To convert JSON object to CSV format in JavaScript, we use some object and array methods.
For instance, we write
const convertToCSV = (arr) => {
const array = [Object.keys(arr[0])].concat(arr);
return array
.map((it) => {
return Object.values(it).toString();
})
.join("\n");
};
console.log(
convertToCSV([
{
id: 1,
name: "Foo",
timestamp: new Date(),
},
{
id: 2,
name: "Bar",
timestamp: new Date(),
},
{
id: 3,
name: "Baz",
timestamp: new Date(),
},
])
);
to define the convertToCSV function.
In it, we create an array from the property names of the first object in arr we get from Object.keys.
We then add the entries off arr to the end of it with concat.
Next, we call map with a callback to get the values of each object with Object.values and call toString to convert the array to a comma separated string.
Then we call join to join each row with a new line.
