Arrays and objects are treated as truth values

var shoppingCart=['shoes','dress','belt'];
println(Boolean(shoppingCart));
 
var person={};//Literal object creation
 
// set literal object properties
person.name='huangshiren';
person.age=58;
person.appetite=3;
person.eat=function(){
    document.write('Eating');
}
 
println(Boolean(person));
 
function println(a){
    document.write(a+'<br>');
}