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Clarify Declare JS Vars challenge description

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- Update description on what variables are
- Change code tags to dfn tags around the words "data" and "variables"
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Eric Leung 2016-03-28 21:40:53 -05:00
parent ba2c111eb5
commit 68aef569f1
1 changed files with 2 additions and 2 deletions
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challenges/01-front-end-development-certification/basic-javascript.json
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@ -46,9 +46,9 @@
"id": "bd7123c9c443eddfaeb5bdef",
"title": "Declare JavaScript Variables",
"description": [
"In computer science, <code>data</code> is anything that is meaningful to the computer. JavaScript provides seven different <dfn>data types</dfn> which are <code>undefined</code>, <code>null</code>, <code>Boolean</code>, <code>string</code>, <code>symbol</code>, <code>number</code>, and <code>object</code>.",
"In computer science, <dfn>data</dfn> is anything that is meaningful to the computer. JavaScript provides seven different <dfn>data types</dfn> which are <code>undefined</code>, <code>null</code>, <code>Boolean</code>, <code>string</code>, <code>symbol</code>, <code>number</code>, and <code>object</code>.",
"For example, computers distinguish between numbers, such as the number <code>12</code>, and <code>strings</code>, such as <code>\"12\"</code>, <code>\"dog\"</code>, or <code>\"123 cats\"</code>, which are collections of characters. Computers can perform mathematical operations on a number, but not on a string.",
"<code>Variables</code> allow computers to store data in a dynamic fashion, rather than updating a formula every time the data changes. Any of the seven different data types may be stored in a variable.",
"<dfn>Variables</dfn> allow computers to store and manipulate data in a dynamic fashion. They do this by using a \"label\" to point to the data rather than using the data itself. Any of the seven data types may be stored in a variable.",
"<code>Variables</code> are similar to the x and y variables you use in mathematics, which means they're a simple name to represent the data we want to refer to. Computer <code>variables</code> differ from mathematical variables in that they can store different values at different times.",
"We tell JavaScript to create or <dfn>declare</dfn> a variable by putting the keyword <code>var</code> in front of it, like so:",
"<blockquote>var ourName;</blockquote>",