js脚本保留两位小数的方法

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方法一：

< script language = " javascript " >
     var  val  =   2.0489122 ;
    alert(Math.ceil(val * 100 ) / 100 );
</ script >

方法二：

< script language = " javascript " >
     var  val  =   2.0489122 ;
    alert(val.toFixed( 2 ));
</ script >