I don't understand why this piece of code works can someone explain to me? If I delete this piece of the conditional && arr[i] the value of a ...
I don't understand why this piece of code works can someone explain to me? If I delete this piece of the conditional && arr[i] the value of a ...
console.log(typeof 3/0, Boolean(3/0)); // This returns NaN true console.log(typeof 0/0, Boolean(0/0)); // This returns NaN false I tho ...
In the following examples both ex1 & ex2 variables will render an empty string with a space and not a falsy value. Whereas ex3 will be falsy and r ...
Is there an elegant way to check if variable is NOT falsy but in case of 0 it passes. The issue with this way of verifying if(var !== undefined && ...
I am looking at this assignment, and my question is about the part in bold at the end: Here we're going to write a function that mimics going s ...
I am looking for a way to display the numeric value 0 in a dropdown list that also includes placeholder text when the cell is empty. Currently, if 0 i ...
I have the following array: I would like to filter() out all the falsy values except for '' and 0. I understand there is useful shorthand: but ...
I have a question concerning some concepts in JavaScript such as (truthy, true) and (falsy, false). I know the type of 1 is not true but the question ...