front-end-developer_1_

Front-End-Developer - Level 1
4 - 3;
5 * 6;
10 / 2;
9 / 2;
7 + 8 * 9;
(7 + 8) * 9;
Try some other arithmetic yourself. Play around with the % operator, called modulo. It will
give you the remainder of dividing two numbers. Don't be fooled into thinking it has
something to do with percentages!
+ , - , * , and / are called operators. An operator is a special character (or characters)
that indicates an action to be performed.
Try dividing 0 by 0. The result, NaN , stands for not a number. In JavaScript, NaN is actually
considered a type of number (bizarre as that may seem).
Try dividing any other number by 0. The result, Infinity , is also a number in JavaScript.
Summary
Cmd + Alt + J opens the JavaScript console in Chrome.
Basic arithmetic works just like you'd expect:
1 + 2;
4 - 3;
5 * 6;
9 / 2;
7 + 8 * 9;
(7 + 8) * 9;
+ , - , * , and / are called operators. An operator is a special character (or characters)
that indicates an action to be performed.
9 % 2 ; returns the remainder of 9 divided by 2. % is called modulo.
0 / 0 ; returns NaN , which stands for not a number. NaN is a type of number.
Infinity is also a number.
Arithmetic
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