AI Prompt

<msc-ai-prompt /> is a web component based on Chrome Built-in AI Prompt API. Web developers could use <msc-ai-prompt /> wrap form element and give it prompt feature support.

The following demo is a product description input field. User could press prompt trigger which at top-right corner. Then Gemini will give suggestion depend on data you just input.

Let's see what can <msc-ai-prompt /> do ?

Current browser doesn't support Cheom Built-in AI.

  • systemPrompt：

  • temperature：

Basic Usage

<msc-ai-prompt /> is a web component. All we need to do is put the required script into your HTML document. Then follow <msc-ai-prompt />'s html structure and everything will be all set.

Required Script

<script type="module" src="https://unpkg.com/msc-ai-prompt/mjs/wc-msc-ai-prompt.js"> </script>

Structure

Put <msc-ai-prompt /> into HTML document. It will have different functions and looks with attribute mutation.

<msc-ai-prompt> <script type="application/json"> { "config": { "systemPrompt": "", "temperature": 0.8, "topK": 3 }, "prompts": "Rewrite the following article and make it more vivid.\n\n{{replacement}}", "l10n": { "subject": "Gemini", "introduction": "Here comes your product description rewrite result.", "apply": "APPLY", "triggerlabel": "make product description more vivid" } } </script> <textarea name="product-description" placeholder="input some description."> With iPhone Mirroring, you can view your iPhone screen on your Mac and control it without picking up your phone. Continuity features also let you answer calls or messages right from your Mac. You can even copy images, video, or text from your iPhone and paste it all into a different app on your Mac. And with iCloud, you can access your files from either device. </textarea> </msc-ai-prompt>

Otherwise, developers could also choose remoteconfig to fetch config for <msc-ai-prompt />.

<msc-ai-prompt remoteconfig="https://your-domain/api-path" > ... </msc-ai-prompt>

JavaScript Instantiation

<msc-ai-prompt /> could also use JavaScript to create DOM element. Here comes some examples.

<script type="module"> import { MscAiPrompt } from 'https://unpkg.com/msc-ai-prompt/mjs/wc-msc-ai-prompt.js'; const formElementTemplate = document.querySelector('.my-form-element-template'); // use DOM api const nodeA = document.createElement('msc-ai-prompt'); document.body.appendChild(nodeA); nodeA.appendChild(formElementTemplate.content.cloneNode(true)); nodeA.config = { systemPrompt: '', temperature: .8, topK: 3 }; nodeA.disabed = false; // new instance with Class const nodeB = new MscAiPrompt(); document.body.appendChild(nodeB); nodeB.appendChild(formElementTemplate.content.cloneNode(true)); nodeB.config = { systemPrompt: '', temperature: .8, topK: 3 }; nodeB.disabed = true; // new instance with Class & default config const config = { config: { systemPrompt: '', temperature: .8, topK: 3 } }; const nodeC = new MscAiPrompt(config); document.body.appendChild(nodeC); nodeC.appendChild(formElementTemplate.content.cloneNode(true)); </script>

Style Customization

Developers could apply styles to decorate <msc-ai-prompt />'s looking.

