<SELECT> Javascript Alternative
Mar 29, 2006
I am currently recoding my website to perform more efficiently. By performing more efficiently I mean that I will be recoding the server side mostly.
One Particular idea I had was for select boxes. Right now for a page that lists the information for a user (say country of birth for example, which has over 200 option values) the php has to print all the values of the countries in a loop as <option></option>. The reason why it has to print them out each time is because it has to select the users country name.
Considering that there are 200+ values and there are also about 8 other select boxes that also have their information to be selected and printed thru php loop, it can get to be quite a strain on the CPU (when a bunch of users are all doing it).
So I decided to use a javascript function for each box to select the correct option value to be selected according to what the user has chosen beforehand. It generally is the same thing only the client is doing the job and not the webserver.
So what I am asking here is that should I reply on the javascript to do this? I have the paranoia that there will be some occurances where the client doens't have javascript or the version of javascript wont support the DOM features that are used to perform the job.
So for the average browser to be doing something like this, should I still be worried about this or should I go back to using the server side to handle the selected box values???
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Jul 20, 2005
I want to use an anchor tag to invoke some javascript and I've read that it's bad form to use <a href="javascript:foo()">
I've read endless usenet posts and hint sites on the net, they all suggest different things and I can't get any kind of consistency, and I can't find any solution that works properly for IE, opera and mozilla.
many of the recommended solutions go something like this:
<a href="javascript:void(0);" onclick="foo()" />
this generates an <a> that looks like a hyperlink (good) and it invokes foo() as well (also good). the problem is that if in function foo, I put
window.location.href = "some new url";
it just seems to get ignored. If I miss out the href altogether, the link works but it's not formatted as a hyperlink.
All I'm trying to do is make something that looks like a normal hyperlink but whereby I can build the URL with some javascript rather than having it coded into the HTML, and I have to say it's driving me mad!!.
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Apr 13, 2003
its about redirection using javascript when the select box is being invoke onChange command is being change it should be able to redirect that page dynamically~~ tq
PHP Code:
<?php
echo "<select name="navi" ONCHANGE="submit();">";
echo "<option value=Ƈ'>hi</option>";
echo "<option value=ƈ'>hoi</option>";
echo "</select>";
echo "<script language='JavaScript'>";
echo "function submit(){";
echo "if(document.document1.navi.options[0].selected){";
echo "window.location='seek_data.php'}";
echo "}"; //if
echo "</script>";
?>
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Oct 6, 2004
I am really crazy on my javascript because I don't know what is the error about it (the red line). The purpose is that when select the value from "tradetermno" select box, then shows the related list in the second select box "tradetermdetailno".
<FORM action="somewhere" method="POST" name="contractform">
...
...
<SELECT size="1" name="tradetermno" document.contractform.tradetermno.options[document.contractform.tradetermno.selectedIndex].value)">
<OPTION value="1" SELECTED>FOB </OPTION>
<OPTION value="2">C&F </OPTION>
</SELECT>
<SELECT size="1" name="tradetermsremarkno">
</SELECT>
...
...
</FORM>
...
...
The error the IE shown is "Object expected". Would anyone tell me what's wrong of my code?
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May 24, 2005
Does any of you know how to create a drop-down list that allows the user to search the drop-down list using two characters, that is, the user will click on two characters of the keyboard which will be the first two characters of the word they are searching for in the list, which will be match to the first two characters of the the first word that has those two characters first.
For instance, we are use to searching in a drop-down list using one character which matches to the first letter of the word first word in the list in alphabetic order.
Now, what I am looking for is to search with two characters; which will match with the first two letters of the words in the list in alphabetic order.
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Jul 28, 2007
<head>
<body>
<td width="346"><table width="346" border="0" cellpadding="0" cellspacing="0">
<tr>
<td width="63" height="5" valign="top" class="myWebEmbedNURLFont"> URL</td>
<td id="urlForm" width="283" align="left" valign="top"><input name="embedCode" type="text" value="testingtestingtestingtestingtestingtestingtestingtestingtestingtestingt estingtesting" class="myWebEmbedNURLInputFont" size="47" onClick="javascript:document.urlForm.embedCode.focus();document.urlForm.embedC ode.select();" readonly="true"></td>
</tr>
</td></body>
a very draft code, what i wanna do is when i click on the form, the value will auto be selected. but i cant seem to do so, and i am not very sure of the problem.
