JS保留2位小数 toFixed()

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JS保留2位小数 toFixed() 方法

var danjia = 47.41;
var shuliang = 5;
var zongjia = parseFloat(danjia)*parseFloat(shuliang);
zongjia = zongjia.toFixed(2);
alert(zongjia); //237.05

参考 https://www.jb51.net/article/134067.htm