js loop through object
const obj = { a: 1, b: 2 };
Object.keys(obj).forEach(key => {
console.log("key: ", key);
console.log("Value: ", obj[key]);
} );js loop through object
const obj = { a: 1, b: 2 };
Object.keys(obj).forEach(key => {
console.log("key: ", key);
console.log("Value: ", obj[key]);
} );javascript object entries
// Object Entries returns object as Array of [key,value] Array
const object1 = {
a: 'somestring',
b: 42
}
Object.entries(object1) // Array(2) [["a", "something"], ["b", 42]]
.forEach(([key, value]) => console.log(`${key}: ${value}`))
// "a: somestring"
// "b: 42"foreach key value javascript
const object1 = {
a: 'somestring',
b: 42
};
for (let [key, value] of Object.entries(object1)) {
console.log(`${key}: ${value}`);
}
// expected output:
// "a: somestring"
// "b: 42"
// order is not guaranteedget all entries in object as array hjs
const object1 = {
a: 'somestring',
b: 42
};
for (let [key, value] of Object.entries(object1)) {
console.log(`${key}: ${value}`);
}
// expected output:
// "a: somestring"
// "b: 42"
// order is not guaranteedjavascript fromEntries
// JS fromEntries => list of key-values transformation into an object
const keys = ["name", "species", "age", "gender", "color"];
const values = ["Skitty", "cat", 9, "female", "tabby"];
const run = document.getElementById("run");
run.addEventListener("click", function () {
let createObj = [];
keys.forEach((item, index) => {
createObj.push([item, values[index]]);
});
const object = Object.fromEntries(createObj);
console.log(object);
});
// expected output = Object { name: "Skitty", species: "cat", age: 9 etc..}javascript convert Object.entries back to object
const arr = [ ['0', 'a'], ['1', 'b'], ['2', 'c'] ];
const obj = Object.fromEntries(arr);
console.log(obj); // { 0: "a", 1: "b", 2: "c" }Copyright © 2021 Codeinu
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