CODEWITHSUNDEEP
jquery-uijqueryjquery-autocomplete
pal
pal

Reputation: 1242

How to highlight input words in autocomplete jquery ui

Could you please help me in highlighting the typed words in the auto complete text box. i am already populating the autocomplete words and i need to just highlight the typed words alone.i am new to Jquery autocomplete

i am getting the output as text like <Strong>Br</Strong>ijesh // seen as text
and not as highlighting the Br alone.

Below is the snippet

$(document).ready(function () {
$("#studentName").autocomplete({
    source: function (request, response) {
        $.ajax({
            type: "POST",
            contentType: "application/json; charset=utf-8",
            url: "Webservice.asmx/GetStudentNames",
            data: "{'prefixText':'" + request.term + "'}",
            dataType: "json", 
            success: function (data) {
           var regex = new RegExp("(?![^&;]+;)(?!<[^<>]*)(" + request.term.replace(/([\^\$\(\)\[\]\{\}\*\.\+\?\|\\])/gi, "\\$1") + ")(?![^<>]*>)(?![^&;]+;)", "gi");
                response($.map(data.d, function (item) {
                    return {
                    label: item.split('|')[0].replace(regex, "<Strong>$1</Strong>"),
                    val: item.split('|')[1]
                    }
                }))
            },

            failure: function (response) {
                ServiceFailed(result);
            }
        });
    },
    select: function (event, ui) {
     txtStudent(ui.item.val, ui.item.label); //Student name and id used in this method
    },
    minLength: 2
});
});              // End of ready method

Please help me.

Upvotes: 26

Views: 25491

Answers (6)

Prateek
Prateek

Reputation: 1257

Here is the code I used to make it work (case insensitive):

open: function (e, ui) {
      var acData = $(this).data('ui-autocomplete');
      acData.menu.element.find('li').each(function () {
         var me = $(this);
         var keywords = acData.term.split(' ').join('|');
         me.html(me.text().replace(new RegExp("(" + keywords + ")", "gi"), '<strong>$1</strong>'));
      });
   }

Upvotes: 1

Oleg
Oleg

Reputation: 221997

It seems to me you should overwrite the _renderItem method to have custom rendering of the items. The code could be about the following:

$("#studentName").autocomplete({/* all your parameters*/})
    .data("autocomplete")._renderItem = function (ul, item) {
        var newText = String(item.value).replace(
                new RegExp(this.term, "gi"),
                "<span class='ui-state-highlight'>$&</span>");

        return $("<li></li>")
            .data("item.autocomplete", item)
            .append("<div>" + newText + "</div>")
            .appendTo(ul);
    };

In the code I use jQuery UI CSS "ui-state-highlight" for highlighting. You can use <strong> instead. Moreover I don't include the code which would escape any RegEx characters which could be inside of this.term. I wanted to explain you the main idea only. Look at the answer for example for additional information.

UPDATED: More recent versions of jQuery UI uses .data("ui-autocomplete") instead of .data("autocomplete"). To make your code working in both (old and new) versions of jQuery you can do something like the following:

var $elem = $("#studentName").autocomplete({/* all your parameters*/}),
    elemAutocomplete = $elem.data("ui-autocomplete") || $elem.data("autocomplete");
if (elemAutocomplete) {
    elemAutocomplete._renderItem = function (ul, item) {
        var newText = String(item.value).replace(
                new RegExp(this.term, "gi"),
                "<span class='ui-state-highlight'>$&</span>");

        return $("<li></li>")
            .data("item.autocomplete", item)
            .append("<div>" + newText + "</div>")
            .appendTo(ul);
    };
}

UPDATED 2: In the same way the name "item.autocomplete" should be changed to "ui-autocomplete-item". See here.

Upvotes: 43

Rinku Budania
Rinku Budania

Reputation: 60

$.ui.autocomplete.prototype._renderItem = function (ul, item) {
item.label = item.label.replace(new RegExp("(?![^&;]+;)(?!<[^<>]*)(" + $.ui.autocomplete.escapeRegex(this.term) + ")(?![^<>]*>)(?![^&;]+;)", "gi"), "<strong>$1</strong>");
    return $("<li></li>")
            .data("item.autocomplete", item)
            .append("<a>" + item.label + "</a>")
            .appendTo(ul);
};

Use this

Upvotes: 2

wildnove
wildnove

Reputation: 2305

For a correct render in jQuery UI - v1.12.1 use "div", not "a"

$.ui.autocomplete.prototype._renderItem = function (ul, item) {        
    var t = String(item.value).replace(
            new RegExp(this.term, "gi"),
            "<strong>$&</strong>");
    return $("<li></li>")
        .data("item.autocomplete", item)
        .append("<div>" + t + "</div>")
        .appendTo(ul);
};

Upvotes: 8

Avinash Ranjan
Avinash Ranjan

Reputation: 180

we can also implement it like this.

 $("#studentName").autocomplete({/* all your parameters*/});
    $.ui.autocomplete.prototype._renderItem = function (ul, item) {        
        var t = String(item.value).replace(
                new RegExp(this.term, "gi"),
                "<span class='ui-state-highlight'>$&</span>");
        return $("<li></li>")
            .data("item.autocomplete", item)
            .append("<a>" + t + "</a>")
            .appendTo(ul);
    };

Upvotes: 4

Adam
Adam

Reputation: 1371

If you are using new JQueryUI, You should replace this:

.data("autocomplete")._renderItem

to this: 

.data("uiAutocomplete")._renderItem

Upvotes: 2

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