I am using Vuetify, specifically the v-text-field from inside v-form. Each of these v-text-fields has a property called rules, used for validation. That property accepts an array with a bunch of functions. This is where I’ve stumbled over a weird-ish piece of code: So, the idea is that this function gets the value from the input, and if the length
Handle null >= 0 in Typescript
I have a simple check where I want to check if the given variable is >=0. The catch here is when the incoming variable has value null, then it will become truthy and log the statement. Is there a clean way to avoid it, but not adding extra checks? Answer You can employ a type guard that will assure the
Why does my test pass, even though it doesn’t meet my logic gate?
I’m working on telephone validator on FCC. For some reason this passes 5555555555. Why does my logic gate pass this number? For context, this isn’t my first attempt at this code. I’ve added multiple statements, nested if statements, and it still doesn’t catch it. Why does this evaluate to true? Here’s the code: Answer You need to restate the condition
I have a variable and if that variable is a object I would like to call a method on that object, if not I want to do nothing. I’m wondering if there is any reason why I shouldn’t do it like this. Answer The quick answer is yes, foo && foo.bar() won’t throw an exception if foo is null, and