exists #
Checks if the specified keys exist in the database.
Arguments #
exists(keys, [options]);| Arguments | Type | Description |
|---|---|---|
keys | string[] | Keys to check for existence |
options | object | Optional query arguments |
options #
The options arguments can contain the following option properties:
| Property | Type (default) | Description |
|---|---|---|
queuable | boolean (true) | If true, queues the request during downtime, until connected to Kuzzle again |
Resolve #
Resolves to the number of existing keys.
Usage #
try {
// Prints: 0
console.log(await kuzzle.ms.exists(['foo']));
await kuzzle.ms.set('foo', 'bar');
// Prints: 1
console.log(await kuzzle.ms.exists(['foo']));
console.log('Success');
} catch (error) {
console.error(error.message);
}