JavaScript Array.find 코드 모음

JavaScript Array.find 코드 모음

 

var array = ['cat', 'dog' , 'car']; 

var found = array.find(function (element) { 
    return element == 'dog'; 
}); 

document.write(found);  // return dog

 

var array = [10, 20, 30, 40];

var found = array.find(function (element) {
    return element > 10;  
});

document.write(found);  // return 20

const vehicles = [
    "car",
    "bus",
    "truck",
    "SUV"
];

const result = vehicles.find(tree => tree.startsWith("c"));

document.write(result) ;  // car

const vehicles = [
    { name: "car", count: 4 },
    { name: "bus", count: 5 },
    { name: "SUV", count: 2 }
];


const result = vehicles.find(vehicle => vehicle.name == 'SUV');

console.log(result);  // {name: "SUV", count: 2}

const vehicles = [
    { name: "car", count: 4 },
    { name: "bus", count: 5 },
    { name: "SUV", count: 2 }
];

const result = vehicles.find((vehicle, i) => {
    if (vehicle.count > 1 && i !== 0) return true;
});

console.log(result);  // {name: "bus", count: 5}

const students = [
    {name : 'hong' , score : '100'},
    {name : 'kim' , score : '60'},
    {name : 'seo' , score : '90'},
    {name : 'lee' , score : '80'},
    {name : 'jung' , score : '40'},
    {name : 'han' , score : '50'}
]

//50점 학생 찾기
{
    const student = students.find(student => student.score === '40');
    console.log(student);
}

//결과: {name: 'jung', score : '40'}

// 실제직업과 다릅니다.
const friends = [
  {
    name: '양주진',
    age: 32,
    job: '코인러',
    married: false,
  },
  {
    name: '오영제',
    age: 32,
    job: '랩퍼',
    married: false,
  },
  {
    name: '서준형',
    age: 32,
    job: '2년차 유부남',
    married: true,
  }
];

// 유부남 찾기
const findedSadGuy = friends.find((friend) => {
  return friend.married === true;
})

console.log('슬픈남자 ', findedSadGuy);



//결과=>
  {
    name: '서준형',
    age: 32,
    job: '2년차 유부남',
    married: true
  };

    // Input array contain some elements.
    var array = [-10, -0.20, 0.30, -40, -50];
  
    // Method (return element > 0).
    var found = array.find(function (element) {
        return element > 0;
    });
  
    // Printing desired values.
    console.log(found);
    
    //결과 => 0.3

    // Input array contain some elements.
    var array = [10, 20, 30, 40, 50];
  
    // Method (return element > 10).
    var found = array.find(function (element) {
        return element > 20;
    });
  
    // Printing desired values.
   console.log(found);
   
   //결과=> 30

    // Input array contain some elements.
    var array = [2, 7, 8, 9];
  
    // Provided testing method (return element > 4).
    var found = array.find(function (element) {
        return element > 4;
    });
  
    // Printing desired values.
    console.log(found);
    
    //결과=> 7

 

 

 

refreance: https://dev.to/askavy/array-find-method-in-javascript-kfd
refreance: JavaScript Array find() Method - GeeksforGeeks