# Custom Search Button

You may also specify any clickable DOM element as a trigger to lookup a postcode.

Identify your custom input via the [`button`](https://postcode-lookup.ideal-postcodes.co.uk/interfaces/Controller.ControllerConfig.html#button) property.

## Live Demo[​](#live-demo "Direct link to Live Demo")

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```
<form>
  <label>Search your Address</label>
  <div id="lookup_field"></div>
  <!-- Here we've created a link to be used as a trigger for a postcode lookup -->
  <h3><a href="" id="customButton">My Custom Lookup Link</a></h3>
  <div id="address_form">
      <label>Organisation</label>
      <input id="organisation" type="text" />
      <label>Address Line One</label>
      <input id="first_line" type="text" />
      <label>Address Line Two</label>
      <input id="second_line" type="text" />
      <label>Address Line Three</label>
      <input id="third_line" type="text" />
      <label>Post Town</label>
      <input id="post_town" type="text" />
      <label>Postcode</label>
      <input id="postcode" type="text" />
  </div>
</form>
```

```

import { PostcodeLookup } from "@ideal-postcodes/postcode-lookup";

PostcodeLookup.setup({
  context: "#lookup_field",
  apiKey: "ak_test",
  button: "#customButton",
  outputFields: {
    line_1: "#first_line",
    line_2: "#second_line",
    line_3: "#third_line",
    post_town: "#post_town",
    postcode: "#postcode",
  },
});
```