i have a auto suggest script that does not work in firefox , works great on IE.
Code:
/*******************************************************
AutoSuggest - a javascript automatic text input completion component
Copyright (C) 2005 Joe Kepley, The Sling & Rock Design Group, Inc.
This library 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 library 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 library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*******************************************************
Please send any useful modifications or improvements via
email to joekepley at yahoo (dot) com
*******************************************************/
/********************************************************
The AutoSuggest class binds to a text input field
and creates an automatic suggestion dropdown in the style
of the "IntelliSense" and "AutoComplete" features of some
desktop apps.
Parameters:
elem: A DOM element for an INPUT TYPE="text" form field
suggestions: an array of strings to be used as suggestions
when someone's typing.
Example usage:
Please enter the name of a fruit.
<input type="text" id="fruit" name="fruit" />
<script language="Javascript">
var fruits=new Array("apple","orange","grape","kiwi","cumquat","banana");
new AutoSuggest(document.getElementById("fruit",fruits));
</script>
Requirements:
Unfortunately the AutoSuggest class doesn't seem to work
well with dynamically-created DIVs. So, somewhere in your
HTML, you'll need to add this:
<div id="autosuggest"><ul></ul></div>
Here's a default set of style rules that you'll also want to
add to your CSS:
.suggestion_list
{
background: white;
border: 1px solid;
padding: 4px;
}
.suggestion_list ul
{
padding: 0;
margin: 0;
list-style-type: none;
}
.suggestion_list a
{
text-decoration: none;
color: navy;
}
.suggestion_list .selected
{
background: navy;
color: white;
}
.suggestion_list .selected a
{
color: white;
}
#autosuggest
{
display: none;
}
*********************************************************/
function AutoSuggest(elem, suggestions)
{
//The 'me' variable allow you to access the AutoSuggest object
//from the elem's event handlers defined below.
var me = this;
//A reference to the element we're binding the list to.
this.elem = elem;
this.suggestions = suggestions;
//Arrow to store a subset of eligible suggestions that match the user's input
this.eligible = new Array();
//The text input by the user.
this.inputText = null;
//A pointer to the index of the highlighted eligible item. -1 means nothing highlighted.
this.highlighted = 0;
//A div to use to create the dropdown.
this.div = document.getElementById("autosuggest");
//Do you want to remember what keycode means what? Me neither.
var TAB = 9;
var ESC = 27;
var KEYUP = 38;
var KEYDN = 40;
//The browsers' own autocomplete feature can be problematic, since it will
//be making suggestions from the users' past input.
//Setting this attribute should turn it off.
elem.setAttribute("autocomplete","off");
//We need to be able to reference the elem by id. If it doesn't have an id, set one.
if(!elem.id)
{
var id = "autosuggest" + idCounter;
idCounter++;
elem.id = id;
}
/********************************************************
onkeydown event handler for the input elem.
Tab key = use the highlighted suggestion, if there is one.
Esc key = get rid of the autosuggest dropdown
Up/down arrows = Move the highlight up and down in the suggestions.
********************************************************/
elem.onkeydown = function(ev)
{
var key = me.getKeyCode(ev);
switch(key)
{
case TAB:
me.useSuggestion();
break;
case ESC:
me.hideDiv();
break;
case KEYUP:
if (me.highlighted > 0)
{
me.highlighted--;
}
me.changeHighlight(key);
break;
case KEYDN:
//alert(me.highlighted)
if (me.highlighted < (me.eligible.length - 1))
{
//alert(me.highlighted)
me.highlighted++;
}
me.changeHighlight(key);
break;
}
};
/********************************************************
onkeyup handler for the elem
If the text is of sufficient length, and has been changed,
then display a list of eligible suggestions.
********************************************************/
elem.onkeyup = function(ev)
{
var key = me.getKeyCode(ev);
switch(key)
{
//The control keys were already handled by onkeydown, so do nothing.
case TAB:
case ESC:
case KEYUP:
case KEYDN:
return;
default:
if (this.value != me.inputText && this.value.length > 0)
{
me.inputText = this.value;
me.getEligible();
me.createDiv();
me.positionDiv();
me.showDiv();
}
else
{
me.hideDiv();
}
}
};
/********************************************************
Insert the highlighted suggestion into the input box, and
remove the suggestion dropdown.
