Tell us what’s happening:
Your code so far
function bouncer(arr) {
for(let i=0;i<arr.length-1;i++){
switch(arr[i]){
case false:
case null:
case 0:
case "":
arr[i] = true;
break;
}
}
console.log(arr)
const newArr = arr.filter((index)=>{
if(!Number.isNaN(index) && index != true && index != undefined){
return index;
}
})
console.log(newArr)
}
bouncer([1, null, NaN, 2, undefined])
Your browser information:
User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.0) Gecko/20100101 Firefox/68.0.
Link to the challenge: https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/basic-algorithm-scripting/falsy-bouncer
Your answer seems a bit complicated. The first part where you replace the false values isn’t necessary.
You could simply use the filter method combined with a conditional to filter out the falsy values and return only truthy ones.
ilenia
August 27, 2019, 2:58pm
3
you need far simpler things to solve this algorithm, you just need to use the property of falsy values, they evaluate as false when the code expect a boolean and coerce the value to boolean!
maybe check this:https://j11y.io/javascript/truthy-falsey/
I did the switch case as it was mentioned in the problem to convert every falsy to a boolen.
ilenia
August 27, 2019, 5:21pm
5
it was intended more like this:
Do not use a Boolean object to convert a non-boolean value to a boolean value. To perform this task, instead, use Boolean as a function, or a double NOT operator :
var x = Boolean(expression); // use this...
var x = !!(expression); // ...or this
var x = new Boolean(expression); // don't use this!