Prevent autocomplete jquery-ui from accepting words that are not in the list

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I want to make my input autocomplete not accept any words that are not in a list. I am using the code below, taken from the jQuery-ui 1.12.1 website itself. 

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>jQuery UI Autocomplete - Multiple values</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
  <link rel="stylesheet" href="/resources/demos/style.css">
  <script src="https://code.jquery.com/jquery-1.12.4.js"></script><scriptsrc="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
  <script>
  $( function() {
    var availableTags = [
      "ActionScript",
      "AppleScript",
      "Asp",
      "BASIC",
      "C",
      "C++",
      "Clojure",
      "COBOL",
      "ColdFusion",
      "Erlang",
      "Fortran",
      "Groovy",
      "Haskell",
      "Java",
      "JavaScript",
      "Lisp",
      "Perl",
      "PHP",
      "Python",
      "Ruby",
      "Scala",
      "Scheme"
    ];
    function split( val ) {
      return val.split( /,\s*/ );
    }
    function extractLast( term ) {
      return split( term ).pop();
    }
 
    $( "#tags" )
      // don't navigate away from the field on tab when selecting an item
      .on( "keydown", function( event ) {
        if ( event.keyCode === $.ui.keyCode.TAB &&
            $( this ).autocomplete( "instance" ).menu.active ) {
          event.preventDefault();
        }
      })
      .autocomplete({
        minLength: 0,
        source: function( request, response ) {
          // delegate back to autocomplete, but extract the last term
          response( $.ui.autocomplete.filter(
            availableTags, extractLast( request.term ) ) );
        },
        focus: function() {
          // prevent value inserted on focus
          return false;
        },
        select: function( event, ui ) {
          var terms = split( this.value );
          // remove the current input
          terms.pop();
          // add the selected item
          terms.push( ui.item.value );
          // add placeholder to get the comma-and-space at the end
          terms.push( "" );
          this.value = terms.join( ", " );
          return false;
        }
      });
  } );
  </script>
</head>
<body>
 
<div class="ui-widget">
  <label for="tags">Tag programming languages: </label>
  <input id="tags" size="50">
</div>
 
 
</body>
</html>
    
asked by anonymous 14.01.2018 / 13:51

1 answer

0

You can add new events by checking if the word you typed exists in the list, which is an array. If the word is not in the list, it is excluded from the field.

I added two events blur and mouseleave to trigger the function (see comments in the code): 

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>jQuery UI Autocomplete - Multiple values</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script><linkrel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/themes/smoothness/jquery-ui.css">
   <script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js"></script><script>functionremDup(){//removeduplicadasvartags=$("#tags").val().split(",");
      var dup = [];
      $.each(tags, function(i, e) {
         if($.inArray(e.trim(), dup) == -1) dup.push(e.trim());
      });
      $("#tags").val(dup.join(", "));
  }
  
  $( function() {
    var availableTags = [
      "ActionScript",
      "AppleScript",
      "Asp",
      "BASIC",
      "C",
      "C++",
      "Clojure",
      "COBOL",
      "ColdFusion",
      "Erlang",
      "Fortran",
      "Groovy",
      "Haskell",
      "Java",
      "JavaScript",
      "Lisp",
      "Perl",
      "PHP",
      "Python",
      "Ruby",
      "Scala",
      "Scheme"
    ];
    function split( val ) {
      return val.split( /,\s*/ );
    }
    function extractLast( term ) {
      return split( term ).pop();
    }
 
    $( "#tags" )
      // don't navigate away from the field on tab when selecting an item
      .on( "keydown", function( event ) {
        if ( event.keyCode === $.ui.keyCode.TAB &&
            $( this ).autocomplete( "instance" ).menu.active ) {
          event.preventDefault();
        }
      })

      // AQUI ONDE COLOQUEI A FUNÇÃO
      .on( "blur mouseleave", function(){ // capturo os eventos
         var tags = $( this ).val().split(","); // converto o valor do campo em array
         var invs = [];
         for(let item of tags){ // percorro a array da lista procurando os valores do campo
             if(availableTags.indexOf(item.trim()) != -1){ // não achou na lista
               invs.push(item);
             }
         }
         invs.push("");
         this.value = invs.join(",")+" ";

      })
      
          
      .autocomplete({
        minLength: 0,
        source: function( request, response ) {
          // delegate back to autocomplete, but extract the last term
          response( $.ui.autocomplete.filter(
            availableTags, extractLast( request.term ) ) );
        },
        focus: function() {
          // prevent value inserted on focus
          return false;
        },
        select: function( event, ui ) {
          var terms = split( this.value );
          // remove the current input
          terms.pop();
          // add the selected item
          terms.push( ui.item.value );
          // add placeholder to get the comma-and-space at the end
          terms.push( "" );
          this.value = terms.join( ", " );
          remDup();
          return false;
        }
      })
      
      remDup();
  });
  
  </script>
</head>
<body>
 
<div class="ui-widget">
  <label for="tags">Tag programming languages: </label>
  <input id="tags" value="Java, Java, C, " size="50">
  <br>
   <input type="button" value="Verificar" onclick="verificar()">
</div>
 
 
</body>
</html>
    
14.01.2018 / 17:58
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