********************************************************/
this.useSuggestion = function()
{
//alert(this.eligible[this.highlighted])
if (this.highlighted > -1)
{
this.elem.value = this.eligible[this.highlighted];
this.hideDiv();
//It's impossible to cancel the Tab key's default behavior.
//So this undoes it by moving the focus back to our field right after
//the event completes.
setTimeout("document.getElementById('" + this.elem.id + "').focus()",0);
}
};
/********************************************************
Display the dropdown. Pretty straightforward.
********************************************************/
this.showDiv = function()
{
this.div.style.display = 'block';
};
/********************************************************
Hide the dropdown and clear any highlight.
********************************************************/
this.hideDiv = function()
{
this.div.style.display = 'none';
this.highlighted = -1;
};
/********************************************************
Modify the HTML in the dropdown to move the highlight.
********************************************************/
this.changeHighlight = function()
{
var lis = this.div.getElementsByTagName('LI');
//for (i in lis)
for (var i=0, j=lis.length; i<j; i++)
{
var li = lis[i];
//alert(li)
if (this.highlighted == i)
{
li.className = "selected";
//alert(li.className)
}
else
{
li.className = "";
}
}
};
/********************************************************
Position the dropdown div below the input text field.
********************************************************/
this.positionDiv = function()
{
var el = this.elem;
var x = 0;
var y = el.offsetHeight;
//Walk up the DOM and add up all of the offset positions.
while (el.offsetParent && el.tagName.toUpperCase() != 'BODY')
{
x += el.offsetLeft;
y += el.offsetTop;
el = el.offsetParent;
}
x += el.offsetLeft;
y += el.offsetTop;
this.div.style.left = x + 'px';
this.div.style.top = y + 'px';
};
/********************************************************
Build the HTML for the dropdown div
********************************************************/
this.createDiv = function()
{
var ul = document.createElement('ul');
//Create an array of LI's for the words.
for (i in this.eligible)
{
var word = this.eligible[i];
var li = document.createElement('li');
var a = document.createElement('a');
a.href="javascript:false";
a.innerHTML = word;
li.appendChild(a);
if (me.highlighted == i)
{
li.className = "selected";
}
ul.appendChild(li);
}
this.div.replaceChild(ul,this.div.childNodes[0]);
/********************************************************
mouseover handler for the dropdown ul
move the highlighted suggestion with the mouse
********************************************************/
ul.onmouseover = function(ev)
{
//Walk up from target until you find the LI.
var target = me.getEventSource(ev);
while (target.parentNode && target.tagName.toUpperCase() != 'LI')
{
target = target.parentNode;
}
var lis = me.div.getElementsByTagName('LI');
for (i in lis)
{
var li = lis[i];
if(li == target)
{
me.highlighted = i;
break;
}
}
me.changeHighlight();
};
/********************************************************
click handler for the dropdown ul
insert the clicked suggestion into the input
********************************************************/
ul.onclick = function(ev)
{
me.useSuggestion();
me.hideDiv();
me.cancelEvent(ev);
return false;
};
this.div.className="suggestion_list";
this.div.style.position = 'absolute';
};
/********************************************************
determine which of the suggestions matches the input
********************************************************/
this.getEligible = function()
{
//this.eligible = new Array();
for (i in this.suggestions)
{
var suggestion = this.suggestions[i];
if(suggestion.toLowerCase().indexOf(this.inputText.toLowerCase()) == "0")
{
this.eligible[this.eligible.length]=suggestion;
//this.eligible[]=suggestion;
}
}
};
/********************************************************
Helper function to determine the keycode pressed in a
browser-independent manner.
********************************************************/
this.getKeyCode = function(ev)
{
if(ev) //Moz
{
return ev.keyCode;
}
if(window.event) //IE
{
return window.event.keyCode;
}
};
/********************************************************
Helper function to determine the event source element in a
browser-independent manner.
********************************************************/
this.getEventSource = function(ev)
{
if(ev) //Moz
{
return ev.target;
}
if(window.event) //IE
{
return window.event.srcElement;
}
};
/********************************************************
Helper function to cancel an event in a
browser-independent manner.
(Returning false helps too).
********************************************************/
this.cancelEvent = function(ev)
{
if(ev) //Moz
{
ev.preventDefault();
ev.stopPropagation();
}
if(window.event) //IE
{
window.event.returnValue = false;
}
}
}
//counter to help create unique ID's
var idCounter = 0;
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