SDK Javascript v5.x

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hexists #

Checks if a field exists in a hash.

[Redis documentation] (opens new window)

hexists(key, field, [options], callback) #

Arguments Type Description
key string Key identifier
field string Field name
options JSON Object Optional parameters
callback function Callback

Options #

Option Type Description Default
queuable boolean Make this request queuable or not true

Callback Response #

A boolean value specifying if the field exists or not.

Usage #

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// Using callbacks (NodeJS or Web Browser)
kuzzle.memoryStorage.hexists('key', 'field1', function (err, exists) {
  // callback called once the action has completed
// Using promises (NodeJS only)
kuzzle.memoryStorage.hexistsPromise('key', 'field1')
  .then(exists => {
    // resolved once the action has completed

Callback response:

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