Example: Check Array Using Array.isArray()
// program to check if an object is an array
function checkObject(arr) {
// check if arr is array
const result = Array.isArray(arr);
if(result) {
console.log(`[${arr}] is an array.`);
}
else {
console.log(`${arr} is not an array.`);
}
}
const array = [1, 2, 3];
// call the function
checkObject(array);
Output
[1,2,3] is an array.
In the above program, the Array.isArray()
method is used to check if an object is an array.
The Array.isArray()
method returns true
if an object is an array, otherwise returns false
.
Note: For an array, the typeof operator returns an object.
For example,
const arr = [1, 2, 3];
console.log(typeof arr); // object
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