crowd-checkbox - Amazon SageMaker


A UI component that can be checked or unchecked allowing a user to select multiple options from a set.

See an interactive example of an HTML template that uses this Crowd HTML Element in CodePen.

The following is an example of a Liquid template that uses the <crowd-checkbox> element. Copy the following code and save it in a file with the extension .html. Open the file in any browser to preview and interact with this template.

<script src=""></script> <crowd-form> <p>Find the official website for: <strong>{{ }}</strong></p> <p>Do not give Yelp pages, LinkedIn pages, etc.</p> <p>Include the http:// prefix from the website</p> <crowd-input name="website" placeholder=""></crowd-input> <crowd-checkbox name="website-found">Website Found</crowd-checkbox> </crowd-form>


The following attributes are supported by this element.


A Boolean switch that, if present, displays the check box as checked.

The following is an example of the syntx used to check a checkbox by default.

<crowd-checkbox name="checkedBox" value="checked" checked>This box is checked</crowd-checkbox>


A Boolean switch that, if present, displays the check box as disabled and prevents it from being checked.

The following is an example of the syntax used to disable a checkbox.

<crowd-checkbox name="disabledCheckBox" value="Disabled" disabled>Cannot be selected</crowd-checkbox>


A string that is used to identify the answer submitted by the worker. This value will match a key in the JSON object that specifies the answer.


A Boolean switch that, if present, requires the worker to provide input.

The following is an example of the syntax used to require a checkbox be selected.

<crowd-checkbox name="work_verified" required>Instructions were clear</crowd-checkbox>


A string used as the name for the check box state in the output. Defaults to "on" if not specified.

Element Hierarchy

This element has the following parent and child elements.

  • Parent elements: crowd-form

  • Child elements: none


Provides a JSON object. The name string is the object name and the valuestring is the property name for a Boolean value based on the check box state; true if checked, false if not checked.

Example : Sample Element Outputs

Using the same name value for multiple boxes.

<!-- INPUT --> <div><crowd-checkbox name="image_attributes" value="blurry"> Blurry </crowd-checkbox></div> <div><crowd-checkbox name="image_attributes" value="dim"> Too Dim </crowd-checkbox></div> <div><crowd-checkbox name="image_attributes" value="exposed"> Too Bright </crowd-checkbox></div>
//Output with "blurry" and "dim" checked [ { "image_attributes": { "blurry": true, "dim": true, "exposed": false } } ]

Note that all three color values are properties of a single object.

Using different name values for each box.

<!-- INPUT --> <div><crowd-checkbox name="Stop" value="Red"> Red </crowd-checkbox></div> <div><crowd-checkbox name="Slow" value="Yellow"> Yellow </crowd-checkbox></div> <div><crowd-checkbox name="Go" value="Green"> Green </crowd-checkbox></div>
//Output with "Red" checked [ { "Go": { "Green": false }, "Slow": { "Yellow": false }, "Stop": { "Red": true } } ]

See Also

For more information, see the following.