JavaScript 写入控制台的程序

// program to write to console
// passing number 
console.log(8);
// passing string
console.log('hello');
// passing variable
const x = 'hello';
console.log(x);
// passing function
function sayName() {
    return 'Hello John';
}
console.log(sayName());
// passing string and a variable
const name = 'John';
console.log('Hello ' + name);
// passing object
let obj = {
    name: 'John',
    age: 28
}
console.log(obj);

8
hello
hello
Hello John
Hello John
{
  age: 28,
  name: "John"
}