Syntax error Merge arrays in column wise to another array in JavaScript

Merge arrays in column wise to another array in JavaScript

Suppose, we have three arrays of numbers like these −

const code = [123, 456, 789];
const year = [2013, 2014, 2015];
const period = [3, 4, 5];

We are required to write a JavaScript function that takes in three such arrays. The function should then construct an array of objects based on these three arrays like this −

const output = [
   {"code": 123, "year": 2013, "period": 3},
   {"code": 456, "year": 2014, "period": 4},
   {"code": 789, "year": 2015, "period": 5}
];

Example

The code for this will be −

const code = [123, 456, 789];
const year = [2013, 2014, 2015];
const period = [3, 4, 5];
const mergeColumnWise = (code = [], year = [], period = []) => {
   let results = [];
   for(let i = 0; i < code.length; i++) {
      results.push({
         code: code[i],
         year: year[i],
         period: period[i]
      });
   }
   return results;
};
console.log(mergeColumnWise(code, year, period));

Output

And the output in the console will be −

[
   { code: 123, year: 2013, period: 3 },
   { code: 456, year: 2014, period: 4 },
   { code: 789, year: 2015, period: 5 }
]
Updated on: 2020-11-20T13:43:15+05:30

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