js combine 2 array to object key value
var columns = ["Date", "Number", "Size", "Location", "Age"];
var rows = ["2001", "5", "Big", "Sydney", "25"];
var result = rows.reduce(function(result, field, index) {
result[columns[index]] = field;
return result;
}, {})
console.log(result);merge 2 dictionaries with same keys javascript
const target = { a: [1], b: [2] };
const source = { a: [2], c: [5] };
const returnedTarget = Object.assign(target, source);
for(var date in source)
target[date] = [...target[date] || [],...source[date]]
console.log(target);Copyright © 2021 Codeinu
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