how to find the key of an value in an object
function getKeyByValue(object, value) {
return Object.keys(object).find(key => object[key] === value);
}
const map = {"first" : "1", "second" : "2"};
console.log(getKeyByValue(map,"2"));how to find the key of an value in an object
function getKeyByValue(object, value) {
return Object.keys(object).find(key => object[key] === value);
}
const map = {"first" : "1", "second" : "2"};
console.log(getKeyByValue(map,"2"));get keys of dictionary js
// Get keys of a dictionary
let dict = { a:1 , b:2 , c:3 }
console.log( Object.keys(dict) ) // expected output : ['a', 'b', 'c']foreach object js
const object1 = {
a: 'somestring',
b: 42
};
for (let [key, value] of Object.entries(object1)) {
console.log(`${key}: ${value}`);
}
// expected output:
// "a: somestring"
// "b: 42"
// order is not guaranteedforeach key value javascript
const object1 = {
a: 'somestring',
b: 42
};
for (let [key, value] of Object.entries(object1)) {
console.log(`${key}: ${value}`);
}
// expected output:
// "a: somestring"
// "b: 42"
// order is not guaranteedjavascript get all keys of object
myObject = {
"key": "value",
"key2":"value2"
}
Object.keys(myObject);
//console.log(Object.keys(myObject)) = ["key", "key2"]Copyright © 2021 Codeinu
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