Selecting items in a listbox

Mark

Hi - is it possible to pass a comma delimeted list to a javascript
function, which will then loop through the list, and check against a
listboxs items, and if the value in the list, corresponds to an item in
the listbox, the listbox item should be 'selected' - I'd like this to
happen for a multiple select list box.

Something along the lines of (sorry, I'm not knowledgable in JS just
yet, but need to solve the problem):

function selItems()
{
selItemsInList('1,4,4,7,8');
}

selItemsInList(str)
{
for each checkitem in str
{
for each item in selectlist
{
if item.value == checkitem.value
{
selectlist.item.checked;
}
}
}

Thanks for any help,

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Jul 23 '05 #1

Subscribe Post Reply

2309

Mark

Hi - I've managed to get this working to an extent - I'm just not sure
how to get a comma delimmetted list, and iterate through that - here's
what I have so far, taking info from hard coded variables:

function pop(inForm)
{
var option0 = "1" //this is the part I want to be read from a comma
list
var option1 = "6"
var option2 = "3"
for (var i=0; i < 3; i++) {
for (var x=0; x < 3; x++)
{
if (inForm.lbMT.options[i].value==eval("option" + x))
{
alert("equal so selecting");
inForm.lbMT.options[i].selected=true;
}
}
}
}

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Jul 23 '05 #2

Matt Kruse

"Mark" <an*******@devdex.com> wrote:

Hi - is it possible to pass a comma delimeted list to a javascript
function, which will then loop through the list, and check against a
listboxs items, and if the value in the list, corresponds to an item in
the listbox, the listbox item should be 'selected'

You can use my general setInputValue() function on multiple select boxes,
like this:
setInputValue(document.forms[0].mySelect,"a,d,h");

The function, along with others, can be found in my validations lib at:
http://www.mattkruse.com/javascript/validations/

--
Matt Kruse
Javascript Toolbox: http://www.mattkruse.com/javascript/

Jul 23 '05 #3

Dennis M. Marks

In article <40*********************@news.frii.net>, Mark
<an*******@devdex.com> wrote:

Hi - I've managed to get this working to an extent - I'm just not sure
how to get a comma delimmetted list, and iterate through that - here's
what I have so far, taking info from hard coded variables:

function pop(inForm)
{
var option0 = "1" //this is the part I want to be read from a comma
list
var option1 = "6"
var option2 = "3"
for (var i=0; i < 3; i++) {
for (var x=0; x < 3; x++)
{
if (inForm.lbMT.options[i].value==eval("option" + x))
{
alert("equal so selecting");
inForm.lbMT.options[i].selected=true;
}

Set an array like this:

var optionList = ["a","b","c", etc];
for (x=0;x<optionList.length;x++) {
if (optionList[x] == ???) dothis
};

--
Dennis M. Marks
http://www.dcs-chico.com/~denmarks/
Replace domain.invalid with dcsi.net
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Jul 23 '05 #4

Mark

Hi Matt - thank you for this.

I tried the setInputValue on your site, and entered 1,3 and "1,3" - but
only one of the select items hilited - have I entered the numbers
incorrectly?

Thanks again for the help,

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Jul 23 '05 #5

Mark

Sorted - thanks for the help:

<script language="JavaScript">
function pop()
{
var optionList = arguments;
var ddl=document.getElementById("lbMT");
for (var i=0; i < 3; i++) {
for (var x=1;x<optionList.length;x++)
{
if (ddl.options[i].value==optionList[x])
{
ddl.options[i].selected=true;
}
}
}
}

</script>
</head>
<body>
<form>
<select name="lbMT" id="lbMT" size="10" multiple>
<option value="1">one</option>
<option value="2">two</option>
<option value="3">three</option>
</select>
<INPUT TYPE="button" VALUE="Populate Select List"
onClick='pop(this.form, 19,20,1,3,3,0)'>
</form>
</body>

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