Question

How to get an array of one value from an array of objects in JavaScript

Answer 1

const arrobj = [
    {
        "programming language": "JavaScript",
        "fileextension": "js"
    },
    {
        "programming language": "TypeScript",
        "fileextension": "ts"
    },
    {
        "programming language": "C Plus Plus",
        "fileextension": "c++"
    }
];

const result = arrobj.map(item => item.fileextension);

console.log(result);

   
    
/*
run:
        
[ 'js', 'ts', 'c++' ]
        
*/

 

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Answer 2

const arrobj = [
    {
        "programming language": "JavaScript",
        "fileextension": "js"
    },
    {
        "programming language": "TypeScript",
        "fileextension": "ts"
    },
    {
        "programming language": "C Plus Plus",
        "fileextension": "c++"
    }
];

const result = arrobj.map(({ fileextension }) => fileextension);

console.log(result);

   
    
/*
run:
        
[ 'js', 'ts', 'c++' ]
        
*/

 

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