I am dynamically generating a dropdown list on the page when a user loads it. I'd like to get the value of the dropdown using jquery or javascript.
The tricky part is that the dropdown will have a value as such:
"I love Rabbits ($19.95)"
I want to get the value of the dropdown and then isolate the value inside of the brackets.
Any ideas?
Cheers!
Getting the value is easy, use val(). That will be a string.
Then you just grab the value with a regex, probably with a capture group; for instance:
var value, m, innerValue;
value = $("selector for select box").val();
m = /\(([^)]+)/.exec(value);
if (m) {
innerValue = m[1];
}
That regex says: "Find a ( and then capture everything following it that isn't a )". Then we take the value of the capture group.
Could you not have your select in the following format:
<select name="opinions_price">
<option value="19.45">I love rabbits (£19.45)</option>
<option value="12.45">I hate parakeets (£12.45)</option>
<option value="3.24">I am indifferent to possums (£3.24)</option>
</select>
Then simply do:
var price = $('select option:selected').val();
If you want to use the data attributes instead (assume the select is in a loop, you know how to do that):
<select name="opinions_price">
<?php foreach($things as $thing) { ?>
<option data-price="<?php echo $thing['price']; ?>" data-id="<?php echo $thing['id']; ?>">[..]</option>
<?php } ?>
</select>
Then simply do:
var price = $('select option:selected').data('price');
var id = $('select option:selected').data('id');
Saves a (possibly) expensive Regex?
Related
I have the next selectbox in HTML:
<select id="listbox-taskStatus" class="selectpicker">
<option status="0">In progress</option>
<option status="1">Not started</option>
<option status="2">Done</option>
<option status="3">Failed</option>
</select>
I want to read the attribute value from selected option.
If just to take the value, it's simple:
var value = $('#listbox-taskStatus').val();
But what should I do, if I want to get the attribute value from selected option?
I know, that .attr() must help, but when I tried to use it I've got the incorrect result.
I've tried the next:
var status = $('#listbox-taskStatus option').attr('status');
But the returned value is always 0 despite on fact I was selecting different option.
What's wrong, how to solve my problem?
Use :selected Selector
var status = $('#listbox-taskStatus option:selected').attr('status');
However, I would recommend you to use data- prefixed attribute. Then you can use .data()
var status = $('#listbox-taskStatus option:selected').data('status');
DEMO
var optionAttr1 = $('#listbox-taskStatus').find('option:selected').attr("status");
var optionAttr = $('#listbox-taskStatus option:selected').attr("status");
I'm using Select2 3.4.5 for create select boxes,
I use this code for creatre a Multi-Value Select Boxe and everything is fine.
<select id="e1" name="mydata" multiple>
<option value="D1">Data1</option>
<option value="D2">Data2</option>
<option value="D3">Data3</option>
</select>
...
<script>
$("#e1").select2();
</script>
For get multiple selected values of select box in php I have to modify name="mydata" by name="mydata[]", and in PHP I get values by this code:
<?php
foreach ($_POST['mydata'] as $names) {
print "You are selected $names<br/>";
}
?>
But my question: How can I send selected values of select box to PHP as string to recover in php like this : 'D1,D2,D3' , and thanks.
Edit:
I want to send the data as string, not receive it as an array then
change it as string
Server-side with PHP
Ideally you would do this with PHP once the value is sent. To convert the selected items just want to implode the array
$names=implode(',', $_POST['mydata']);
Where $_POST['mydata'] is an array
[0]=>'D1',
[1]=>'D2',
[2]=>'D3'
implode(',', $_POST['mydata']) would be 'D1,D2,D3'
Client-side with jQuery
Your title says "send selected values of select box to PHP as string". You would do that in JS by catching the submit event of the form and using .join() to change the value of that field.
