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

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

Required.

Return value

Parameter and Type

Child Attribute

Description

DCPObject

getAttributeValue
function[getAttributeValue]

Child attribute of type DCPObject

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

waitForAttributeValue
function[waitForAttributeValue]

Child attribute of type DCPObject

This API function returns a Promise that will be resolved as soon as Optimizely 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

Required.

attributeId
integer

Required if attributeName is not provided.

attributeName
string

Required if attributeId is not provided. Doesn't work if descriptive names are masked in the Optimizely snippet.

Return value

Parameter and Type

Child Attribute

Description

number or Boolean or string or Error

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 snippet is waiting for fresh data from the DCP service.

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 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 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

Required.

attributeId
string

Required if attributeName isn't provided.

attributeName
string

Required if attributeId isn't provided. Doesn't work if descriptive names are masked in the Optimizely snippet.

Return value

Parameter and Type

Child Attribute

Description

Promise or Error

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 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) {
    ...
  }
);

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