JavaScriptは常に内蔵対象(二)

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JavaScript html

<script language="javascript">
          //    Date  
	var today = new Date();	
         alert(today);
         //         
	var todayStr = today.toString();
          alert(todayStr);
         //        
	var todayLocal = today.toLocaleString();
           alert(todayLocal);
         //      
	var date = today.getDate();
           alert(date);
         //       
	var day = today.getDay();
            alert(day);
         //  (0--11)  
   	var month = today.getMonth();
         alert(month);
         //    
	var year = today.getFullYear();
          alert(year);
</script>

一つの時計の例

<html>
	<head>
<script language="javascript">
		function startTime()
		{
		var today=new Date();
		var h=today.getHours();
		var m=today.getMinutes();
		var s=today.getSeconds();
		//     10         0
		m=checkTime(m);
		s=checkTime(s);
		document.getElementById('clock').innerHTML=h+":"+m+":"+s;
		//  500        startTime
		t=setTimeout('startTime()',500);
		}
		function checkTime(i)
		{
		if (i<10)
		  {
		  i="0" + i;
		  }
		return i;
		}
</script>
<body>
	<div id="clock"></div>
	<button value="    " onclick="startTime(); return false;">    </button>
</body>
</html>

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