make an Interactive Website 3 JavaScript

JavaScript

In order to make interactive web pages with jQuery, it's useful to know a few things about JavaScript.

JavaScript is a programming language that jQuery is written in, and knowing JavaScript will be helpful for understanding and writing your code.

The next cards will cover a few fundamental JavaScript concepts.

Variables

Variables store data so that they can be used later on in the program.  The keyword var creates a new variable namedcounter. The value 140 is stored in counter. The statement ends with a semicolon to tell the computer that the statement has ended.

Strings

Comparisons

It's possible to compare variables using comparisons.

• > - Greater than

• < - Less than

• >= Greater than or equal to

• <= Less than or equal to

• === Equal to score1 === score2;

• !== Not equal to

Functions

A function is run by calling its name and giving it input values.