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Algorithm Falsy Bouncer
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Remove all falsy values from an array.
Falsy is something which evaluates to FALSE. There are only six falsy values in JavaScript: undefined, null, NaN, 0, "" (empty string), and false of course.
try to solve the problem now
We need to make sure we have all the falsy values to compare, we can know it, maybe with a function with all the falsy values...
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Then we need to add a filter()
with the falsy values function...
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Solution ahead!
function bouncer(arr) {
return arr.filter(Boolean);
}
🚀 Run Code
The Array.prototype.filter
method expects a function that returns a Boolean
value which takes a single argument and returns true
for truthy value or false
for falsy value. Hence we pass the built-in Boolean
function.
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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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