几个常用js代码

几个常用的js小段

 

1.回车控制

var keyc=window.event.keyCode;
if(keyc==13)
{
	//自己的操作
}

 

2.获得与数据库一样格式的时间串

function nowTime()
	{
		var now=new Date();

		var timeStr=now.getYear()+"-";
		if(now.getMonth()<9)
		{
			timeStr += "0"
			timeStr += now.getMonth()+1+"-";
		}else
		{
			timeStr += now.getMonth()+1+"-";
		}
		if(now.getDate()<10)
		{
			timeStr +="0"+now.getDate();
		}else
		{
			timeStr += now.getDate();
		}	
		if(now.getHours()-0<10)
		{
			timeStr +=" 0"+now.getHours();
		}else
		{
			timeStr +=" "+now.getHours();
		}
		if(now.getMinutes()-0<10)
		{
			timeStr +=":0"+now.getMinutes();
		}else
		{
			timeStr +=":"+now.getMinutes();
		}
		if(now.getSeconds()-0<10)
		{
			timeStr +=":0"+now.getSeconds()
		}else
		{
			timeStr +=":"+now.getSeconds()
		}
		return timeStr;
	}

 

3.全屏局中open

window.open("<c:url value='/"+url_+"'/>","","toolbar=0,location=0,scrollbars=1,resizable=1,width="+(screen.availWidth-20)+",height="+(screen.availHeight-30)+",top=0,left=0")

 

4.js对文字进行编码涉及3个函数：escape,encodeURI,encodeURIComponent，

相应3个解码数：unescape,decodeURI,decodeURIComponent

 

5.获得js对象的内容

var aaaa;
for(var a in obj)
{
  aaaa+=a+"  :  "+json[a]+"<br/>"
}
//document.write(aaaa);
//alert(aaaa);

 

6.iframe 内 调用外部方法 和 iframe外 调用iframe内的

//iframe中
window.parent.myMethod();

//iframe中
window.parent.setIframeDom(window);

//iframe外
var iframeObj;
function setIframeDom(obj)
{
	iframeObj=obj;
}

//例子
function exportToExcelO()
{
	iframeObj.exportToExcel();
}