Using Boolean prefixes for variables
readability
Read fire tipError handling with try-catch
JavaScript
With try and catch, we can react to errors in functions that could fail without our code crashing. If there is no error and the function succeeds, the catch-block is skipped.
// `try` to do something that could fail
try {
// this may or may not be possible
makeItBeFriday()
// if we get here, the function worked
console.log('It is Friday now!')
} catch (error) {
// if something in `try` fails and throws an error, we end up here
console.log('Sorry, it is not Friday now.')
}
More fire tips
Splitting arrays by a condition
JavaScript
Read fire tipReplacing all matches in a string
The String prototype’s replace function only replaces the first occurrence of a substring by default. We can extend that with a global flag on the expression.
JavaScriptregular expressions
Read fire tip