switch(value) Last updated: 17. Oct 2026

Runs the code after the case that matches a value — a more readable alternative to a series of if/else statements.

HashJS rules:

Each case must be a single literal value, such as 'apple' or 3. Expressions and variables are not allowed after case.
Values are compared with .NET equality, without type conversion: case "1" does not match the number 1.
default matches as soon as it is reached, so place it last.
A case without break falls through to the code of the next case.

Parameters

Name	Type	Description
value	expression	Value/expression to evaluate in the following case statements.

Returns

Nothing.

Example

Code example (JS)

JS is normal JavaScript either running in the browser or on the Docly™ server.

let value = 'banana';

switch (value) {
  case 'apple':
    write('This is an apple');
    break;
  case 'banana':
    write('This is a banana');
    break;
  default:
    write('Unknown fruit');
}

Output

The JS code above produces the output shown below:

This is a banana