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How to Customize Autocomplete Plugin Display with Bold Match Highlight?
How to Customize Autocomplete Plugin Display with Bold Match Highlight?
Oct 21, 2024 am 07:58 AM
Customizing Autocomplete Plugin Results' Display with Bold Match Highlight
In jQuery UI's Autocomplete plugin, highlighting search terms in drop-down results enhances user experience. This article explains how to customize this display to suit specific requirements.
Solution: Monkey-Patching
Monkey-patching, a technique to redefine internal library functions, provides a solution. Overriding the _renderItem function, which generates list items for suggestions, allows for custom rendering.
Here's the monkey-patching code that adds a bold highlight to the matching portion of results:
<code class="javascript">function monkeyPatchAutocomplete() {
$.ui.autocomplete.prototype._renderItem = function(ul, item) {
var re = new RegExp("^" + this.term);
var t = item.label.replace(
re,
"<span style='font-weight:bold;color:Blue;'>" +
this.term +
"</span>"
);
return $(`<li></li>`)
.data("item.autocomplete", item)
.append(`<a>` + t + "</a>")
.appendTo(ul);
};
}</code>
Call this function in $(document).ready(..):
<code class="javascript">$(document).ready(function() {
monkeyPatchAutocomplete();
});</code>
Considerations:
This hack approach has some limitations:
- Regex pattern is created for each rendered item, while it could be reused.
- Inline style is used instead of CSS class for formatting.
Despite these limitations, the technique effectively highlights matching terms in drop-down results, meeting the desired requirement.
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