Develop Reference

Get values and ids of all span elements inside form

I am trying to get all span elements inside the form. The span elements are turning into input text fields and become editable. When you click away they are turning back into span elements. I will attached fiddle live example.
I gave it a go but the problem is that I am getting both ids but only value of the first span element.
Here is my html:
<span name="inputEditableTest" class="pztest" id="inputEditableTest" data-editable="">First Element</span>
<span name="inputEditableTest2" class="pztest" id="inputEditableTest2" data-editable="">Second Element</span>
<input id="test" type="submit" class="btn btn-primary" value="Submit">
And here is JavaScript with jQuery:
$('body').on('click', '[data-editable]', function () {
var $el = $(this);
var name = $($el).attr('name');
var value = $($el).text();
console.log(name);
var $input = $('<input name="' + name + '" id="' + name + '" value="' + value + '"/>').val($el.text());
$el.replaceWith($input);
var save = function () {
var $p = $('<span data-editable class="pztest" name="' + name + '" id="' + name + '" />').text($input.val());
$input.replaceWith($p);
};
$input.one('blur', save).focus();
});
$("#test").on('click', function(){
var ok = $("span")
.map(function () {
return this.id;
})
.get()
.join();
var ok2 = $("#" + ok).text();
alert(ok);
alert(ok2);
//return [ok, ok2];
});
Here is the fiddle https://jsfiddle.net/v427zbo1/3/
I would like to return the results as an array example:
{element id : element value}
How can I read ids and values only inside specific form so something like:
<form id = "editableForm">
<span id="test1">Need these details</span>
<span id="test2">Need these details</span>
<input type="submit">
</form>
<span id="test3">Don't need details of this span</span>
Lets say I have got more than 1 form on the page and I want JavaScript to detect which form has been submitted and grab values of these span elements inside the form
I will be grateful for any help

$("#test").on('click', function(){
var result = {};
$("span").each(function (k, v) {
result[v.id] = v.innerHTML;
});
alert(JSON.stringify(result));
//return [ok, ok2];
});
Here is an example: https://jsfiddle.net/v427zbo1/4/
Container issue:
You should use this selector: #editableForm span if you want to get all the divs inside this container.
$("#editableForm span").each(function (k, v) {
result[v.id] = v.innerHTML;
});
But if you want to get only first-level children elements then you should use this selector: #editableForm > span
Example with getting all the spans inside #editableForm container: https://jsfiddle.net/v427zbo1/9/
If you want to have several forms, then you can do like this:
$('form').on('submit', function(e){
e.preventDefault();
var result = {};
$(this).find('span').each(function (k, v) {
result[v.id] = v.innerHTML;
});
alert(JSON.stringify(result));
//return [ok, ok2];
});
Example with two forms: https://jsfiddle.net/v427zbo1/10/

You can't use .text to return the value of multiple elements. It doesn't matter how many elements are selected, .text will only return the value of the first one.
Virtually all jQuery methods that return a value behave this way.
If you want to get an array of values for an array of matched elements, you need another map. You also need to join the strings with , # as you're producing something along the lines of #id1id2id3 instead of #id1, #id2, #id3:
var ok = $("span").map(function () {
return this.id;
}).join(', #')
var ok2 = $("#" + ok).map(function () {
return $(this).text();
});
That said, you're already selecting the right set of elements in your first map. You pass over each element to get its ID, you already have the element. There is no reason to throw it away and reselect the same thing by its ID.

If I got you right following code will do the job
var ok = $("span")
.map(function () {
return {id: $(this).attr('id') , value: $(this).text()};
}).get();
Check this fiddle.

Loop and variable in JavaScript

I create a Javascript script which create option in my html code, I have a problem when I want to put a loop in my variable.
The code show me this :
<select>
<option>undefined</option>
</select>
I have a table like
var event = ["Exercice1","Exercice2","Exercice3"];
Firstly, Here my variable :
iDiv = $('<select class="form-control">' +
event.forEach(function (eve) {
'<option>'+eve+'</option>'
})
+'</select>');
iBr = $('</br>');
iDiv.attr('id', 'select' + (currentDivsCount + i));
iDiv.attr('name', 'select' + (currentDivsCount + i));
iDiv.appendTo('table');
iBr.appendTo('table');
EDIT :
I created an other array which contains the ID of all Events and I want to put it each
var EventId = ["1","2","3"]
<option name="IdEvent">
I tried it :
iDiv = $('<select class="form-control"><option name="'+eventId.join()+'">'
+ eventlist.join("<option>")+ '</select>');
But I have this :
<option name="1,2,3,4,5,6">Exercice1</option>
Thank you for your helps

