javascript object entries
for (const [key, value] of Object.entries(object1)) {
console.log(`${key}: ${value}`);
}
// Object Entries returns object as Array of [key,value] Array
const object1 = {
a: 'somestring',
b: 42
}
Object.entries(object1) // Array(2) [["a", "something"], ["b", 42]]
.forEach(([key, value]) => console.log(`${key}: ${value}`))
// "a: somestring"
// "b: 42"// Access all properties and values in a JS object:
let valuesArray = Object.entries(MyObject);
for (let value of valuesArray) {
document.write(value + "<br>"); // value is the property,value pair
}
/* Result: propName,value
propName,value
...
For clarity: */
let person = {
name: "Piet",
age: 42
};
Object.keys(person) // = ["name", "age"]
Object.values(person) // = ["Piet", 42]
Object.entries(person) // = [ ["name","Piet"], ["age",42] ]
const object1 = {
a: 'some string',
b: 42
};
for (let [key, value] of Object.entries(object1)) {
console.log(`${key}: ${value}`);
}
// expected output:
// "a: some string"
// "b: 42"
// order is not guaranteedconst object1 = { a: 'somestring', b: 42 };
for (const [key, value] of Object.entries(object1)) {
console.log(`${key}: ${value}`);
} // expected output: "a: somestring" "b: 42" order is not guaranteedvar obj = { foo: 'bar', baz: 42 };
console.log(Object.entries(obj)); // [ ['foo', 'bar'], ['baz', 42] ]
// objeto array-like
var obj = { 0: 'a', 1: 'b', 2: 'c' };
console.log(Object.entries(obj)); // [ ['0', 'a'], ['1', 'b'], ['2', 'c'] ]
Object.entries(obj).forEach(([key, value]) => {
console.log(key + ' ' + value); // "a 5", "b 7", "c 9"
});