I am trying to merge two arrays on columns with similar data
I can get this to work if both arrays have the same length dimension, but how can I generalize my function to work if arrays have different lengths?
where either arrA or arrB could have the greater length
Thank you
what I get
[ [ 'age', 'AAA', 'name' ], [ 25, 'aaa', 'Alice' ], [ 30, 'bbb', 'Bob' ] ]what I want
[ [ 'age', 'AAA', 'name' ], [ 25, 'aaa', 'Alice' ], [ 30, 'bbb', 'Bob' ], [ 60, 'zzz', '' ] ]function mergeRowsLOOP_n() { const arrB = [ ["id", "name"], [1, "Alice"], [2, "Bob"], ]; const arrA = [ ["age", "ID", "AAA"], [25, 1, "aaa"], [30, 2, "bbb"], [60, 5, "zzz"] ]; let X = mergeRowsLOOP(arrA, arrB, "ID", "id"); console.log(X)}//a= array1, b=array2//aKey = Header for Matching of arra1, bKey = Header for Matching of arra2//bColumns indices of postback columns of array2; bColumns=[] to postback ALL array2 columnsfunction mergeRowsLOOP(a, b, aKey, bKey, bColumns = []) { const bIdx = b[0].findIndex(s => s.toLowerCase() === bKey.toLowerCase()); bColumns = (bColumns.length === 0) ? b : getColumns(b, [bIdx, ...bColumns]); const aIdx = a[0].findIndex(s => s.toLowerCase() === aKey.toLowerCase()), bColumnsIdx = bColumns[0].findIndex(s => s.toLowerCase() === bKey.toLowerCase()), mergedArray = []; console.log(bColumnsIdx) for (let rowA of a) { for (let rowB of bColumns) { if (rowA[aIdx].toString().toLowerCase() === rowB[bColumnsIdx].toString().toLowerCase()) { rowA = spliceNthPos(rowA, aIdx); rowB = spliceNthPos(rowB, bColumnsIdx); mergedArray.push(rowA.concat(rowB, )); } } }; return mergedArray;}function spliceNthPos(row, n) { let i = row.length; while (i--) { i === n && row.splice(i, 1); } return row;}