Use .map().join() instead of .forEach().
iDiv = $('<select class="form-control">' +
event.map(function (eve) {
return '<option>'+eve+'</option>'
}).join("")
+'</select>');
The .map() method creates a new Array that contains the values you returned from the function, and then .join(""), joins the content of that array as a single string.
You could also write it like this, which doesn't require .map() at all:
iDiv = $('<select class="form-control"><option>' +
event.join("</option><option>")
+'</option></select>');
And since option tags aren't required to be closed in order to be valid, you could shorten it a bit more.
iDiv = $('<select class="form-control"><option>' + event.join("<option>") + '</select>');

Trying to connect a dynamically created select element (tag) with options to a dynamically created table row

The first block of code is a working example of what I want the variable select to do. the var Select is there to be a td in the variable tr. the variable tr is used 2 times in this code. once to to append the tr when the table has html and another time when it doesn't have any html. the reason is because if doesn't have html it should append the header and the row with the select element and the rest of the data that's supposed to be on the row and if does have html it should only append the row to prevent repetition of the header. so I would like a nice clean variable named tr that will be append every time the users invokes it. jsfidle if you click on the drop down you could select the item and the new row will appear.
$('#autocomplete').autocomplete({
lookup: currencies,
onSelect: function (suggestion) {
var thehtml = '<strong>Item:</strong> ' + suggestion.value + ' <br> <strong>price:</strong> ' + suggestion.data + "<br>" + suggestion.divs;
var tableheader = ($("<thead>")
.append($("<tr>")
.append($("<th>Item</th><th>Qty</th><th>Price</th>")))
)
var select = " <select class = 'select'><option value='volvo>Volvo</option> <option value='saab'>Saab</option> <option value='mercedes'>Mercedes</option> <option value='audi'>Audi</option> </select>"
var tr = "<tr><td>"+ suggestion.value + "</td><td>" +select +"</td></tr>"
if($(".table").html().length <= 0)
{
$('.table').append($("<table>")).append(tableheader).append(tr);
}else{
if($(".table").html().length > 0){
$(".table").append(tr)
}
}
The thing is I want the select element to be made up dynamically so i tried something and I cant figure out why it wont work. It's not recieving the variable. Am i implementing the varable wrong with the $.each?
$('#autocomplete').autocomplete({
lookup: currencies,
onSelect: function (suggestion) {
var thehtml = '<strong>Item:</strong> ' + suggestion.value + ' <br> <strong>price:</strong> ' + suggestion.data + "<br>" + suggestion.divs;
var tableheader = ($("<thead>")
.append($("<tr>")
.append($("<th>Item</th><th>Qty</th><th>Price</th>")))
)
var selectValues = { "3": "2", "2": "1" , "1": "..."};
var select = $.each(selectValues, function(key, value){
$('.select').append($('<option>', {value: value}).text(value));
// <option value='volvo>Volvo</option>
});
var tr = "<tr><td>"+ suggestion.value + "</td><td><select class ='select'>" + select + "</select></td></tr>";
if($(".table").html().length <= 0)
{
$('.table').append($("<table>")).append(tableheader).append(tr);
}else{
if($(".table").html().length > 0){
$(".table").append(tr)
}
}
},
maxHeight:100,
width:600
});
thanks for your help

Why use object if you use only value?
if you realy don't need key juste create an array :
var selectValues = ["2", "1", "..."];
var value;
var select = selectValues.forEach(function(value){
$('.select').append($('<option>', {value: value}).text(value));
// <option value='volvo>Volvo</option>
});
// or if you want more compatibility
for (var i = 0, len = selectValue.length; i < len; i++) {
value = selectValue[i];
$('.select').append($('<option>', {value: value}).text(value));
});
Edit:
i make some mistake sorry.
first forEach will return nothing so it's can't work.
I test with your fidle. try this (replace by old for loop if you don't want to use map).
var select = selectValues.map(function(value){
return "<option value=" + value + ">" + value + "</option>";
// <option value='volvo>Volvo</option>
}).join('');
first you do not have to append from $('.select') because this dom not exist at this moment
and you can't concate an array in a string like this.

