Style the input element for typeahead functionality

I am working on a simple textbox input that has the following appearance:

<input type="text" placeholder="Search for states">

My goal is to implement an autocomplete feature similar to typeahead. While I have successfully implemented the autocomplete functionality, I now wish to display the first suggestion directly in the textbox. Here's an example scenario:

After typing "Al," the suggestions provided are:

Textbox: Al

  • Alabama
  • Algeria

What I aim to achieve is having the text "Alabama" appear in the textbox with the word "abama" in faded text.

I am seeking guidance on how this can be achieved using jQuery or pure JS. Is it possible to apply different text styles to different substrings within the same input element?

If there are alternative methods (such as overlaying another transparent text control), I would appreciate seeing an example. It's important to note that modifying the input element itself is not an option.

javascriptjqueryhtmlcss

Answer №1

Check out this code on CodePen: http://codepen.io/mozzi/pen/XKKJWq

This code snippet is similar to what you're looking for. I've opted for selecting text instead of fading it, since achieving half-faded text in a text box can be tricky. Let me know your thoughts on this approach.

Here's the HTML:

<div class="ui-widget">
  <label for="automplete-1">Enter a U.S. state name: </label>
  <input id="automplete-1" placeholder="U.S. state name">
</div>

And here's the relevant JavaScript:

$("#automplete-1").autocomplete({
  delay: 0,
  source: UsStateNames,
  response: function(event, ui) {
    var start = $("#automplete-1").val().length;
    $("#automplete-1").val(ui.content[0].value);
    var end = ui.content[0].value.length;
    $("#automplete-1")[0].setSelectionRange(start, end);
  }
});

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