You can use the dcp APIs if both of these conditions are true:

Dynamic Customer Profiles is enabled for your account.
One of your active and published experiments or campaigns includes an External Attribute audience condition.

If either of the above doesn't apply, then window.optimizely.get('dcp') will return undefined.

Syntax

dcp = window["optimizely"].get("dcp");

Parameters

Parameter and Type	Child Attribute	Description
dcp string	N/A	Required.

Return value

Parameter and Type	Child Attribute	Description
DCPObject	N/A
getAttributeValue functionh of these conditio	Child attribute of type DCPObject	This API function returns the visitor's value for a content-enabled profile attribute.
waitForAttributeValue function these conditions are t	Child attribute of type DCPObject	This API function returns a Promise that will be resolved as soon as Optimizely Web Experimentation receives the visitor's value for a content-enabled profile attribute.

Example Call

dcp = window["optimizely"].get("dcp");

Example Return Value

dcp.getAttributeValue(attribute);
dcp.waitForAttributeValue(attribute);

getAttributeValue()

This API function returns the visitor's value for a content-enabled profile attribute.

Syntax

dcp.getAttributeValue(datasourceId, attributeId, attributeName);

Parameters

Parameter and Type	Child Attribute	Description
datasourceId integer	N/A	Required.
attributeId integer	N/A	Required if `attributeName` is not provided.
attributeName string	N/A	Required if `attributeId` is not provided. Does not work if descriptive names are masked in the Optimizely Web Experimentation snippet.

Return value

Parameter and Type

Child Attribute

Description

number or Boolean or string or Error

N/A

The uploaded attribute value, or undefined if any of the following are true:

A customer profile still needs to be uploaded for the current user.
A profile has been uploaded but doesn't include the desired attribute.
The Optimizely Web Experimentation snippet is waiting for fresh data from the DCP service.\

Note: this function throws an error if any of the following are true:

The specified attribute does not exist.
The attribute is no content-enabled.
The attribute is specified by name even though names are masked in the Optimizely Web Experimentation snippet.

Example Call

dcp.getAttributeValue(datasourceId, attributeId, attributeName);

Examples

Specifying an attribute by ID

Get the value for a customer profile attribute.

Example code for specifying an attribute by ID

var dcp = window.optimizely.get('dcp');
var attributeValue = dcp.getAttributeValue({
  datasourceId: 123,
  attributeId: 456
});

Specifying an attribute by name

Get the value for a customer profile attribute.

Example code for specifying an attribute by name

var dcp = window.optimizely.get('dcp');
var attributeValue = dcp.getAttributeValue({
  datasourceId: 123,
  attributeName: 'Preferred Locale'
});

waitForAttributeValue()

This API function returns a Promise that will be resolved as soon as Optimizely Web Experimentation receives the visitor's value for a content-enabled profile attribute.

Syntax

dcp.waitForAttributeValue(datasourceId, attributeId, attributeName);

Parameters

Parameter and Type	Child Attribute	Description
datasourceId integer	N/A	Required.
attributeId string	N/A	Required if `attributeName` isn't provided.
attributeName string	N/A	Required if `attributeId` is not provided. Does not work if descriptive names are masked in the Optimizely Web Experimentation snippet.

Return value

Parameter and Type

Child Attribute

Description

Promise or Error

N/A

An ES6-style Promise that will be resolved with the uploaded attribute value, or with undefined if any of the following are true:
A customer profile still needs to be uploaded for the current user.
A profile has been uploaded, but it does not include the desired attribute.

If your campaign does not target a DCP Audience, then it's possible that profile data won't be fetched and the Promise will not be resolved.

Note that this function throws an error if any of the following are true:
The specified attribute doesn't exist.
The attribute isn't content-enabled.
The attribute is specified by name even though names are masked in the Optimizely Web Experimentation snippet.

Example Call

dcp.waitForAttributeValue(datasourceId, attributeId, attributeName);

Examples

Specifying an attribute by ID

Receive the value for a customer profile attribute once it has been fetched from the DCP server.

Example code for specifying an attribute by ID

var dcp = window.optimizely.get('dcp');
dcp.waitForAttributeValue({
  datasourceId: 123,
  attributeId: 456
}).then(
  function(attributeValue) {
    ...
  }
);

Specifying an attribute by name

Receive the value for a customer profile attribute once it has been fetched from the DCP server.

Example code for specifying an attribute by name

var dcp = window.optimizely.get('dcp');
dcp.waitForAttributeValue({
  datasourceId: 123,
  attributeName: 'Preferred Locale'
}).then(
  function(attributeValue) {
    ...
  }
);