How to use JavaScript Array isArray()

Array isArray() Method

Program to use JavaScript Array isArray() method

let a = [1,2,3,4,5];
    let b = Array.isArray(a);
    console.log(b);
    

Output

true
    

Steps Description

• Declare two variable a and b
• Initialize two variable a and b with value of array a = [1,2,3,4,5] and b = Array.isArray(a)
• Array isArray() method checks whether Array is or not and returns a boolean value.
• The value of b variable is displayed with the help of console.log inbuilt function

Array isArray() Method

Program to use JavaScript Array isArray() method

let c = 'Hello World';
    let d = Array.isArray(c);
    console.log(d);
    

Output

false
    

Steps Description

• Declare two variable c and d
• Initialize two variable c and d with value of string c = ‘Hello World’ and d = Array.isArray(c)
• Array isArray() method checks whether Array is or not and returns a boolean value.
• The value of d variable is displayed with the help of console.log inbuilt function