Hi Ryan,

For the mentioned use case you can try the below JS: 

var searchInpt = document.getElementById($parameters.SearchInputId);

searchInpt.addEventListener('keypress', function (e) {
    var code = e.keyCode || e.which || e.charCode;
    if(code === 13) { //Enter keycode
        $actions.SearchFruitByFruitName();
    }
});

See this sample SearchInputDemo

Refer to the attached .oml file.

I hope this helps you!

Kind regards,

Benjith Sam