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Converting object to 2-D array in JavaScript
Suppose we have an object that contains information about the weather of a city −
const obj = {
city: "New Delhi",
maxTemp: 32,
minTemp: 21,
humidity: 78,
aqi: 456,
day: 'Tuesday',
};We are required to write a JavaScript function that takes in one such object. The function should construct an array of arrays based on this object where each subarray contains exactly two properties −
the corresponding key
that key's value
Therefore, for the above object, the output should look like −
const output = [ [ 'city', 'New Delhi' ], [ 'maxTemp', 32 ], [ 'minTemp', 21 ], [ 'humidity', 78 ], [ 'aqi', 456 ], [ 'day', 'Tuesday' ] ];
Example
Following is the code −
const obj = {
city: "New Delhi",
maxTemp: 32,
minTemp: 21,
humidity: 78,
aqi: 456,
day: 'Tuesday',
};
const objectToArray = (obj = {}) => {
const res = [];
const keys = Object.keys(obj);
for(key of keys){
res.push([
key, obj[key]
]);
};
return res;
};
console.log(objectToArray(obj));Output
Following is the output on console −
[ [ 'city', 'New Delhi' ], [ 'maxTemp', 32 ], [ 'minTemp', 21 ], [ 'humidity', 78 ], [ 'aqi', 456 ], [ 'day', 'Tuesday' ] ];
Updated on: 10-Dec-2020
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