It is standard practice to continue inside a loop if a certain condition is met/unmet. In a Javascript forEach loop, this produces a syntax error:
const values = [1, 2, 3, 4, 5];
values.forEach((value) => {
if (value === 3) { continue; }
console.log(value);
})
SyntaxError[ ... ]: Illegal continue statement: no surrounding iteration statement
This happens whether I use function or an arrow function. How can you continue inside a forEach loop?
Obviously, you could do an inverse case (if (value !== 3) { ... }), but that is not what I'm looking for.
As @robertklep stated forEach() is not a loop, it is a function. You cannot use the continue keyword inside a forEach loop because its functionality is meant to loop each item in the array.
To achive the simmilar behavior you can use,
for(let item of values){
if (item === 3) {
continue;
}
console.log(item);
}
For practical purposes, return in a forEach() callback is equivalent to continue in a conventional for loop but it isn't the most idiomatic use of functional programming patterns
To solve that, you can filter before you loop:
const values = [1, 2, 3, 4, 5];
values.filter(v => v !== 3).forEach((value) => {
console.log(value);
})