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Polymer Iron-Collapse

The <iron-collapse> elements are used to collapse a content. You can use opened or toggle() with <iron-collapse> element to show or hide the content.

The max-height/max-width of the collapsible element is automatically adjusted by the iron-collapse element.

You can use custom properties and mixins for styling <iron-collapse> element.

–iron-collapse-transition-duration: It specifies the duration of animation transition. Its default value is 300ms.

Example

Open command prompt and use the following commands to navigate to your project folder and implement iron-collapse element.

See this example:

Output: