js封存2位小数

var ratioNow222 = (money-fastPriceOrRatio)/money;
var ratioNow = Number(ratioNow222.toFixed(2));
if( ratioNow > commissionMax )
{
	textFastPriceOrRatio.html("<font color='red'>价格设置不能超出佣金比率上限"+commissionMax+"！</font>");
	checkFastPriceOrRatio = false;
	return;
}
				
if( ratioNow < commissionMin )
{
	textFastPriceOrRatio.html("<font color='red'>价格设置不能低于佣金比率下限"+commissionMin+"！</font>");
	checkFastPriceOrRatio = false;
	return;
}

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###主要使用了Number(ratioNow222.toFixed(2));? 保留2位小数，转换成Number

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###其他方法：

<script>
    /*四舍五入*/
	var num=22.127456;
	alert( Math.round(num*100)/100);
	
	/*四舍五入*/
	var num=22.127456;
	alert( num.toFixed(2));

	/*非四舍五入，直接取两位*/
	var s = 22.127456 + "";
    var str = s.substring(0,s.indexOf(".") + 3);
    alert(str);

	/*非四舍五入，直接取两位*/
    var a = "23.456322";
    var aNew;
    var re = /([0-9]+\.[0-9]{2})[0-9]*/;
    aNew = a.replace(re,"$1");
    alert(aNew);
</script>

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