<style> msc-ai-prompt { /* trigger */ --msc-ai-prompt-trigger-size: 40px; --msc-ai-prompt-trigger-inset: 8px 8px auto auto; --msc-ai-prompt-trigger-z-index: 1; --msc-ai-prompt-trigger-icon: path('M7.2,13.2c0-1.5-0.5-2.8-1.6-3.8C4.6,8.3,3.3,7.8,1.8,7.8c1.5,0,2.8-0.5,3.8-1.6c1.1-1.1,1.6-2.3,1.6-3.8 c0,1.5,0.5,2.8,1.6,3.8c1.1,1.1,2.3,1.6,3.8,1.6c-1.5,0-2.8,0.5-3.8,1.6C7.7,10.4,7.2,11.7,7.2,13.2z M7.2,19.8h1.3l9.4-9.4 l-0.7-0.7l-0.6-0.6l-9.4,9.4V19.8z M5.4,21.6v-3.8L17.9,5.3c0.4-0.4,0.8-0.5,1.3-0.5s0.9,0.2,1.3,0.5l1.3,1.3 c0.4,0.4,0.5,0.8,0.5,1.3s-0.2,0.9-0.5,1.3L9.2,21.6H5.4z M20.4,7.8l-1.3-1.2L20.4,7.8z M17.9,10.4l-0.7-0.7l-0.6-0.6L17.9,10.4z'); --msc-ai-prompt-trigger-icon-color: rgba(35 42 49); --msc-ai-prompt-trigger-icon-scale: 1; /* dialog */ --msc-ai-prompt-dialog-background-color: rgba(255 255 255); --msc-ai-prompt-dialog-backdrop-color: rgba(35 42 49/.6); --msc-ai-prompt-dialog-head-text-color: rgba(35 42 49); --msc-ai-prompt-dialog-line-color: rgba(199 205 210); --msc-ai-prompt-dialog-close-icon-color: rgba(95 99 104); --msc-ai-prompt-dialog-close-hover-background-color: rgba(245 248 250); --msc-ai-prompt-dialog-apply-background-color: rgba(0 99 235); --msc-ai-prompt-dialog-introduction-color: rgba(35 42 49); --msc-ai-prompt-dialog-result-color: rgba(44 54 63); --msc-ai-prompt-dialog-result-background-color: rgba(245 248 250); } </style>

Otherwise delevelopers could also add className - align-container-size to make <msc-ai-prompt />'s size same as container's size.（default is inline-size: 100% only）

<msc-ai-prompt class="align-container-size"> ... </msc-ai-prompt>

Attributes

<msc-ai-prompt /> supports some attributes to let it become more convenience & useful.

config

Set Prompt API create config.

- systemPrompt：Set systemPrompt. Default is empty string.
- temperature：Set temperature. Default is 0.8.
- topK：Set topK. Default is 3.

<msc-ai-prompt config='{"systemPrompt":"","temperature":0.8,"topK":3}'> ... </msc-ai-prompt>

prompts

Set prompts. Web developer could add keyword {{replacement}} in prompt sentence, <msc-ai-prompt /> will use first form element's (input[type=text], textarea) value and do replace action. Default is empty string.

<msc-ai-prompt prompts="Rewrite the following article and make it more vivid.\n\n{{replacement}}"> ... </msc-ai-prompt>

disabled

Hides the prompt trigger button once set. It is false by default (not set).

<msc-ai-prompt disabled> ... </msc-ai-prompt>

l10n

Set localization for title or action buttons.

- subject：Set dialog subject.
- introduction：Set dialog result title.
- apply：Set prompt trigger button's content.
- triggerlabel：Set prompt trigger button's label.

<msc-ai-prompt l10n='{"subject":"Gemini","introduction":"Here comes your prompt result.","apply":"APPLY","triggerlabel":"prompt"}'> ... </msc-ai-prompt>

Properties

Property Name Type Description
config Object Getter / Setter Prompt API create config. Developers could set systemPrompt、temperature and topK here.
prompts String Getter / Setter prompts. Web developer could add keyword {{replacement}} in prompt sentence, <msc-ai-prompt /> will use first form element's (input[type=text], textarea) value and do replace action. Default is empty string.
disabled Boolean Getter / Setter disabled. Hides the prompt trigger button once set. It is false by default.
l10n Object Getter / Setter localization for title or action buttons. Developers could set subject、introduction、apply and triggerlabel here.
available String Getter available. Web developers will get "no" if current browser doesn't support Build-in AI.

Mathod

Mathod Signature Description
prompt(prompt = <msc-ai-prompt />'s prompts) Go prompt. This is an async function. Default will take <msc-ai-prompt />'s prompts value.

Events

Event Signature Description
msc-ai-prompt-apply Fired when result dialog's apply button pressed. Developers could gather result information through event.detail.
msc-ai-prompt-error Fired when prompt process error occured. Developers could gather message information through event.detail.
msc-ai-prompt-process Fired when prompt processing.
msc-ai-prompt-process-end Fired when prompt process end.

Reference