$('#formid').on('submit', function(){
$('#e1').val($('#e1').val().join(','));
});
Your form (not given) would need an id <form id="formid" ...>
If you want a client-side solution, try getting the val() and calling join():
$('#e1').val().join()
http://jsfiddle.net/gwgLV/
You can do it with javascript.
<select id="e1" name="mydata" multiple>
<option value="D1">Data1</option>
<option value="D2">Data2</option>
<option value="D3">Data3</option>
</select>
<button id="but" onclick="now()">Show selected values</button>
javascript code
function getSelectValues(select) {
var result = [];
var options = select && select.options;
var opt;
for (var i=0, iLen=options.length; i<iLen; i++) {
opt = options[i];
if (opt.selected) {
result.push(opt.value || opt.text);
}
}
return result;
}
function now(){
var el = document.getElementsByTagName('select')[0];
var x = getSelectValues(el);
alert(x);
}
Demo here
Instead of alert store in a variable and send it along with the rest of the form data. Or you can use join (as mentioned in other answers ) to send it over post to php.
I want to create a PHP array of a select list. The list have dynamic options, the options are filled with the help of javascript. I want to get all the options on next page.
So I want to create an array of options. Is there any another way to complete this stuff?
Can anybody help me out? Thank you so much in advance.
<script type = "text/javascript">
var val = "";
function removeOptions(selectbox) {
val = selectbox.value;
for (var i = selectbox.options.length-1; i>=1; i--) {
if (selectbox.options[i].selected) {
addOption(document.form1.list2,val,val);
selectbox.remove(i);
document.form1.list1.focus();
}
}
}
function addOption(selectbox,optiontext,optionvalue ){
var optn = document.createElement("OPTION");
optn.text = optiontext;
optn.value = optionvalue;
selectbox.options.add(optn);
}</script>
//list1
<select name="list1" size="7" multiple="multiple" id="jumpMenu" onchange="removeOptions(this)" style="width:200px">
<option>Choose Area...</option>
<?php foreach($dbh->query($sql) as $row){
$a=$row['name'];?>
<option value="<?php echo $a?>"><?php echo $a?></option>
<?php }?>
</select>
//list2
<select name="list2" size="7" multiple="MULTIPLE" id="list2" style="width:170px">
</select>
First: if You want to use multiple with select box, then this selectbox's name have to contain sharp brackets: name="list1[]" and name="list2[]" - this way a PHP will know that this is an array of values.
Second: learn jQuery - though it may seem hard in the beginning it will save You a lot of time and browser-compatibility problems in the future. And jQuery will save Your a*s many times in the future.
For Your purpose I would recommend not just using onchange events but implement additional 4 buttons between the two multiselectboxes that will move the selected options from one to another or all from one to another. This kind of multiselect looks like the one pictured below.
By the first button >> all the options from 1. select are moved to the second one and vice versa with the 4th button <<.
By the second button > only the selected option(s) is(are) moved the second select and vice versa with the third button <.
By this You only catch the click event on the buttons... That is really easy using jQuery...
I have looked for answers on here and have not found anything that directly can help me so I am going to ask here. I have a form with multiple select boxes:
<select name="acabados[]">
<option value="1">ABC</option>
<option value="2">DEF</option>
<option value="3">GHI</option>
</select>
<select name="acabados[]">
<option value="1">ABC</option>
<option value="2">DEF</option>
<option value="3">GHI</option>
</select>
As you can see they are the exact same select box. I have told the client to use select multiple but he wants it this way. The user can add as many as these select boxes as they desire (so it could be up to 20 select boxes at a time) and I need to get the value (1 or 2 or 3) and the text inside the option. It is then an array that I need to break down cause I need to add the total values of the select boxes in php. I could either use jquery for collecting the values or php, which ever is easier. Thank you in advance for any help!!
Try this, it will work for dynamically created select elements too.
$(document).on('change', 'select[name="acabados[]"]', function(){
var total = 0;
$('select[name="acabados[]"]').each(function(){
total += parseInt($(this).val());
});
});
total var will contain the total of all the select elements selected value.
