Hash

When attaching data payloads to events (whether DOM events or something more proprietary like Backbone events), pass an object literal (also known as a hash) instead of a raw value. This allows a subsequent contributor to add more data to the event payload without finding and updating every handler for the event.

Examples

⇣ Incorrect code for this rule:

snow("snowflakesUpdated", snowfall.id);

on("snowflakesUpdated", (e, snowfallID) => {
  // Use "snowfallID".
});

⇡ Correct code for this rule:

snow("snowflakesUpdated", { snowfallID: snowfall.id });

on("snowflakesUpdated", (e, data) => {
  // Use "data.snowfallID".
});