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Jul 23, 2005
I have a dropdown box containing about 10 values.
I would like to create a separate href on my page that when clicked will
make the drop down box go to a specific value. I do not want to have to
refresh the page to do this. Is it possible to have that sort of control
over a drop down box.?
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Jan 20, 2006
i tried to create a dropdown menu and use the option as a control to
change content inside another text area
the code is like this:
<select name="xxxx"><option onclick="changeunitprice(29.87)"
value="1744"/>
the function changeunitprice() is called when an option is selected
problem is it works well with firefox but not IE
any ideas? or is there anyway can make same effect in IE?
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Aug 1, 2006
iam creating a multiselect menu in javascript the code for that is as follows:
"<select id="groups" name="groups[]" size="4" multiple>"
"<option value=x>xyz</option>"
..
..
..
..
"</select>"
iam doing this completely in javascript. Its a dynamic menu. So how can
retrieve the values in javascript itself .
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Feb 6, 2007
I want to be able to select a word when I highlight over any part of
the word. When I say select the word, I want it to be highlighted as
if I left clicked my mouse and dragged the cursor along the word. I
want to do this so a user when putting the mouse over the word can
quickly hit <ctrl>c to copy the word, without having to manually
highlight the word.
This will be used multiple times in the script for specific words, not
for every word in the script. For example:
User Password
------- ---------------
admin adminUser
dba sysDbAPa$$
So in my above example when mousing over either of the passwords, the
entire password would be highlighted so I can quickly copy it.
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Oct 15, 2007
I have a page that dynamically draws checkboxes with a combo. I'm
then attempting to use the following code to iterate through each combo
box and change the value to match the text box. Code:
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Sep 16, 2006
I've searched everywhere for this but can't find it. How can I select a particular value in a select dropdown box using javascript? (I.E a select box has 5 values, how can I select the 3rd?)
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May 29, 2002
Is it possible to check an option/select box to see if it still has data in it? I'd like to be able to stop a user from updating a file IF the field they are copying from still has content in it. I.e.
BOX 1 BOX 2
1 3
4
6
2
5
So the button will display an error message (e.g. you aint sent the entire lot over)
I've tried to attempt it but my mind cannot really handle anything more than (Check kettle for water, IF water equal or less than 1 cup full, then fill kettle with water, If kettle equal to or greater than 3 then STOP).
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Mar 16, 2010
I have been using RHS, but in IE, it sometimes doesn't work the way I expect. Also, last update was a long time ago.
So, does anyone know better alternative for RSH?
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Jul 3, 2006
I want to protect the data on my web page ; I want to make it viewing-only.
I've already disabled right-click, but can I take it one step further, and disable certain pulldown menus like copy, select-all, or file-save-as?
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Jan 25, 2007
I am trying to update all Select boxes on a page dynamically using
javascript, I simple want to change the selected item in each select
box when a tick box is pressed on the page. Each Select box is named
in the same convention ie. ddl_DeliveryStatus_ and then the recordID
and contains the same options in the same order. The number of select
boxes changes every time the page is loaded as this is all built using
ASP linked to a database.
I am hoping there is an array or collection or something similar I can
simply reference to do this, but an struggling to find the answer.
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Dec 12, 2005
How would I go about simply populating an HTML select statement from a JavaScript function. You see I have several HTML select statements on one page which are identical (sometimes repeated multiple times) so I wanted to try and cut down on these multiple instances and just have the values hard coded once (in a JavaScript function perhaps) and then called whenever they are needed. Could anyone advice me please, would this be easy to do?
I have the following HTML select statement hard coded:
<select name="bodyFontType">
<option value="">Select Font</option>
<option value="Verdana">Verdana</option>
<option value="Arial">Arial</option>
<option value="Tahoma">Tahoma</option>
<option value="Trebuchet MS">Trebuchet MS</option>
</select>
Would I use an onLoad property on the select statement to call a function which creates an array and then pushes through the values?