If you want to retrieve the values in PHP, you can just use $_POST['acabados'] and it will contain all the values selected in each menu. See a demo. As long as you include the [] after the name, it will compound all the values for any element with that name into a single array. You can even mix select menus, inputs, and textareas together!
$(function () {
var $select = $('select');
$select.on('change', function () {
var output = 0;
for (var i = 0, len = $select.length; i < len; i++) {
output += parseInt($select.eq(i).val());
}
//the `output` variable now contains the addition of all the values from the `acabados[]` select elements
});
});
Here is a demo: http://jsfiddle.net/aPXXA/1/
You can change var $select = $('select'); to var $select = $('[name="acabados[]"]'); to only select the select elements with the acabados[] name attribute.
Why not just give them different id's and do the count in jquery/javascript. Alternatively give them all the same class, and do .each() to grab the values in all of them.
I have a select item, that is filled with a list of files. This list of files is stored in a php variable.
I have another list of files, from another directory, stored in another variable.
I have a dropdown, with 2 options. When I change the dropdown, I want the items in the select to change to the file list associated with the item selected.
For example, my dropdown contains:
Misc Images
People
I have 2 variables, $misc and $people.
When Misc is selected, I want the select to contain all the images listed in $misc, and when the People option is selected I want the select to contain all the options listed in $people.
As far as looping through the php to generate all the items is fine, what I don't understand is how to do the javascript portion?
Thanks, and apologies for poor wording.
Try this code out.
PHP:
<?php
$miscArray = array("misc1", "misc2", "misc3");
$misc = implode(", ", $miscArray);
$peopleArray = array("people1", "people2", "people3");
$people = implode(", ", $peopleArray);
?>
HTML:
<form action="#">
<select id="fileCat">
<option id="misc">Misc</option>
<option id="miscData" style="display:none"><?php echo $misc ?></option>
<option id="people">People</option>
<option id="peopleData" style="display:none"><?php echo $people ?></option>
</select>
<select id="files"></select>
</form>
JS:
init();
function init()
{
addListeners();
}
function addListeners()
{
document.getElementById("fileCat").onchange = fillSelect;
}
function fillSelect()
{
var fileCat = document.getElementById("fileCat");
var imageFiles;
switch(fileCat.options[fileCat.selectedIndex].id)
{
case "misc":
imageFiles = document.getElementById("miscData").innerHTML.split(", ");
break;
case "people":
imageFiles = document.getElementById("peopleData").innerHTML.split(", ");
break;
}
var parent = document.getElementById("files");
parent.innerHTML = "";
if(imageFiles.length)
{
for(var i=0;i<imageFiles.length;i++)
{
var option = document.createElement("option");
//populate option with corresponding image text
option.innerHTML = imageFiles[i];
parent.appendChild(option);
}
}
}
I mocked up some data in PHP and then echoed it into a hidden <option> tag for each category. Then, the data is grabbed using a case/switch depending on the id of the selected option.
I think something like this would work. You would set the onchange attribute of your drop down box to call that function. You will need to have a URL that returns the options you want to use in JSON (selectMenus.php in that example). You'd need two different urls or one that takes a parameter to indicate which option set.
could You provide us some code? It is quite heavy to write it completely of nothing :)
UPDATE:
then how about You try the following (or similar) by using jQuery:
<select id="foo">
<option class="misc">MISC</option>
<option class="misc">MISC2</option>
<option class="people">People1</option>
</select>
<script type="text/javascript">
$(document).ready(function(){
$('option.misc').click(function(){
$('#foo').html('<option class="misc">MISC</option>
<option class="misc">MISC2</option>');
});
});
</script>
PHP is server side. JavaScript is client side. You have two options
(1) send an XmlHTTP request back to your server to pull the options and update the select list, or (2) send the values to a hidden field on the initial render of the page and get the values from there.