javascript loop through object
Object.entries(obj).forEach(
([key, value]) => console.log(key, value)
);
javascript loop through object
Object.entries(obj).forEach(
([key, value]) => console.log(key, value)
);
loop over keys in object javascript
Object.keys(obj).forEach(function(key) {
console.log(key, obj[key]);
});
javascript loop object
let obj = {
key1: "value1",
key2: "value2",
key3: "value3"
}
Object.keys(obj).forEach(key => {
console.log(key, obj[key]);
});
// key1 value1
// key2 value2
// key3 value3
// using for in - same output as above
for (let key in obj) {
let value = obj[key];
console.log(key, value);
}
iterate over object javascript
// Looping through arrays created from Object.keys
const keys = Object.keys(fruits)
for (const key of keys) {
console.log(key)
}
// Results:
// apple
// orange
// pear
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)
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