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Jan 28, 2002
Question: How hard is the following to do in javascript and does anyone have a good example of this in use (aka how do you do it? )
4 drop down boxes all on one page. I have 4 items in the list of the first drop down box.
Red
Blue
Green
Orange
When I select one, I want the choice to be taken out of the list for the second drop down box. So if I select Blue in Drop Down #1, Drop Down #2 now has the option of
Red
Green
Orange
If I select Red from the list the Drop Down #3 now has
Green
Orange
Then if i select Orange, the last drop down has only one value and that is Green.
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Oct 17, 2007
I have two text boxes one with months in "January, Febuary..." but as not every month has the same ammount of days i need the second select box to change to instead of having options 1-30 it has 1-28 or what ever depending on what month is selected.
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Jul 23, 2005
Currently I use an onbeforeunload method, to do call various tidy up
methods when a user exits my web application - however I now need to add
additional support, for users migrating to Sun's JVM.
My understanding that the onbeforeunload call is a Microsoft one, and
the net result of having it in a page used by a SUN JVM user is that the
browser does not close.
Does anyone know of an alternative to this method, that is supported
by Sun's JVM?
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Sep 30, 2005
In my webpage I have an embedded Windows Media Player and an unordered
list with a table of contents.
When playing a video, the Windows Media Player is triggering events for
new 'chapters'.
The corresponding chapter in the unordered list is then highlighted
with css.
The list can contain up tot 100+ items. Because the page itself should
fit the screen without scrolling, i put the list in a scrolling div.
I also want the div to scroll automatically in order to keep the
current chapter inside the visible scope of the div.
Right now i do this by initually creating an anchor for each listitem.
When an chapterswitch event occurs i scroll to the corresponding
chapter with the folling line of Javascript code:
window.location = "#" + ListItemId;
There is one problem; the annoying tick sounds in IE. For my
application it is not rare to have 25 'chapters' switched in one
minute, so that's an awful lot of ticking.
I was wondering if it is possible to automatically scroll up or down to
a specific point in a div without the browser making any sounds.
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Jul 20, 2005
I was wondering if anyone can help me? I am having some problems wit
the <noscript> tag.
I actually use it to block banner advertisements from being displaye
in my website. I have used it at the <body> tag section and look
something like this:
<noscript>
<body>
</noscript>
What it does is stop the banner advertisement offered in most fre
websites from loading.
My question is how come it does not stop the banner from loading if
was to view the webpage in my Pocket PC using Pocket Internet Explore
Pocket IE)?
Everytime I load the page in Pocket IE, it displays a standard banne
that is found in all pages viewed using Pocket IE. I looked around fo
some answers and I found out that Pocket IE found in the Pocket PC 200
does not support the <noscript> tag.
Is there another way around this? I have written some pages that wil
load in my Pocket PC and I find it very annoying to see the banne
advertisement at the top. Code:
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Feb 28, 2011
Is there an other way to link to an element on the same page without using anchor URLs?
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Dec 7, 2006
I was wondering if there was an addLoadEvent alternative, that could be used before all images are loaded? I think it's something like when the DOM is ready...
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Aug 29, 2009
this is the code I'm working on:
Code:
var tabs = new Control.Tabs('menu');
var pattern = 'tab=';
var nStr = location.href;
if(nStr.match(new RegExp (pattern,'gi'))){
var id = nStr.split(pattern);
[Code]...
It searches for the query string 'tabs=' and then splits the result to get the id of the tab. Then it uses this to set the active tab. If the url doesn't include the query string it set the tab to the first one.
The code works but it uses Eval to convert the id string (id[1]) to a variable and I was wondering if there was an alternative.
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Jul 23, 2005
Is there a more concise way to do something like the the
desired code below?
The gripe is with the try-catch syntax. It takes *way* too
many lines of code to evaluate a conditional expression
when zero or more parts of the conditional expression may
trigger an error. In this case, the trigger is a call to
a non-defined (null) object.
In other words, how can you do a more simple 'try' statement
that simply spits out true or false, depending on whether
the 'tried' code threw an error or not?
Defining a function don't seem to work because you
can't pass the 'try' code as an argument. Extending the
'Global' constructor is not an option, so now what? Code:
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