HTML DOM Input Datetime value 属性

htmlweb developmentfront end technology更新于 2025/6/17 7:08:17

HTML DOM Input Datetime value 属性返回一个字符串，该字符串是输入日期时间值属性的值。用户也可以将其设置为新的字符串。

语法

以下是语法 −

返回字符串值

inputDatetimeObject.value

将 value 属性设置为字符串值

inputDatetimeObject.value = ‘String’

示例

让我们看一个 Input Datetime value 属性的示例 −

<!DOCTYPE html>
<html>
<head>
<title>Input Datetime Value</title>
</head>
<body>
<form>
<div>
Date & Time: <input type="datetime" id="datetimeSelect" value="2015-08-22T16:24Z">
</div>
</form>
<button onclick="changeValue()">Change Value</button>
<div id="divDisplay"></div>
<script>
   var divDisplay = document.getElementById("divDisplay");
   var inputDatetime = document.getElementById("datetimeSelect");
   divDisplay.textContent = 'Current value: '+ inputDatetime.value;
   function changeValue(){
      var currDatetime = inputDatetime.value;
      inputDatetime.value = '2017-03-17T16:24Z';
      divDisplay.textContent = 'Updated value from: '+currDatetime+' to: '+ inputDatetime.value;
   }
</script>
</body>
</html>