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JavaScript - Copying Listbox Items...
Essentially, I have an ASP.net page where I load a record set server side and upload it into a listbox. I'm trying to do all the movement functionalities of the listbox items client side.
Specifically, I'm trying to figure out how to copy selected listbox items from one listbox to another -- on button click. I've searched for a while, but every example that I found moves the actual item into another listbox, I just want to copy the selected item to another listbox. I'm very new to JavaScript, so ff someone can provide an example or pseudo code, I would greatly appreciate it. Similar TutorialsHi, I would like to know how to add/remove items from listbox PERMANENTLY. Sad to say, all I have found are adding/removing items temporarily. Code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Untitled Page</title>
<script language="javascript" type="text/javascript" >
function addOption(selectbox,text,value )
{
var optn = document.createElement("OPTION");
optn.text = text;
optn.value = value;
selectbox.options.add(optn);
}
function addOption_list(selectbox)
{
addOption(document.drop_list.SubCat, "One","One");
addOption(document.drop_list.SubCat, "Two","Two");
addOption(document.drop_list.SubCat, "Three","Three");
addOption(document.drop_list.SubCat, "Four","Four");
addOption(document.drop_list.SubCat, "Five","Five");
addOption(document.drop_list.SubCat, "Six","Six");
}
function removeOptions(selectbox)
{
var i;
for(i=selectbox.options.length-1;i>=0;i--)
{
if(selectbox.options[i].selected)
selectbox.remove(i);
}
}
</script>
</head>
<body onload="addOption_list()";>
<form name="drop_list" action="default.aspx" method="post" >
<select id="SubCat" name="SubCat" MULTIPLE size="6" width="10"></select>
<input type="button" onclick="removeOptions(SubCat)"; value='Remove Selected' />
<input type="button" onclick="addOption_list()"; value='Add All' />
</form>
</body>
</html>
Please advise me on the problem. Hi, I would like to prevent the addition of duplicate items in the following situation. Firstly, I have a listbox with a few options such as Code: <select id="listbox" name="listbox" multiple="multiple" style="width: 580px;">
<option>Java</option>
<option>PHP</option>
<option>Perl</option>
<option>Javascript</option>
<option>C#</option>
<option>Powershell</option>
</select>
Next, I have a submit button with a textbox. The user will be able to submit new options into the listbox via the textbox and submit button. Therefore, I need to prevent the user from entering duplicate items into the listbox. How should I do? The following code is used to add items into the listbox. Code: function addItem()
{
var lst = document.getElementById('listbox'); // listbox control id
var newItem = prompt("Enter New Item","Enter Value Here");
//Option object is created for every option in a selection
//new Option([text[, value[, defaultSelected[, selected]]]]) // Syntax
if(newItem == null)
{
return false;
}
else
{
lst.options[lst.length] = new Option(newItem,newItem,false,false);
return false;
}
}
Hi there, I would like to sort the items regardless of uppercase/lowercase after moving them to another listbox. Here is my code, and I cannot figure out what is wrong with it. Code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Untitled Page</title>
<script language="javascript" type="text/javascript">
function MoveItem(unselectedLst, selectedLst)
{
var unselectedEmail = document.getElementById(unselectedLst);
var selectedEmail = document.getElementById(selectedLst);
var uValue = unselectedEmail.value;
var sValue = selectedEmail.value;
if ((uValue != null) && (sValue != null))
{
if( unselectedEmail.options.selectedIndex >= 0 )
{
var newOption = new Option(); // Create a new instance of ListItem
newOption.text = unselectedEmail.options[unselectedEmail.options.selectedIndex].text;
newOption.value = unselectedEmail.options[unselectedEmail.options.selectedIndex].value;
selectedEmail.options[selectedEmail.length] = newOption; //Append the item in selectedEmail
unselectedEmail.remove(unselectedEmail.options.selectedIndex); //Remove the item from unselectedEmail
//sort items in listbox in alpha order
arrTexts = new Array();
for(i=0; i<unselectedEmail.length; i++)
{
arrTexts[i] = unselectedEmail.options[i].text;
}
arrTexts.sort();
for(i=0; i<unselectedEmail.length; i++)
{
unselectedEmail.options[i].text = arrTexts[i];
