Fetch alternative even values from a JavaScript array?

To fetch alternative values, use the array index and check with the following condition −

if(index%2==0) {
// code
}

The above will display the even values.

Example

Following is the code −

var subjectsName=["MySQL","JavaScript","MongoDB","C","C++","Java"];
for(let index=0;index<subjectsName.length;index++)
{
   if(index%2==0)
   console.log("Subject name at even position="+subjectsName[index]);
}

To run the above program, you need to use the following command −

node fileName.js.

Here, my file name is demo222.js.

Output

The output is as follows −

PS C:\Users\Amit\JavaScript-code> node demo222.js
Subject name at even position=MySQL
Subject name at even position=MongoDB
Subject name at even position=C++