freeCodeCamp/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-introductory-javascript-by-building-a-pyramid-generator/660ee6e3a242da6bd579de69.md

id, title, challengeType, dashedName

id	title	challengeType	dashedName
660ee6e3a242da6bd579de69	Step 2	1	step-2

--description--

One of the most important concepts in programming is variables. A variable points to a specific memory address that stores a value. Variables are given a name which can be used throughout your code to access that value.

Declaring a variable means giving it a name. In JavaScript, this is often done with the let keyword. For example, here is how you would declare a hello variable:

let hello;

Variable naming follows specific rules: names can include letters, numbers, dollar signs, and underscores, but cannot contain spaces and must not begin with a number.

Use the let keyword to declare a variable called character.

Note: It is common practice to end statements in JavaScript with a semicolon. ;

--hints--

You should use let in your code.

assert.match(__helpers.removeJSComments(code), /let/);

You should use character in your code.

assert.match(__helpers.removeJSComments(code), /character/);

You should use let to declare a character variable.

assert.match(__helpers.removeJSComments(code), /let\s+character/);

Your declaration should end with a semi-colon.

assert.match(__helpers.removeJSComments(code), /let\s+character;/);

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