unselectedEmail.options[i].value = arrTexts[i];
}
//sort items in listbox in alpha order
arrayTexts = new Array();
for(i=0; i<selectedEmail.length; i++)
{
arrayTexts[i] = selectedEmail.options[i].text;
}
arrayTexts.sort();
for(i=0; i<selectedEmail.length; i++)
{
selectedEmail.options[i].text = arrayTexts[i];
selectedEmail.options[i].value = arrayTexts[i];
}
}
}
else
{
alert('Select Item From The List. ');
}
}
</script>
</head>
<body>
<table width="300">
<tr>
<td>
<select id="ListBox1" name="ListBox1" size="6">
<option>One</option>
<option>Two</option>
<option>Three</option>
</select>
</td>
<td>
<p>
<input onclick="MoveItem('ListBox1', 'ListBox2');" type="button" value="->" />
</p>
<p>
<input onclick="MoveItem('ListBox2', 'ListBox1');" type="button" value="<-" />
</p>
</td>
<td>
<select id="ListBox2" name="ListBox2" size="6">
<option>allalong@msn.com</option>
<option>boys@hotmail.com</option>
<option>cy@yahoo.com</option>
<option>bread@hotmail.com</option>
<option>eetApple@ymail.com</option>
<option>applepie@gmail.com</option>
</select>
</td>
</tr>
</table>
</body>
</html>
G'day, How would I go about copying all the prototype functions AND the constructor from one object into another object, and then call them? Code: function myOriginal() {
alert('Hello');
}
myOriginal.prototype.example = function() {
alert('In example '+this.test);
}
function myNewThing() {
// Copy myOriginal into this object here
this.oldconstructor(); // Should now display "Hello"
this.test = 'from myNewThing';
this.example(); // Should now display "In example myNewThing"
}
I know I can use this.example.call(this), but that's not an acceptable solution. I want to deploy this style over dozens, potentially hundreds of objects. Thanks muchly, Your friend from server-side... Either I'm having a moment of stupidity, or have completely failed to understand a fundamental aspect of javascript. The code below is jquery, and uses jquery's extend() function, but I don't think that the issue has anything to do with that... does it? Code: $(document).ready(function(){
var obj1 = {
"name": "spud"
,"age": 32
}
var obj2 = obj1;
$.extend(obj2, {"location": "UK"});
console.log(obj1);
});
By my reasoning, obj1 shouldn't have location set. But it does. If this is something peculiar to jquery, then my apologies and I'll go off to the right forum - but is it? Is the line var obj2 = obj1; not making a copy of the original and leaving the original intact? Is it instead making some sort of reference to it? Why is changing the copy having an effect on the original?? I have 2 text boxes on my page. When the user clicks in one text box, I would like whatever is in there to be copied to the other text box. Is this possible? I have looked into it and onClick seems like it might do it but I can't get it to work. Thanks. I have 2 textareas, 1 which will be vissible, another that will be hidden. I have a function that mirrors (not in reversed lettering) the first textarea's input to the second. Code: function copy_data(val){
var messageText = document.getElementById(val.id).value
document.getElementById('message').innerHTML = messageText;
}
So that copies from : <textarea name="text_message" rows="4" id="text_message" style="direction:ltr;" onkeyup="copy_data(this)"></textarea><br/> To: <textarea name="message" rows="4" id="message" style="direction:ltr;"></textarea> Then I have another function which when I select text in the "text_message" textarea will apply a tag to it, however I don't want this tag to be vissible in the "text_message" textarea but rather in the "message" textarea. Code: function formatText(el,tag){
var selectedText = document.selection?document.selection.createRange().text:el.value.substring(el.selectionStart,el.selectionEnd);
if(selectedText!=''){
var newText=''+tag+''+selectedText+''+tag+'';
el.value=el.value.replace(selectedText,newText)
}
}
