Essential JavaScript Development Techniques
Merging Duplicate Array Elements // Merge elements with duplicate prcdTermType and acctFnm properties mergeDuplicates(arr) { const result = []; const lookup = {}; arr.forEach(item => { const key = `${item.prcdTermType}-${item.acctFnm}`; if (lookup[key]) { lookup[key].pymtPrice = Number(lookup[ke...