Answers for "js loop thru object"

85

javascript loop through object

Object.entries(obj).forEach(
    ([key, value]) => console.log(key, value)
);
Posted by: Guest on February-15-2020
2

how to loop object javascript

var obj = {a: 1, b: 2, c: 3};

for (const prop in obj) {
  console.log(`obj.${prop} = ${obj[prop]}`);
}

// Salida:
// "obj.a = 1"
// "obj.b = 2"
// "obj.c = 3"
Posted by: Guest on May-15-2020
2

javascript for loop on object

/Example 1: Loop Through Object Using for...in
// program to loop through an object using for...in loop

const student = { 
    name: 'John',
    age: 20,
    hobbies: ['reading', 'games', 'coding'],
};

// using for...in
for (let key in student) { 
    let value;

    // get the value
    value = student[key];

    console.log(key + " - " +  value); 
} 

/Output
	name - John
	age - 20
	hobbies - ["reading", "games", "coding"]

//If you want, you can only loop through the object's
//own property by using the hasOwnProperty() method.

if (student.hasOwnProperty(key)) {
    ++count:
}

/////////////////////////////////////////

/Example 2: Loop Through Object Using Object.entries and for...of
// program to loop through an object using for...in loop

const student = { 
    name: 'John',
    age: 20,
    hobbies: ['reading', 'games', 'coding'],
};

// using Object.entries
// using for...of loop
for (let [key, value] of Object.entries(student)) {
    console.log(key + " - " +  value);
}
/Output
	name - John
	age - 20
	hobbies - ["reading", "games", "coding"]

//In the above program, the object is looped using the
//Object.entries() method and the for...of loop.

//The Object.entries() method returns an array of a given object's key/value pairs.
//The for...of loop is used to loop through an array.

//////////////////////////////////////////////////////////
Posted by: Guest on September-07-2021
1

how to iterate through a js object

let object = {
  x: 10,
  y: 10,
  z: 10
};
let keys = Object.keys(object);
// now 3 different ways:
  // method 1:
  key.forEach(function(key){
      let attribute = object[key];
      // do stuff
    }
  );

  //method 2:
  for(let key of keys){
    let attribute = object[key];
    // do stuff
  }

  //method 3:
  for(let i = 0; i < keys.length; i++){
    let key = keys[i];
    let attribute = object[key];
    // do stuff
  }
Posted by: Guest on November-20-2020

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