jQuery Simple Example

HTML

<script src="//www.addressfinder.co.nz/assets/v2/widget.js"></script>
<label for="search_field">Address</label>
<input id="search-box" type='text' class='address_field' />
<button id="submit" type="button" onclick="alert('Hello world!')">Click Me!</button>

CSS

body {
    padding: 5px;
}

label {
    font-weight: bold;
}

input[type=text] {
    width: 20em
}

p {
    margin: 1em 0 0;
}

JavaScript

$(document).ready(function() {
  $('#search-box').on("keyup", function(event) {
    $('#submit').click();
});
});