54 lines
2.3 KiB
Markdown
54 lines
2.3 KiB
Markdown
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---
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title: Comparison with the strict equality operator
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---
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## Comparison with the strict equality operator
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### Problem explanation:
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· _Use the strict equality operator in the `if` statement so the function will return "Equal" when `val` is strictly equal to `7`._
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#### Hint 1
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Remember from last exercise that _equality is different from assignment (`=`), which assigns the value at the right of the operator to a variable in the left._<sup><a href="#cite1">1</a></sup>
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> _try to solve the problem now_
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>
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#### Hint 2
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_Unlike the equality operator, which attempts to convert both values being compared to a common type, the strict equality operator does not perform a type conversion._<sup><a href="#cite2">2</a></sup>
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> _try to solve the problem now_
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## Spoiler alert!
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**Solution ahead!**
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## Basic code solution:
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```javascript
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// Setup
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function testStrict(val) {
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if (val === 7) { // Change this line
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return "Equal";
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}
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return "Not equal";
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}
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// Change this value to test
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testStrict(10);
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```
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### Code explanation
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The function first evaluates `if` the condition `(val === 7)` evaluates to `true`. If it does, it returns the statement between the curly braces ("Equal"). If it doesn't, it returns the next `return` statement outside them ("Not equal").
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### Sources
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<span id="cite1">1</span>. ["Basic JavaScript: Comparison with the Equality Operator", fCC lesson at *Javascript Algorithms And Data Structures Certification*](https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/basic-javascript/comparison-with-the-equality-operator)
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<span id="cite2">2</span>. ["Basic JavaScript: Comparison with the Strict Equality Operator", fCC lesson at *Javascript Algorithms And Data Structures Certification*](https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/basic-javascript/comparison-with-the-strict-equality-operator)
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### Resources
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- ["if...else" - *MDN JavaScript reference*](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/if...else)
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- [Kondov, Alexander. "Understanding JS: Coercion". *Hackernoon*](https://hackernoon.com/understanding-js-coercion-ff5684475bfc), Accessed 15 Sep. 2018
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- ["Comparison operators" - *MDN JavaScript reference*](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Comparison_Operators)
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