Original subtitles

When working with

complex expressions, one thing that you need to account for is the

precedents of operators. Let me show you an example.

So, let's declare x and set it to 2,

plus 3 x 4. What do you think is the

result of this expression. Well, let's log this and have a look.

So, we get 14. The reason for that

is because the multiplication operator has higher

precedents so this expression is evaluated first, so 3

x 4 is 12, and then the result is added to 2.

Now, all these operators you have learned in this section, they have their own

precedents. It's really hard to memorize which operators have

higher precedents or lower precedents. So when working with complex expressions

you can use parenthesis to determine how these

operators are applied. For example, here we can put parenthesis

around 2 plus 3, and this means this expression

is evaluated first, so we get 5, and then the result

is multiplied by 4. So now if we save the changes we get

20.