Restrict User Input

The following example demonstrates how to restrict the user input in the AutoComplete widget.

     <div id="example">
      <div id="shipping">
        <label for="countries" class="info">Choose shipping countries:</label>
        <input id="countries" />
        <div class="hint">Start typing the name of an European country</div>
      </div>
      <script>
        $(document).ready(function () {
          var data = [
            "Albania",
            "Andorra",
            "Armenia",
            "Austria",
            "Azerbaijan",
            "Belarus",
            "Belgium",
            "Bosnia & Herzegovina",
            "Bulgaria",
            "Croatia",
            "Cyprus",
            "Czech Republic",
            "Denmark",
            "Estonia",
            "Finland",
            "France",
            "Georgia",
            "Germany",
            "Greece",
            "Hungary",
            "Iceland",
            "Ireland",
            "Italy",
            "Kosovo",
            "Latvia",
            "Liechtenstein",
            "Lithuania",
            "Luxembourg",
            "Macedonia",
            "Malta",
            "Moldova",
            "Monaco",
            "Montenegro",
            "Netherlands",
            "Norway",
            "Poland",
            "Portugal",
            "Romania",
            "Russia",
            "San Marino",
            "Serbia",
            "Slovakia",
            "Slovenia",
            "Spain",
            "Sweden",
            "Switzerland",
            "Turkey",
            "Ukraine",
            "United Kingdom",
            "Vatican City"
          ];

          // Create the UI of the AutoComplete.
          $("#countries").kendoAutoComplete({
            dataSource: data,
            filter: "startswith",
            placeholder: "Select country...",
            change: function() {
              var found = false;
              var value = this.value();
              var data = this.dataSource.view();

              for(var idx = 0, length = data.length; idx < length; idx++) {
                if (data[idx] === value) {
                  found = true;
                  break;
                }
              }

              if (!found) {
                this.value("");
                alert("Custom values are not allowed");
              }
            }
          });
        });
      </script>
      <style scoped>
        .info {
          display: block;
          line-height: 22px;
          padding: 0 5px 5px 0;
          color: #36558e;
        }

        #shipping {
          width: 482px;
          height: 152px;
          padding: 110px 0 0 30px;
          background: url('../content/web/autocomplete/shipping.png') transparent no-repeat 0 0;
          margin: 100px auto;
        }

        .k-autocomplete
        {
          width: 250px;
          vertical-align: middle;
        }

        .hint {
          line-height: 22px;
          color: #aaa;
          font-style: italic;
          font-size: .9em;
          color: #7496d4;
        }
      </style>
    </div>

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