Getting a SelectList obejct from a ListBox and placing into an HTML Selection List

Say I have a ListBox populated with a name value pair SelectList(myUsers, "Key", "Value"):
#Html.ListBox("ListReviewers", (SelectList)ViewBag.ListOFReviewers, new { style = "width:120px;" })
I want to double click an option in this ListBox, and place it in a SelectionList like below:
<div class="selectedEmployees">
<select class="selectionList" multiple="multiple" name="AssignedReviewer" style="width:120px;">
<!--x.UserID, x.FirstName + " " + x.LastName) -->
<option value=""></option>
</select>
</div>
Once this collection is placed in the above, I want to store all the values in another SelectionList Collection for later use.
Here is the start of my jQuery code:
<script type="text/javascript">
$('#ListReviewers').dblclick(function (i, selected) {
//double click on this value of listbox of type SelectList(myUsers, "Key", "Value")
//store this value and text
var value = $(this).val;
//var empName = $(this).data[0];
var empName = $(selected).text();
alert(empName);
//append an option element <option value=""></option>
$('.selectionList').append('<option id="' + value + '">' + empName + '</option>');
});
I can get the value of the dblclicked collection object, but not the text of the collection object. Is there a better way to do this?

Try attaching your event to the option within the select itself. You can then use this to access it's properties.
$('#ListReviewers option').dblclick(function () {
var value = $(this).val();
var empName = $(this).text();
$('.selectionList').append('<option id="' + value + '">' + empName + '</option>');
});
Alternatively, you can use clone() and append() to move the option from one select to the other. This will save you having to worry about duplicate options being appended.
$('#ListReviewers option').dblclick(function () {
var $newOptions = $(this).clone(false);
$(this).remove();
$('.selectionList').append($newOption);
});

Adding options to a <select> using jQuery?

What's the easiest way to add an option to a dropdown using jQuery?
Will this work?
$("#mySelect").append('<option value=1>My option</option>');

Personally, I prefer this syntax for appending options:
$('#mySelect').append($('<option>', {
value: 1,
text: 'My option'
}));
If you're adding options from a collection of items, you can do the following:
$.each(items, function (i, item) {
$('#mySelect').append($('<option>', {
value: item.value,
text : item.text
}));
});

This did NOT work in IE8 (yet did in FF):
$("#selectList").append(new Option("option text", "value"));
This DID work:
var o = new Option("option text", "value");
/// jquerify the DOM object 'o' so we can use the html method
$(o).html("option text");
$("#selectList").append(o);

You can add option using following syntax, Also you can visit to way handle option in jQuery for more details.
$('#select').append($('<option>', {value:1, text:'One'}));
$('#select').append('<option value="1">One</option>');
var option = new Option(text, value); $('#select').append($(option));

If the option name or value is dynamic, you won't want to have to worry about escaping special characters in it; in this you might prefer simple DOM methods:
var s= document.getElementById('mySelect');
s.options[s.options.length]= new Option('My option', '1');

This is very simple:
$('#select_id').append('<option value="five" selected="selected">Five</option>');
or
$('#select_id').append($('<option>', {
value: 1,
text: 'One'
}));

Option 1-
You can try this-
$('#selectID').append($('<option>',
{
value: value_variable,
text : text_variable
}));
Like this-
for (i = 0; i < 10; i++)
{
$('#mySelect').append($('<option>',
{
value: i,
text : "Option "+i
}));
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<select id='mySelect'></select>
Option 2-
Or try this-
$('#selectID').append( '<option value="'+value_variable+'">'+text_variable+'</option>' );
Like this-
for (i = 0; i < 10; i++)
{
$('#mySelect').append( '<option value="'+i+'">'+'Option '+i+'</option>' );
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<select id='mySelect'></select>

That works well.
If adding more than one option element, I'd recommend performing the append once as opposed to performing an append on each element.

for whatever reason doing $("#myselect").append(new Option("text", "text")); isn't working for me in IE7+
I had to use $("#myselect").html("<option value='text'>text</option>");

To help performance you should try to only alter the DOM once, even more so if you are adding many options.
var html = '';
for (var i = 0, len = data.length; i < len; ++i) {
html.join('<option value="' + data[i]['value'] + '">' + data[i]['label'] + '</option>');
}
$('#select').append(html);

Why not simply?
$('<option/>')
.val(optionVal)
.text('some option')
.appendTo('#mySelect')
Test here:
for (let i=0; i<10; i++) {
$('<option/>').val(i).text('option ' + i).appendTo('#mySelect')
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<select id="mySelect"></select>

$('#mySelect').empty().append('<option value=1>My option</option>').selectmenu('refresh');

I like to use non jquery approach:
mySelect.add(new Option('My option', 1));

var select = $('#myselect');
var newOptions = {
'red' : 'Red',
'blue' : 'Blue',
'green' : 'Green',
'yellow' : 'Yellow'
};
$('option', select).remove();
$.each(newOptions, function(text, key) {
var option = new Option(key, text);
select.append($(option));
});

You can add options dynamically into dropdown as shown in below example. Here in this example I have taken array data and binded those array value to dropdown as shown in output screenshot
Output:
var resultData=["Mumbai","Delhi","Chennai","Goa"]
$(document).ready(function(){
var myselect = $('<select>');
$.each(resultData, function(index, key) {
myselect.append( $('<option></option>').val(key).html(key) );
});
$('#selectCity').append(myselect.html());
});
<script src="https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.2.1.min.js">
</script>
<select id="selectCity">
</select>

Not mentioned in any answer but useful is the case where you want that option to be also selected, you can add:
var o = new Option("option text", "value");
o.selected=true;
$("#mySelect").append(o);

If you want to insert the new option at a specific index in the select:
$("#my_select option").eq(2).before($('<option>', {
value: 'New Item',
text: 'New Item'
}));
This will insert the "New Item" as the 3rd item in the select.

