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Algorithm Boo Who
- This program is very simple, the trick is to understand what a boolean primitive is. The programs requires a true or false answer.
- You will need to check for the type of the parameter to see if it is a boolean.
- To check for the type of a parameter, you can use
typeof
- Since you must return true or false you can use if statements or just have it return the boolean used for the if statement.
Solution ahead!
function booWho(bool) {
return typeof bool === 'boolean';
}
// test here
booWho(null);🚀 Run Code
Uses the operator typeof to check if the variable is a boolean. If it is, it will return true. Otherwise, if it is any other type it will return false.
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JS Concepts
JS Language Reference
- arguments
- Array.prototype.filter
- Array.prototype.indexOf
- Array.prototype.map
- Array.prototype.pop
- Array.prototype.push
- Array.prototype.shift
- Array.prototype.slice
- Array.prototype.some
- Array.prototype.toString
- Boolean
- for loop
- for..in loop
- for..of loop
- String.prototype.split
- String.prototype.toLowerCase
- String.prototype.toUpperCase
- undefined
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