JavaScript Object Values

Object.values() is similar to Object.entries(), but it returns a one-dimensional array containing only the values of the object’s properties.

Example

const person = {
firstName : “John”,
lastName : “Doe”,
age : 50,
eyeColor : “blue”
};

let text = Object.values(person);

The Object.values() method has been supported in all modern browsers since March 2017.

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JavaScript Async Functions

Waiting for a Timeout

async function myDisplay() {
let myPromise = new Promise(function(myResolve, myReject) {
setTimeout(function() { myResolve(“I love You !!”); }, 3000);
});
document.getElementById(“demo”).innerHTML = await myPromise;
}

myDisplay();

Async functions have been supported in all modern browsers since September 2017.

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JavaScript Trailing Commas

JavaScript allows trailing commas in places where a comma-separated list of values is used, such as in array and object literals, function calls, parameters, imports, and exports.

Example

function myFunc(x,,,) {};
const myArr = [1,2,3,4,,,];
const myObj = {fname: John, age:50,,,};

Trailing commas have been supported in all modern browsers since May 2017.

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