JavaScript | array.includes() function

The array.includes() is an inbuilt function in JavaScript which is used to know either a particular element is present in the array or not and accordingly, it returns true or false i.e, if the element is present, then it returns true otherwise false
Syntax:

array.includes(searchElement)

Parameter:
searchElement: It is the element which is searched.
Return Value:
It return a Boolean value i.e, either True or False.

Examples:

Input:
[1, 2, 3, 4, 5].includes(2);
Output:
true
Input:
[1, 2, 3, 4, 5].includes(9);
Output:
false

JavaScript code to show working of array.includes() function:
Code #1:

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<script>
  
    // Taking input as an array A
    // having some elements.
    var A = [ 1, 2, 3, 4, 5 ];
  
    // include() funcion is called to
    // test whether the searching element
    // is present in given array or not.
     a = A.includes(2)
  
    // Printing result of function.
    document.write(a);
</script>

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Output:


 true


Code #2:











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<script> 


   // Taking input as an array A 


   // having some elements. 


    var name = [ 'gfg', 'cse', 'geeks', 'portal' ]; 


  


   // include() funcion is called to 


   // test whether the searching element 


   // is present in given array or not. 


    a = name.includes('cat') 


  


    // Printing result of function 


    document.write(a); 


</script> 



















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Output:


 false



          
          
          
          

            

    

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