I have a select element that populates another select on change. Everything works fine, but I want to automatically set the value of the new select to the first item in the array.
$.get($(this).data('url'), {
option: $(this).val()
}, function(data) {
var subcat = $('#models');
var options = " ";
subcat.empty();
$.each(data, function(index, element) {
options += "<option value='" + element.id + "'>" + element.name + "</option>";
});
subcat.append(options);
});
What I want to do is to set the selected value of models to first item.
Your option variable is just a string, and you can't append a string like that to the subcat object and have it turn into <option>s automatically.
Instead try one of these methods inside your $.each() function:
subcat.append($("<option value='" + element.id + "'>" + element.name + "</option>"));
or:
subcat.append($("<option/>").val(element.id).text(element.name));
The first option should be selected by default.
Fiddle
Related
so below is my snippet. What I want is to create a select dropdown option base from the data attribute (data-select-text and data-select-values) of the currently clicked button, so below is a working snippet except for getting the data-select-values which is the problem because i dont know how to loop it along with the data-select-text so that the result of each select option will have values and text base from the split values of the data-select-text and data-select-values attribute, any ideas, help, suggestions, recommendations?
NOTE: currently, I could only able to use the attribute data-select-text as a select options values and text.
$(document).ready(function(){
$(document).on("click", "button", function(){
if($(this).attr("data-input-type").toLowerCase() === "select"){
var classList = $(this).attr('data-select-text').split(/\s+/);
var field = '<select>';
$.each(classList, function(index, item) {
field += '<option value="' + item.replace(/%/g, ' ') + '">' + item.replace(/%/g, ' ') + '</option>';
});
field += '</select>';
}
$("body").append(field);
})
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<button data-input-type="select" data-select-text="select%1 select%2 select%3" data-select-values="1 2 3">Create a select dropdown option</button>
You could create an array for the values, the same as so did for the text.
Make sure that the order in both data-select-text and data-select-values is the same. Then you can use the index in your $.each loop:
$(document).ready(function(){
$(document).on("click", "button", function(){
var elem = $(this);
if( elem.attr("data-input-type").toLowerCase() === "select" ){
var classList = elem.data('select-text').split(/\s+/),
valueList = elem.data('select-values').split(/\s+/),
field = '<select>';
$.each(classList, function(index, item) {
field += '<option value="' + valueList[index].replace(/%/g, ' ') + '">' + item.replace(/%/g, ' ') + '</option>';
});
field += '</select>';
}
$("body").append(field);
})
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<button data-input-type="select" data-select-text="select%1 select%2 select%3" data-select-values="1 2 3">Create a select dropdown option</button>
The result will be:
<select>
<option value="1">select 1</option>
<option value="2">select 2</option>
<option value="3">select 3</option>
</select>
Here is one way to do it, if I understand correctly. This code does not take into account different text or value lengths. It expects that the text length of options created is always equal to the values length being used.
$(document).ready(function () {
$(document).on("click", "button", function () {
if ($(this).attr("data-input-type").toLowerCase() === "select") {
var classList = $(this).attr('data-select-text').split(/\s+/);
var valueList = $(this).attr('data-select-values').split(' ');
var field = '<select>';
$.each(classList, function (index, item) {
field += '<option value="' + valueList[index] + '">' + item.replace(/%/g, ' ') + '</option>';
});
field += '</select>';
}
$("body").append(field);
})
});
Fiddle: http://jsfiddle.net/32qt0vn8/
I have a dropdown whose options get filled dynamically:
function populateDropdown(dropdownNum) {
// invokeWebService uses $.ajax
json = invokeWebService("GET", "/webservice/dropwdownOptions");
optionsHtml = "";
$.each(json, function(count, jsObj) {
optionValue = jsObj.name
optionsHtml+="<option>" + optionValue + "</option>";
});
var dropdownId = "#NRdropdown_" + dropdownNum;
$(dropdownId).html(optionsHtml);
}
function display(blockNum) {
var url = "/webservice/blocks" + blockNum;
var response = invokeWebService("GET", url);
var replacementHtml = "";
var currBlock = "blah";
$.each(response, function(i, block) {
currName = block.name;
var textfield = "<input type='text' id='blockValue" + block.id +
"'>";
var dropdownMenu = "<select id=\"NRdropdown_" + i +
"\"onClick=\"populateDropDown(" + i +
")\"><option>Existing Blocks</option>"
var submitButton = "<input type='submit' value='UPDATE' id='" +
block.id + "'><br><br>";
replacementHtml = currName + textfield + dropdownMenu + submitButton;
});
$("#main").html(replacementHtml);
}
The javascript function "populateDropdown(dropdownNum)":
Makes the ajax request
Parses the json response for the option values into an html string called optionsHtml
Replaces the inner html of the select element with the option values via:
var dropdownSelector = "#NRdropdown_" + dropdownNum;
$(dropdownSelector).html(optionsHtml)
1) When I click on the dropdown arrow, I STILL see "Existing Blocks".
2) After 1 sec I see the first dynamically generated option UNDERNEATH the "Existing Blocks" option, I don't see the other dynamically generated options.
3) Then I click outside the dropdown and see the dropdwon showing the first dynamically generated value.
4) Finally I click the dropdown arrow again and it works as it should with all the dynamically generated values.
How do I make it work so that:
When the page first loads, the dropdown shows "Existing Blocks".
Once I click the dropdown arrow, the dropdown should show all dynamically generated values without the "Existing Blocks" value.
Thanks!
the dropdown listener should be for onmousedown, not onclick
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.
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);
});
I'm doing a select box with a list of items(dynamically created from an XML created by a webservice), and I'm unable to pull the selected value correctly. Here is what is happening.
What I'm sending:
onchange="changeFunction(this.options[this.selectedIndex].value)"
What I'm receiving:
function (a){if(f.isFunction(a))return this.each(function(b){var c=f(this);c.text(a.call(this,b,c.text()))});if(typeof a!=
I'm the only thing I'm using is some self built functions and jQuery.
Any help would be superb.
Edit: here is the change function. All it is intended to do is build a form populated with values for given selected item.
function changeFunction(selection) {
console.log(selection);
$('#right').empty();
var addNewFields = 'these will be the fields';
$('#right').append(addNewFields);
}
Here is the select in question:
<select class="userSelection" id="userSelection" size="10" style="width:150px;" onchange="changeFunction(this.options[this.selectedIndex].value)"></select>
This is literally all the code in the html part of it. It's being populated via ajax, and there are 2 divs, one for left, containing the select, and one for right, containing the content for the user.
Just for giggles, here is the code creating the options:
var optionTag = '<option value="' + $(this).find('optionID').text + '" >' + $(this).find('optionName').text() + '</option>';
$('#userSelection').append(optionTag);
var optionTag = '<option value="' + $(this).find('optionID').text + '" >' + $(this).find('optionName').text() + '</option>';
should be:
var optionTag = '<option value="' + $(this).find('optionID').text() + '" >' + $(this).find('optionName').text() + '</option>';
Notice that $(this).find('optionID').text should be $(this).find('optionID').text().
or even better, to avoid this soup:
var optionTag = $('<option/>', {
value: $(this).find('optionID').text(),
html: $(this).find('optionName').text()
});
When you set the event handler of a DOM object to a function it get passed an event object as it's argument.
selectBox.onchange = function(event) {
changeFn(this.options[this.selectedIndex].value);
};