JavaScript 如何将UTC日期时间转换为本地日期时间

给定一个UTC日期，并需要使用JavaScript将其转换为本地日期时间 toLocaleString() 函数。

语法：

var theDate = new Date(Date.parse('DATE_IN_UTC'))
theDate.toLocaleString()

示例 1： 这个示例使用JavaScript将UTC日期时间转换为本地日期时间。

<body> 
    <h1 style="color:green;"> 
        GeekforGeeks 
    </h1> 
  
    <p> 
        Click the button to convert 
        UTC date and time to local 
        date and time 
    </p> 
  
    <p> 
        UTC date and time: 
        06/14/2020 4:41:48 PM 
    </p> 
  
    <button onclick="myGeeks()"> 
        Try it 
    </button> 
  
    <p id="demo"></p> 
  
    <script> 
        function myGeeks() { 
            var theDate = new Date(Date.parse( 
                '06/14/2020 4:41:48 PM UTC')); 
          
            document.getElementById("demo") 
                .innerHTML = "Local date Time: " 
                + theDate.toLocaleString(); 
        } 
    </script> 
</body>

输出：

JavaScript 如何将UTC日期时间转换为本地日期时间

示例2： 此示例使用JavaScript将今天的UTC日期时间转换为本地日期时间。

<body> 
    <h1 style="color:green;"> 
        GeekforGeeks 
    </h1> 
  
    <p> 
        Click the button to convert 
        UTC date and time to local 
        date and time 
    </p> 
  
    <p id="UTC_DATE"> 
        UTC date and time: 
        06/14/2020 4:41:48 PM 
    </p> 
  
    <button onclick="myGeeks()"> 
        Try it 
    </button> 
  
    <p id="demo"></p> 
  
    <script> 
        var theDate = new Date().toUTCString(); 
        document.getElementById("UTC_DATE").innerHTML = "UTC date and time: " 
                                                        + theDate 
        function myGeeks() { 
              
            var theDate = new Date().toLocaleString(); 
          
            document.getElementById("demo") 
                .innerHTML = "Local date Time: " 
                + theDate.toLocaleString(); 
        } 
    </script> 
</body>

输出：

JavaScript 如何将UTC日期时间转换为本地日期时间