There are two ways. You can use either of these two.
First:
$('#waterTransportationFrom').append('<option value="select" selected="selected">Select From Dropdown List</option>');
Second:
$.each(dataCollecton, function(val, text) {
options.append($('<option></option>').val(text.route).html(text.route));
});

You can append and set the Value attribute with text:
$("#id").append($('<option></option>').attr("value", '').text(''));
$("#id").append($('<option></option>').attr("value", '4').text('Financial Institutions'));

How about this
var numbers = [1, 2, 3, 4, 5];
var option = '';
for (var i=0;i<numbers.length;i++){
option += '<option value="'+ numbers[i] + '">' + numbers[i] + '</option>';
}
$('#items').append(option);

if u have optgroup inside select, u got error in DOM.
I think a best way:
$("#select option:last").after($('<option value="1">my option</option>'));

We found some problem when you append option and use jquery validate.
You must click one item in select multiple list.
You will add this code to handle:
$("#phonelist").append("<option value='"+ 'yournewvalue' +"' >"+ 'yournewvalue' +"</option>");
$("#phonelist option:selected").removeAttr("selected"); // add to remove lase selected
$('#phonelist option[value=' + 'yournewvalue' + ']').attr('selected', true); //add new selected

$(function () {
var option = $("<option></option>");
option.text("Display text");
option.val("1");
$("#Select1").append(option);
});
If you getting data from some object, then just forward that object to function...
$(function (product) {
var option = $("<option></option>");
option.text(product.Name);
option.val(product.Id);
$("#Select1").append(option);
});
Name and Id are names of object properties...so you can call them whatever you like...And ofcourse if you have Array...you want to build custom function with for loop...and then just call that function in document ready...Cheers

Based on dule's answer for appending a collection of items, a one-liner for...in will also work wonders:
let cities = {'ny':'New York','ld':'London','db':'Dubai','pk':'Beijing','tk':'Tokyo','nd':'New Delhi'};
for(let c in cities){$('#selectCity').append($('<option>',{value: c,text: cities[c]}))}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.0/jquery.min.js"></script>
<select id="selectCity"></select>
Both object values and indexes are assigned to the options. This solution works even in the old jQuery (v1.4)!

If someone comes here looking for a way to add options with data properties
Using attr
var option = $('<option>', { value: 'the_value', text: 'some text' }).attr('family', model.family);
Using data - version added 1.2.3
var option = $('<option>', { value: 'the_value', text: 'some text' }).data('misc', 'misc-value);

$('#select_id').append($('<option>',{ value: v, text: t }));

This is just a quick points for best performance
always when you are dealing with many options, build a big string and then add it to the 'select' for best performance
f.g.
var $mySelect = $('#mySelect');
var str = '';
$.each(items, function (i, item) {
// IMPORTANT: no selectors inside the loop (for the best performance)
str += "<option value='" + item.value + "'> " + item.text + "</option>";
});
// you built a big string
$mySelect.html(str); // <-- here you add the big string with a lot of options into the selector.
$mySelect.multiSelect('refresh');
Even faster
var str = "";
for(var i; i = 0; i < arr.length; i++){
str += "<option value='" + item[i].value + "'> " + item[i].text + "</option>";
}
$mySelect.html(str);
$mySelect.multiSelect('refresh');

This is the way i did it, with a button to add each select tag.
$(document).on("click","#button",function() {
$('#id_table_AddTransactions').append('<option></option>')
}

You can do this in ES6:
$.each(json, (i, val) => {
$('.js-country-of-birth').append(`<option value="${val.country_code}"> ${val.country} </option>`);
});

Try
mySelect.innerHTML+= '<option value=1>My option</option>';
btn.onclick= _=> mySelect.innerHTML+= `<option selected>${+new Date}</option>`
<button id="btn">Add option</button>
<select id="mySelect"></select>

U can try below code to append to option
<select id="mySelect"></select>
<script>
$("#mySelect").append($("<option></option>").val("1").html("My enter code hereoption"));
</script>