HTML DOM Location host 屬性

Location host 屬性返回/設定主機名和主機埠（如果已指定）。如果未明確指定，埠可能不會顯示。

語法

語法如下 −

返回值 host 屬性

location.host

值host 屬性設定

location.host = hostname:host

示例

我們來看看 Location host 屬性的一個示例 −

現場演示

<!DOCTYPE html>
<html>
<head>
<title>Location host</title>
<style>
   form {
      width:70%;
      margin: 0 auto;
      text-align: center;
   }
   * {
      padding: 2px;
      margin:5px;
   }
   input[type="button"] {
      border-radius: 10px;
   }
</style>
</head>
<body>
<form>
<fieldset>
<legend>Location-host</legend>
<label for="urlSelect">Current URL:</label>
<input type="url" size="27" id="urlSelect" value="https://www.example.com:2544">
<input type="button" onclick="getHostPort()" value="Get Port">
<div id="divDisplay"></div>
</fieldset>
</form>
<script>
   var divDisplay = document.getElementById("divDisplay");
   var urlSelect = document.getElementById("urlSelect");
   function getHostPort() {
      if(location.host.includes(':') === false)
         divDisplay.textContent = 'No port present, as host: '+location.host;
      else
         divDisplay.textContent = 'Port: '+location.host.split(":")[1]+', as host: '+location.host;
   }
</script>
</body>
</html>