The JavaScript exception "missing } after function body" occurs when there is a syntax mistake when creating a function somewhere. Check if any closing curly braces or parenthesis are in the correct order.

Message

SyntaxError: missing } after function body (Firefox)

Error type

SyntaxError

What went wrong?

There is a syntax mistake when creating a function somewhere. Also check if any closing curly braces or parenthesis are in the correct order. Indenting or formatting the code a bit nicer might also help you to see through the jungle.

Examples

Forgotten closing curly bracket

Oftentimes, there is a missing curly bracket in your function code:

function charge() {
  if (sunny) {
    useSolarCells();
  } else {
    promptBikeRide();
}

Correct would be:

function charge() {
  if (sunny) {
    useSolarCells();
  } else {
    promptBikeRide();
  }
}

It can be more obscure when using IIFEs or other constructs that use a lot of different parenthesis and curly braces, for example.

(function () {
  if (Math.random() < 0.01) {
    doSomething();
  }
)();

Oftentimes, indenting differently or double checking indentation helps to spot these errors.

(function () {
  if (Math.random() < 0.01) {
    doSomething();
  }
})();

See also

• Functions guide