This effects from this checkbox: <input type="checkbox" id="bold1" name="bold1" onclick="formatText(message,'#28D')" checked="checked" > Could anyone please help me, I think I may have missed something somewhere, because it works if I point it back to "text_message" Hi everyone, Is there a shorter and cleaner way of performing the following: The objective is to get the value/input from the first set of textboxes in the form and copy them to other set of textboxes. Outline of the form is as follows: First set of textboxes Company Address City State Zip Country Select number of users -->1 2 3 User 1 Company Address City State Zip Country User 2 Company Div Address1 Address2 City State Zip Country User 3 Company Address City State Zip Country ============================================= At the moment the code looks like this where (comp,div, addra,addrb,city,state,zip and country) are the name attributes of the first set of text boxes and (comp1.....country1,comp2.....country2, comp3....country3) are the name attributes for the textboxes for user 1,2 and 3 respectively. Code: function compAddress(){
document.form.comp1.value = document.form.comp.value;
document.form.div1.value = document.form.div.value;
document.form.addra1.value = document.form.addra.value;
document.form.addrb1.value = document.form.addrb.value;
document.form.city1.value = document.form.city.value;
document.form.state1.value = document.form.state.value;
document.form.zip1.value = document.form.zip.value;
document.form.country1.value = document.form.country.value;
document.form.comp2.value = document.form.comp.value;
document.form.div2.value = document.form.div.value;
document.form.addra2.value = document.form.addra.value;
document.form.addrb2.value = document.form.addrb.value;
document.form.city2.value = document.form.city.value;
document.form.state2.value = document.form.state.value;
document.form.zip2.value = document.form.zip.value;
document.form.country2.value = document.form.country.value;
document.form.comp3.value = document.form.comp.value;
document.form.div3.value = document.form.div.value;
document.form.addra3.value = document.form.addra.value;
document.form.addrb3.value = document.form.addrb.value;
document.form.city3.value = document.form.city.value;
document.form.state3.value = document.form.state.value;
document.form.zip3.value = document.form.zip.value;
document.form.country3.value = document.form.country.value;
Thanks, Hi guys! i would like to ask for your assistance.. i am creating two template for my work.. and i would like to know what is the javascript that in one click i can copy and paste all the details from template #1 to template #2. considering that each field in template 1 will fall into the correct field in template #2.. http://img130.imageshack.us/i/25157983.jpg/ hope to hear from you soon. thanks! you may also email me at janshawn_54@yahoo.com Hi, I have a requirement where, on a link, when the user clicks, the app should copy all browser favorites and write to a db (table that has two columns, one with fav name and one col for the website link). Thoughts on how to get this done ? How can I read the the browser favorites from a javascript ? Thanks, Deepna Hello all, I am trying to copy the billing information to be the same as the shipping information when they select the checkbox. Everything seems to work except for the State field which is a drop down. Depending on what country they select, the state field will automatically populate. Does anyone know how I can copy the billing state to be the same as shipping as well? Text file attached. Thanks in advance. I am trying to populate a listbox using Javascript. The listbox is populated using the xml response from ajax request. Below is the code used for the same Code: var xmlDoc = xmlhttp.responseXML;
for (var i = 0; i < xmlDoc.getElementsByTagName("id").length; i++) {
traderlists.add(new Option(xmlDoc.getElementsByTagName("name")[i].childNodes[0].nodeValue, xmlDoc.getElementsByTagName("id")[i].childNodes[0].nodeValue));
}
This works fine for me. But i am facing performance issue here. some ajax requests retrieves xmls with around 11,000 nodes and this takes too much of time to populate the listbox. Can anyone please advice me with an better solution? Hi, Iam trying a simple fill listbox on the body load, but its not working. Can someone please help me on this Code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>
<script language="javascript" src="script.js"></script>
<body onload="fillCategory();">
<form id="drop_list" name="form1" method="post" action="">
<label>
<select name="Category" id="Category">
</select>
</label>
</form>
</body>
</html>
and my script.js: Code: function fillCategory(){
addOption(document.form1.Category, "Fiji", "Fiji", "");
addOption(document.form1.Category, "Australia", "Australia", "");
addOption(document.form1.Category, "New Zealand", "New Zealand", "");
}
