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\n\n \n\n\nWix CRM events are fired in your site's backend when certain events related to site contacts occur in your site's backend. You can write event handlers that react to these events. Event handler functions receive data that corresponds to the event that has occurred. Use event handlers to create custom responses to contact related events.\n\n> **Note:** Backend events don't work when previewing your site.\n\nTo add a CRM event handler, add an **events.js** file to the **Backend** section of your site if one does not already exist. All event handler functions for your site are defined in this file.\n\nEvent handler functions are defined using the following pattern:\n```javascript\nexport function _(event) { }\n```\n\nFor example, an event handler that handles contact updates looks like this:\n```javascript\nexport function wixCrm_onContactUpdated(event) { }\n```","displayName":"Introduction","slugifyName":"introduction"}],"namespaces":[],"builderTypes":[],"properties":[]}},"reviewStatus":"UNKNOWN","isLocked":false,"metadata":{"packageVersion":"1.0.135"}}

onContactDeleted( )