array.filter is returning entire object instead of just one value

I have a simple function that is filtering an array.

I only want the string value, not the entire object.

Why is the entire object coming back and not just the string?

I get the desired output if I switch the return to a console.log()

Any ideas?

Here is the code

 const Array2 = [
        { header: 'First name', HeaderIndex: 0},
        { header: 'Last name', HeaderIndex: 1},
        { header: 'Company', HeaderIndex: 2},
        { header: 'Favorite food', HeaderIndex: 3},
        { header: 'Favorite color', HeaderIndex: 4},
    ]

const testing = Array2.filter((obj) => { if(obj.HeaderIndex === 1) { return obj.header } } )

console.log(testing)

// gives undesired output

[{…}]
0: {header: 'Last name', HeaderIndex: 1}
length: 1
[[Prototype]]: Array(0)



const testing = Array2.filter((obj) => { if(obj.HeaderIndex === 1) { console.log(obj.header)} } )

// gives desired output

"Last name"

my problematic output is below, I just want to return the string

[{…}]
0: {header: 'Last name', HeaderIndex: 1}
length: 1
[[Prototype]]: Array(0)

Update*

I accepted the answer from Mayur because it solved my problem in a bigger use case. Here is my bigger use case below where I needed to merge these two arrays depending on Array1 index needing to match HeaderIndex from Array2

const Array1 = [ 
    ['Alex', 'Boe', 'MeowWolf', 'pizza', 'pink'],
    ['Arron', 'Coe', 'Kmart', 'tofu', 'purple'],
    ['Jane', 'Doe', 'Sears', 'tacos', 'orange'],
    ['John', 'Eoe', 'YugiOh', 'blueberries', 'magenta'],
    ['Suzie', 'Boe', 'Toyota', 'steroids', 'blue']
    ]
    
    
    const Array2 = [
        { header: 'First name', HeaderIndex: 0},
        { header: 'Last name', HeaderIndex: 1},
        { header: 'Company', HeaderIndex: 2},
        { header: 'Favorite food', HeaderIndex: 3},
        { header: 'Favorite color', HeaderIndex: 4},
    ]

const testResult = Array1.map((arr) => arr.map((string) => { return  {"ChosenHeader": Array2.filter((obj) => obj.HeaderIndex === arr.indexOf(string))[0]?.header, "content": string}} ))

console.log(testResult)


// desired output



0: {ChosenHeader: 'First name', content: 'Alex'}
1: {ChosenHeader: 'Last name', content: 'Boe'}
2: {ChosenHeader: 'Company', content: 'MeowWolf'}
3: {ChosenHeader: 'Favorite food', content: 'pizza'}
4: {ChosenHeader: 'Favorite color', content: 'pink'}

>Solution :

Because filter() always return an array. you want filter from return array. using [0].header You can do it !

Try this code it’s work

 const testing = Array2.filter((obj) => obj.HeaderIndex === 1)[0].header;
    console.log(testing, 'testing')