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JS 获得当前实时日期和时分秒星期 日期比较 当前日期格式化

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这些查API文档,一目了然,这是一个js获得当前实时日期和时分秒星期的脚本:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">  
<html xmlns="http://www.w3.org/1999/xhtml">  
<head>  
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />  
<title>无标题文档</title>  
<script language="javascript" type="text/javascript">  
window.onload=function getNowTime(){      
    //取得当前时间      
    var now= new Date();      
    var year=now.getFullYear();      
    var month=now.getMonth()+1;      
    var day=now.getDate();      
    var hour=now.getHours();      
    var minute=now.getMinutes();      
    var second=now.getSeconds();      
    var week=now.getDay();   
    var weekname="星期"+"天一二三四五六".split('')[week];   
    var nowdate=year+"-"+month+"-"+day+" "+hour+":"+minute+":"+second+" "+weekname;      
    document.getElementById("break_date").value = nowdate;      
    window.setTimeout("getNowTime()",1000);      
 }   
</script>  
</head>  
  
<body>  
<input type="text" id="break_date" size="30"/>  
</body>  
</html>  


日期比较1
var t_begin = new Date($("#t_begin").val().replace("-",",")).getTime() ;
	var t_end   = new Date( $("#t_end").val().replace("-",",")).getTime() ;
	if (t_begin > t_end) {
		alert("开始日期不得小于结束日期!");
		return false;
	}


日期比较2
function compareDate(DateOne,DateTwo){ 
	   if(DateOne==null || DateOne=="" || DateTwo==null || DateTwo==""){
	    return false;
	   }
	 var OneMonth = DateOne.substring(5,DateOne.lastIndexOf ("-"));
	 var OneDay = DateOne.substring(DateOne.length,DateOne.lastIndexOf ("-")+1);
	 var OneYear = DateOne.substring(0,DateOne.indexOf ("-"));

	 var TwoMonth = DateTwo.substring(5,DateTwo.lastIndexOf ("-"));
	 var TwoDay = DateTwo.substring(DateTwo.length,DateTwo.lastIndexOf ("-")+1);
	 var TwoYear = DateTwo.substring(0,DateTwo.indexOf ("-"));

	 if (Date.parse(OneMonth+"/"+OneDay+"/"+OneYear) >Date.parse(TwoMonth+"/"+TwoDay+"/"+TwoYear)){
	 return true;
	 }
	 else{
	 return false;
	 }

  }	 


返回当前时间
function GetDateT()
	{
	 var d,s;
	 d = new Date();
	 s = d.getYear() + "-";             //取年份
	 s = s + (d.getMonth() + 1) + "-";//取月份
	 s += d.getDate() + " ";         //取日期
	 return(s);  
	} 
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