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### Interaction <form> <fieldset> <a href="https://cosmic.link/?type=changeTrust&network=test&asset=GILS:gils*cosmic.plus"> <input type="button" value="Trust GILS on testnet"> </a> </fieldset> </form> ### Description This pen shows how to pass a trustline opening request from a simple HTML button. It uses the CosmicLink protocol. ### Concepts - [Trustline](https://www.stellar.org/developers/guides/concepts/assets.html#trustlines): A declaration that you accept to hold a given asset. - [CosmicLink](https://cosmic.plus/#view:js-cosmic-lib/#what-are-cosmiclinks): A protocol to encode Stellar transactions into URIs. ### Keypoints - GILS is an asset issued by Cosmic.plus to reward people who solve Pen of the Week challenges. [Read more...](https://codepen.io/cosmic-plus/full/eYOeoWZ) - By looking at the code, you should be able to make sense of the link in the `href` attribute. - The part starting from the `?` is the transaction request. - The part before the `?` is the handler address. - Other handlers are available, such as `https://stellar-authenticator.org` or the CosmicLink debugger linked bellow. ### Challenges - **easy/** Edit the code to create a `[Trust GILS on public]` button. `(1000 GILS)` - **hard/** Edit the code to create a `[Close GILS trustline]` button that passes its request to the CosmicLink debugger. `(3000 GILS)` _Give it a try by editing the code, and be the first to post a solution on GalacticTalk to claim the reward!_ ### Documentation - [CosmicLink Cheatsheet](https://cosmic.plus/#view:js-cosmic-lib/web/doc/tutorial-20-cheatsheet-query.html) - [CosmicLink Debugger](https://cosmic.plus/js-cosmic-lib/web/demo) ### Social - [Discuss that pen on GalacticTalk](https://galactictalk.org/d/2132-pen-of-the-week-html-only-open-trustline-button)
Also see: Tab Triggers