<input type="email" name="email" size="45" pattern="[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,3}$" required>
			<br><br>
			Check-In Date:<br>
			<input type="date" id="checkin" name="checkin" required>
			<br><br>
			Check-Out Date:<br>
			<input type="date" id="checkout" name="checkout" required>
			<br><br>
			Room:<br>
			<input list="rooms" name="room" size="16" required>
				<datalist id="rooms">
					<option value="Standard ($50/night)">
					<option value="Queen ($75/night)">
					<option value="King ($100/night)">
					<option value="Business ($125/night)">
					<option value="Deluxe Suite ($150/night)">
				</datalist>
			<br><br>
			<button type="submit" onclick="check()">Submit</button>
			</fieldset>
	  </form>
</body>

1 个答案:

答案 0 :(得分：3)

<script>
function check() {
  var date1 = new Date(document.getElementById('checkin').value);
  var date2 = new Date(document.getElementById('checkout').value);
  var diff = Math.abs(date2.getTime() - date1.getTime());
  var noofdays = Math.ceil(diff / (1000 * 3600 * 24));  
  if(date1  > date2){ 
	alert("Check-out date must be after check-in date!")
  }
  else {
    alert(noofdays);
  }
}		
</script>
<body>
  <form>
	<fieldset>
	  <legend>test</legend>
			First Name: <br>
			<input type="text" name="firstname" size="45" pattern="[A-Za-z]+" title="Alphabet characters only." required>
			<br><br>
			Last Name: <br>
			<input type="text" name="lastname" size="45" pattern="[A-Za-z]+" title="Alphabet characters only." required>
			<br><br>
			Street Address: <br>
			<input type="text" name="street" size="45" pattern="[A-Za-z0-9 ]+" title="Alphabet characters and numbers only." required>
			<br><br>
			City: <br>
			<input type="text" name="city" size="45" pattern="[A-Za-z ]+" title="Alphabet characters only." required>
			<br><br>
			State: <br>
			<input list="states" name="state" size="45" required>
				  <datalist id="states">
						<option value="AL">Alabama</option>
						<option value="AK">Alaska</option>
						<option value="AZ">Arizona</option>
						<option value="AR">Arkansas</option>
						<option value="CA">California</option>
						<option value="CO">Colorado</option>
						<option value="CT">Connecticut</option>
						<option value="DE">Delaware</option>
						<option value="FL">Florida</option>
						<option value="GA">Georgia</option>
						<option value="HI">Hawaii</option>
						<option value="ID">Idaho</option>
						<option value="IL">Illinois</option>
						<option value="IN">Indiana</option>
						<option value="IA">Iowa</option>
						<option value="KS">Kansas</option>
						<option value="KY">Kentucky</option>
						<option value="LA">Louisiana</option>
						<option value="ME">Maine</option>
						<option value="MD">Maryland</option>
						<option value="MA">Massachusetts</option>
						<option value="MI">Michigan</option>
						<option value="MN">Minnesota</option>
						<option value="MS">Mississippi</option>
						<option value="MO">Missouri</option>
						<option value="MT">Montana</option>
						<option value="NE">Nebraska</option>
						<option value="NV">Nevada</option>
						<option value="NH">New Hampshire</option>
						<option value="NJ">New Jersey</option>
						<option value="NM">New Mexico</option>
						<option value="NY">New York</option>
						<option value="NC">North Carolina</option>
						<option value="ND">North Dakota</option>
						<option value="OH">Ohio</option>
						<option value="OK">Oklahoma</option>
						<option value="OR">Oregon</option>
						<option value="PA">Pennsylvania</option>
						<option value="RI">Rhode Island</option>
						<option value="SC">South Carolina</option>
						<option value="SD">South Dakota</option>
						<option value="TN">Tennessee</option>
						<option value="TX">Texas</option>
						<option value="UT">Utah</option>
						<option value="VT">Vermont</option>
						<option value="VA">Virginia</option>
						<option value="WA">Washington</option>
						<option value="WV">West Virginia</option>
						<option value="WI">Wisconsin</option>
						<option value="WY">Wyoming</option>
					</datalist>
			<br><br>
			Zip Code: <br>
			<input type="text" name="zipcode" size="45" pattern="[0-9]+" title="Numbers only." required>
			<br><br>
			Phone Number: <br>
			<input type="text" name="phone" size="45" pattern="[0-9-]+" title="Numbers only." required>
			<br><br>
			E-mail: <br>
			<input type="email" name="email" size="45" pattern="[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,3}$" required>
			<br><br>
			Check-In Date:<br>
			<input type="date" id="checkin" name="checkin" required>
			<br><br>
			Check-Out Date:<br>
			<input type="date" id="checkout" name="checkout" required>
			<br><br>
			Room:<br>
			<input list="rooms" name="room" size="16" required>
				<datalist id="rooms">
					<option value="Standard ($50/night)">
					<option value="Queen ($75/night)">
					<option value="King ($100/night)">
					<option value="Business ($125/night)">
					<option value="Deluxe Suite ($150/night)">
				</datalist>
			<br><br>
			<button type="submit" onclick="check()">Submit</button>
			</fieldset>
	  </form>
</body>

相关问题
最新问题