48 lines
1.5 KiB
Markdown
48 lines
1.5 KiB
Markdown
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---
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title: Comparisons with the && (logical AND) operator
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---
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## Comparisons with the && (logical AND) operator
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### Problem explanation:
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· _Combine the two if statements into one statement which will return `"Yes"` if `val` is less than or equal to `50` and greater than or equal to `25`. Otherwise, will return `"No"`._
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#### Hint 1
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The logical AND (`&&`) operator compares both statements and returns `true` only if both are true or can be converted to true (truthy).
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> _try to solve the problem now_
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>
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#### Hint 2
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Remember that this effect can be also achieved by nesting `if` statements.
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> _try to solve the problem now_
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>
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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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function testLogicalAnd(val) {
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// Only change code below this line
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if (val <= 50 && val >= 25) {
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return "Yes";
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}
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// Only change code above this line
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return "No";
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}
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// Change this value to test
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testLogicalAnd(10);
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```
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· [Run code at repl.it](https://repl.it/@AdrianSkar/Basic-JS-Comparison-with-the-and-operator)
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### Code explanation
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The function first evaluates `if` the condition `val <= 50` evaluates to `true` converting `val` to a number if necessary, then does the same with `val >=25` because of the logical AND (`&&`) operator; if both return true, the `return "Yes"` statement is executed.
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### Resources
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- ["Logical operators" - *MDN JavaScript reference*](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Logical_Operators)
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