JavaScript Tutorial/GUI Components/Autocomplete Textbox — различия между версиями

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Текущая версия на 08:24, 26 мая 2010

Autocomplete Textbox Example

/*------------------------------------------------------------------------------
 * JavaScript Library
 * Version 1.0
 * by Nicholas C. Zakas, http://www.nczonline.net/
 * Copyright (c) 2004-2005 Nicholas C. Zakas. All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *------------------------------------------------------------------------------
 */
 

<html> 
<head> 
 <title>Autocomplete Textbox Example</title> 
       <script type="text/javascript"> 
var isOpera = navigator.userAgent.indexOf("Opera") > -1;
var isIE = navigator.userAgent.indexOf("MSIE") > 1 && !isOpera;
var isMoz = navigator.userAgent.indexOf("Mozilla/5.") == 0 && !isOpera;
function textboxSelect (oTextbox, iStart, iEnd) { 
   switch(arguments.length) { 
       case 1: 
           oTextbox.select(); 
           break; 
       case 2: 
           iEnd = oTextbox.value.length; 
           /* falls through */ 
            
       case 3:          
           if (isIE) { 
               var oRange = oTextbox.createTextRange(); 
               oRange.moveStart("character", iStart); 
               oRange.moveEnd("character", -oTextbox.value.length + iEnd);      
               oRange.select();                                              
           } else if (isMoz){ 
               oTextbox.setSelectionRange(iStart, iEnd); 
           }                     
   } 
   oTextbox.focus(); 
} 
function textboxReplaceSelect (oTextbox, sText) { 
   if (isIE) { 
       var oRange = document.selection.createRange(); 
       oRange.text = sText; 
       oRange.collapse(true); 
       oRange.select();                                 
   } else if (isMoz) { 
       var iStart = oTextbox.selectionStart; 
       oTextbox.value = oTextbox.value.substring(0, iStart) + sText + oTextbox.value.substring(oTextbox.selectionEnd, oTextbox.value.length); 
       oTextbox.setSelectionRange(iStart + sText.length, iStart + sText.length); 
   } 
   oTextbox.focus(); 
} 
function autocompleteMatch (sText, arrValues) { 
   for (var i=0; i < arrValues.length; i++) { 
       if (arrValues[i].indexOf(sText) == 0) { 
           return arrValues[i]; 
       } 
   } 
   return null; 
} 
function autocomplete(oTextbox, oEvent, arrValues) { 
   switch (oEvent.keyCode) { 
       case 38: //up arrow  
       case 40: //down arrow 
       case 37: //left arrow 
       case 39: //right arrow 
       case 33: //page up  
       case 34: //page down  
       case 36: //home  
       case 35: //end                  
       case 13: //enter  
       case 9: //tab  
       case 27: //esc  
       case 16: //shift  
       case 17: //ctrl  
       case 18: //alt  
       case 20: //caps lock 
       case 8: //backspace  
       case 46: //delete 
           return true; 
           break; 
       default: 
           textboxReplaceSelect(oTextbox, String.fromCharCode(isIE ? oEvent.keyCode : oEvent.charCode)); 
           var iLen = oTextbox.value.length; 
           var sMatch = autocompleteMatch(oTextbox.value, arrValues); 
           if (sMatch != null) { 
               oTextbox.value = sMatch; 
               textboxSelect(oTextbox, iLen, oTextbox.value.length); 
           }  
           
           return false; 
   } 
} 
       </script> 
       <script> 
               var arrValues = ["red", "orange", "yellow", "green", "blue", "indigo", "violet", "brown"]; 
       </script> 
</head> 
<body> 
<h2>Autocomplete Textbox Example</h2> 
<P>Type in a color in lowercase:<br /> 
<input type="text" value="" id="txt1" onkeypress="return autocomplete(this, event, arrValues)" /></p> 
</body> 
</html>
Источник — «http://wbex.ru/index.php?title=JavaScript_Tutorial/GUI_Components/Autocomplete_Textbox&oldid=9181»