Conditional let us determine when we do what
Using conditionals allows us to protect code from executing until the proper conditons are met.
Think of conditionals a way of putting a wall around a walled city. Your city has a gate, but you hold the power to open that gate from the right people
Let's look at an example:
var age = 18
if (age < 21) {
console.log('Sorry kid, I can't serve you')
}
In this example, we are comparing two numbers, if age is less than (<) 21 we excute the console.log within the brackets. In the age the expression age < 21 evaluates to true, so we excute the console.log. This brings us to our next concept.
In javascript we a boolean data types that are explictly true or false, but javascript assigns everything a truthy or falsy value. In if blocks and ternaries we can use truthy and falsy values as conditions
Let's go over some common truthy and falsy values in javascript.