freeCodeCamp/increment-a-number-with-javascript.english.md at 087640d020874bc942d571c9768ff8cb9dcda5c6

Randell Dawson 3ec1fe8ea7 feat: add forumTopicId to challenge frontmatter [pre-existing]

This commit adds the pre-existing challenge guide topics in the
forum to the forntmatter of their challenge markdown files.

2019-08-05 22:14:37 +05:30

1.7 KiB

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id, title, challengeType, videoUrl, forumTopicId

id	title	challengeType	videoUrl	forumTopicId
56533eb9ac21ba0edf2244ac	Increment a Number with JavaScript	1	https://scrimba.com/c/ca8GLT9	18201

Description

You can easily increment or add one to a variable with the ++ operator. i++; is the equivalent of i = i + 1; Note
The entire line becomes i++;, eliminating the need for the equal sign.

Instructions

Change the code to use the ++ operator on myVar. Hint
Learn more about Arithmetic operators - Increment (++).

Tests

tests:
  - text: <code>myVar</code> should equal <code>88</code>
    testString: assert(myVar === 88);
  - text: <code>myVar = myVar + 1;</code> should be changed
    testString: assert(/var\s*myVar\s*=\s*87;\s*\/*.*\s*([+]{2}\s*myVar|myVar\s*[+]{2});/.test(code));
  - text: Use the <code>++</code> operator
    testString: assert(/[+]{2}\s*myVar|myVar\s*[+]{2}/.test(code));
  - text: Do not change code above the line
    testString: assert(/var myVar = 87;/.test(code));

Challenge Seed

var myVar = 87;

// Only change code below this line
myVar = myVar + 1;

After Test

(function(z){return 'myVar = ' + z;})(myVar);

Solution

var myVar = 87;
myVar++;

1.7 KiB Raw Blame History