找到 Math.min 行

我已经找到了 csv 文件中某一列的最低值，但我找不到哪一行存储该值。有人能帮助我吗？尽管我已经用谷歌搜索了很多天和网站，但无论如何我可以自己找到答案吗？提前致谢。

function getDataPointsFromCSV(csv) {
            var dataPoints = csvLines =   [];   
            var mini, a
            var minIndex = 0
            csvLines = csv.split(/[\r?\n|\r|\n]+/);
            for (var i = 1; i <= csvLines.length; i++)
                if (csvLines[i] > 0) {
                    points = csvLines[i].split(",");
//points instead of csvLines
                    mini = points[4]
                }
            var a = mini                
            for (var i = 1; i <= csvLines.length; i++)
                if (csvLines[i] < mini) {
                    points = csvLines[i].split(",");                    

                    minIndex = i
                    mini = csvLines[i]                                      
// Find lowest value in a column5(=points[4])( but how to find the row that store the lowest value, can someone help me please?)                
                    lowestv = Math.min(price, lowestv)
             }
// example; mini.length          
            for (var i = mini.length; i <= mini.length+10; i++)
                if (csvLines[i].length > 0) {
                    points = csvLines[i].split(",");
                    price = points[4]
            }
                dataPoints.push({x: new Date(),y: parseFloat(minIndex)});   
        return dataPoints;
        }

我提供了一个片段，它使用您评论中的示例数据：

const csv = "date,open,high,low,close\n31/10/2019,9202.457589,9383.160892,9028.71744,9199.584833\n30/10/2019,9422.463325,9426.874217,9085.370357,9205.726559\n29/10/2019,9248.440562,9516.181048,9232.648086,9427.687584\n28/10/2019,9565.101883,9805.118089,9256.148389,9256.148389"
const lines = csv.split(/[\r?\n|\r|\n]+/)
const header = lines.shift().split(',') // chop off header, and store it in a variable
const cells = lines.map(e => e.split(',').map(n => !isNaN(n) ? Number(n) : n))

// transpose the array, so it's easier to get min/max
// transposing (rows become columns and columns become rows)
// [[a, b],[c, d]] ==> [[a, c], [b, d]]
const transpose = cells[0].map((e, i) => {
  return cells.map(el => {
    return el[i]
  })
})
const dates = transpose.shift() // chop off dates, and store them in a variable

const rowRange = transpose.map((e, i) => {
  const min = Math.min(...e)
  const max = Math.max(...e)
  return {
    col: i + 1, // +1, because dates are chopped off
    colName: header[i + 1],
    max,
    maxRow: e.indexOf(max) + 1, // +1, because header is chopped off
    maxRowDate: dates[e.indexOf(max)],
    min,
    minRow: e.indexOf(min) + 1, // +1, because header is chopped off
    minRowDate: dates[e.indexOf(min)]
  }
})

console.log("result:", rowRange)

I added min AND max（以及其他一些属性），以便您可以在更多情况下使用它。

重要的提示

此解决方案会改变从 CSV 解析的数组。