Answers for "loop through an object using for in"

53

javascript loop through object example

var person={
 	first_name:"johnny",
  	last_name: "johnson",
	phone:"703-3424-1111"
};
for (var property in person) {
  	console.log(property,":",person[property]);
}
Posted by: Guest on July-22-2019
4

javascript loop through object values

var myObj = {foo: "bar", baz: "baz"};
Object.values(myObj).map((val) => {
console.log(val);
})
// "bar" "baz"
Posted by: Guest on June-11-2020
3

javascript loop through object

Object.entries(obj).forEach(
    ([key, value]) => console.log(key, value)
);

// Loop using forEach
arr.forEach((item, index) => {
    // TODO
})

// Loop using for...of
for (const item of arr) {
    await something()
}

// Clone new array (not changing the old one)
const arr = [1,2,3]
const newArray = arr.map(item => item * 2)
console.log(newArray)

// Filter array by condition
const arr = [1,2,3,1]
const newArray = arr.filter(item => {
    if (item === 1) { return item }
})
console.log(newArray)

// Join array
const arr1 = [1,2,3]
const arr2 = [4,5,6]
const arr3 = [...arr1, ...arr2]
console.log(arr3)

// Get a property of object
const { email, address } = user
console.log(email, address)

// Copy object/array
const obj = { name: 'my name' }
const clone = { ...obj }
console.log(obj === clone)
Posted by: Guest on April-12-2020
1

javascript loop object

for (let thisVariable in thisObject)
Posted by: Guest on May-02-2020
3

javascript loop through object properties

for (var prop in obj) {
    if (Object.prototype.hasOwnProperty.call(obj, prop)) {
        // do stuff
    }
}
Posted by: Guest on April-13-2020
0

javascript looping through object

for (const [fruit, count] of entries) {
  console.log(`There are ${count} ${fruit}s`)
}

// Result
// There are 28 apples
// There are 17 oranges
// There are 54 pears
Posted by: Guest on May-19-2020

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