78 lines
2.3 KiB
Markdown
78 lines
2.3 KiB
Markdown
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---
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id: 56533eb9ac21ba0edf2244d2
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title: Comparison with the Inequality Operator
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challengeType: 1
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---
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## Description
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<section id='description'>
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The inequality operator (<code>!=</code>) is the opposite of the equality operator. It means "Not Equal" and returns <code>false</code> where equality would return <code>true</code> and <em>vice versa</em>. Like the equality operator, the inequality operator will convert data types of values while comparing.
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<strong>Examples</strong>
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<blockquote>1 != 2 // true<br>1 != "1" // false<br>1 != '1' // false<br>1 != true // false<br>0 != false // false</blockquote>
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</section>
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## Instructions
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<section id='instructions'>
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Add the inequality operator <code>!=</code> in the <code>if</code> statement so that the function will return "Not Equal" when <code>val</code> is not equivalent to <code>99</code>
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</section>
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## Tests
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<section id='tests'>
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```yml
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- text: <code>testNotEqual(99)</code> should return "Equal"
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testString: 'assert(testNotEqual(99) === "Equal", "<code>testNotEqual(99)</code> should return "Equal"");'
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- text: <code>testNotEqual("99")</code> should return "Equal"
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testString: 'assert(testNotEqual("99") === "Equal", "<code>testNotEqual("99")</code> should return "Equal"");'
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- text: <code>testNotEqual(12)</code> should return "Not Equal"
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testString: 'assert(testNotEqual(12) === "Not Equal", "<code>testNotEqual(12)</code> should return "Not Equal"");'
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- text: <code>testNotEqual("12")</code> should return "Not Equal"
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testString: 'assert(testNotEqual("12") === "Not Equal", "<code>testNotEqual("12")</code> should return "Not Equal"");'
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- text: <code>testNotEqual("bob")</code> should return "Not Equal"
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testString: 'assert(testNotEqual("bob") === "Not Equal", "<code>testNotEqual("bob")</code> should return "Not Equal"");'
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- text: You should use the <code>!=</code> operator
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testString: 'assert(code.match(/(?!!==)!=/), "You should use the <code>!=</code> operator");'
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='js-seed'>
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```js
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// Setup
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function testNotEqual(val) {
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if (val) { // Change this line
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return "Not Equal";
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}
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return "Equal";
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}
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// Change this value to test
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testNotEqual(10);
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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function testNotEqual(val) {
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if (val != 99) {
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return "Not Equal";
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}
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return "Equal";
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}
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```
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</section>
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