格式化

accounting.formatNumber(5318008,2,",")
//=>"5,318,008.00"

十位前端显示两位

根据小数点后第三位四舍五入

accounting.toFixed(0.6141031155, 2);
//=>"0.61"
accounting.toFixed(0.6151031155, 2);
//=>"0.62"