Javascript 7.x

hexists

Checks if a field exists in a hash.

[Redis documentation]

Arguments

Copied to clipboard!
hexists(key, field, [options]);

Arguments Type Description
key
string
Hash key
field
string
Field name
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 a boolean telling whether the checked field exists or not.

Usage

Copied to clipboard!
try {
  // Prints: false
  console.log(await kuzzle.ms.hexists('hashfoo', 'foo'));
  await kuzzle.ms.hset('hashfoo', 'foo', 'bar');
  // Prints: true
  console.log(await kuzzle.ms.hexists('hashfoo', 'foo'));
} catch (error) {
  console.error(error.message);
}