Hi, I have an application wherein for one page I want to display a Listbox on selection of a radio button. There should be 2 radio buttons and when the user clicks on the 2nd one "My Process", a list box should be displayed with several options. Can anybody pls help me with this as I'm a beginner to JS.. Many thanks Pooja. I'm probably not allowed to request something like this, but since this is a small amount of code I think I should do it anyways :P Okey, so I have two listboxes and I want a tickbox to enable one listbox and disable one listbox as you tick a checkbox. I want one listbox disabled by default and the other enabled and then vice-verca the disable when you tick the box. If someone could supply me with that code I would be really greatful, butyou don't need to bother with the HTML, I should figure it out from the JS. Thanks in advance <3 Hi, I've been working on a company directory page where a listbox called "People" in a form called "people_form" contains 400 employee names. I made the box "multiple" just so I could have it big and easier to find names but I decided a search box would be really useful. I've looked up a few such search scripts but so far the two I've tried haven't worked. The latest one when it's installed on the page, nothing happens when you type characters into it (it's supposed to jump to an entry matching the first few letters). Although if I backspace then it selects EVERY name in the list Here's the current form with the input tag being the search box (oh the options are populated by java script): <form name="people_form"> <input type="text" id="realtxt" onkeyup="searchSel()"></input> <select onchange="display(this.value); return false;" multiple="multiple" id="People" name="People" style="border-style: none; height:198px; width:220px;"> <option value="">Loading</option> </select></form> And here's the actual search function in the head of the page in the script tags: function searchSel() { var input=document.getElementById('realtxt').value.toLowerCase(); var output=document.getElementById('People').options; for(var i=0;i<output.length;i++) { if(output[i].value.indexOf(input)==0){ output[i].selected=true; } if(document.forms[0].realtxt.value==''){ output[0].selected=true; } } } If you know of a script that will work properly I'd appreciate it. For convenience I'm looking for one that jumps to selections inside the listbox as opposed to one where you click a search button and get results somewhere else. Hi I've been working on a listbox full of employees for our company intranet. Each name has an onchange tag that calls up a floor map and that part works fine but I'd really like to populate the names from an XML list so it's easier for non-IT people to maintain. I've been doing alot of web searches on the subject which comes up alot but it's mostly just fragments of what I need being that I've got no javascript background. I found a helpful tutorial on javascriptkit but that wasn't for creating listboxes so I'm only part of the way there. This is the XML file I've got (there will eventually be 400 entries): <?xml version="1.0"?> <list> <employee> <name>##########</name> <office>1656</office> <officePH>(403)000-0000</officePH> <mobile>N/A</mobile> <email>##########</email> </employee> <employee> <name>#########</name> <office>1657</office> <officePH>(403)000-0000</officePH> <mobile>N/A</mobile> <email>###########</email> </employee> </list> The most important parts are the name which will be used as the text of the box and the office number which will determine which floorplan is displayed. I added the other information so I can potentially put it in a div display later but that can wait. Can anyone help point me to some good resources on this subject? Thanks. Hello, I'm trying to fill an array with the values of a listbox from a SQL query but somehow I can only get the first word of each registry Code:
var arrayX=[];
function getValue(){
var x=document.getElementById("combo_color");
for (var i = 0; i < x.options.length; i++) {
if(x[i].value!=''){
arrayX.push(x[i].value);
}
}
}
for example, with the color Green Karanka I only get Green inside the array, the same happens with any color with more than one word, any ideas? Thanks. hello I have a listbox full of names on a PHP website and was wondering if there was a way to grab the value during a double click to bring me to another form to display the name and information? |
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