Below I have a year dropdown.
<select name="from_year" class="col-md-4 form-control" id="from_year">
<option value="0">Select Year</option>
<option value="2010">2010</option>
<option value="2011">2011</option>
<option value="2012">2012</option>
<option value="2013">2013</option>
<option value="2014">2014</option>
<option selected="selected" value="2015">2015</option>
<option value="2016">2016</option>
<option value="2017">2017</option>
<option value="2018">2018</option>
<option value="2019">2019</option>
<option value="2020">2020</option>
</select>
Now from ajax call I get some year say 2016. Now I want to disable all options less than 2016. I tried following:
$('select#from_year option:lt('+payment_date[1]+')').prop("disabled", true);
. . . where payment_date[1] = 2016, but to no avail.
Am I doing something wrong. Any help/suggestions are welcome.
You can use filter() to achieve this:
var year = 2016;
$('#from_year option').filter(function() {
return $(this).val() < year;
}).prop('disabled', true);
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<select name="from_year" class="col-md-4 form-control" id="from_year">
<option value="0">Select Year</option>
<option value="2010">2010</option>
<option value="2011">2011</option>
<option value="2012">2012</option>
<option value="2013">2013</option>
<option value="2014">2014</option>
<option selected="selected" value="2015">2015</option>
<option value="2016">2016</option>
<option value="2017">2017</option>
<option value="2018">2018</option>
<option value="2019">2019</option>
<option value="2020">2020</option>
</select>
- Update -
Note that the syntax for the filter() function can now be simplified using ES6 arrow functions:
$('#from_year option').filter((i, el) => el.value < year).prop('disabled', true);
Rory's answer is great (I upvoted it :) ), but here is one that is more of an adaptation of what you initially tried:
var $group = $("select#from_year");
var iTarget = $group.find("[value='" + payment_date[1] + "']").index();
$group.find(":lt(" + iTarget + ")").prop("disabled", true);
The key difference is that jQuery's :lt() runs off of an elements index within its selector group, rather than its value. So you have to retrieve the index of the "2016" <option> before you can compare the other indexes to it with :lt().
Note: That would also disable the "Select Year" option which may or may not cause you issues.
Related
<select>
<option value="1">Jan</option>
<option value="2">Feb</option>
<option value="3">Mar</option>
<option value="4">Apr</option>
<option value="5">May</option>
<option value="6">Jun</option>
<option value="7">Jul</option>
<option value="8">Aug</option>
<option value="9">Sept</option>
<option value="10">Oct</option>
<option value="11">Nov</option>
<option value="12">Dec</option>
</select>
I have the list of the month and they have numeric value to represent month number. I need to Mar to be selected by typing 3 on keyboard when it is focused.
Now I have to type "m" to select Mar or first letter of any month to select that month.
You can have a look at the fiddle here : https://jsfiddle.net/tn0gL34h/1/
check this i have modified ahmad's answer little bit, this will work for 2 digits also. source
var typingTimer;
var doneTypingInterval = 1000;
var $input = $('select');
var keys = '';
$input.on('keyup', function (e) {
keys += parseInt(e.key);
console.log(keys);
clearTimeout(typingTimer);
typingTimer = setTimeout(doneTyping, doneTypingInterval);
});
//on keydown, clear the countdown
$input.on('keydown', function () {
clearTimeout(typingTimer);
});
//user is "finished typing," do something
function doneTyping () {
if(keys != ''){
//do something
$input.val(parseInt(keys));
keys='';
}
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<select>
<option value="1">Jan</option>
<option value="2">Feb</option>
<option value="3">Mar</option>
<option value="4">Apr</option>
<option value="5">May</option>
<option value="6">Jun</option>
<option value="7">Jul</option>
<option value="8">Aug</option>
<option value="9">Sept</option>
<option value="10">Oct</option>
<option value="11">Nov</option>
<option value="12">Dec</option>
</select>
For months from January to September, the following code will work, because they all require a single keystroke.
For the others, Month 10, 11, and 12, you will have to select manually.
$('select').on('keyup',function(e){
// this will only work for Jan --> Sep
// becuase Oct --> Dec require two digits
$(this).val(parseInt(e.key));
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<select>
<option value="1">Jan</option>
<option value="2">Feb</option>
<option value="3">Mar</option>
<option value="4">Apr</option>
<option value="5">May</option>
<option value="6">Jun</option>
<option value="7">Jul</option>
<option value="8">Aug</option>
<option value="9">Sept</option>
<option value="10">Oct</option>
<option value="11">Nov</option>
<option value="12">Dec</option>
</select>
As far as I know, the only reliable way to do this would be to use a javacript select menu replacement plugin. The techniques for capturing keypresses while a select is focused work on some browsers but not others (see more discussion on this here: keydown event in drop down list). In fact, though others have mentioned it works for them, Ahmad's answer above does not work on my browser (Chrome 49 / OS X 10.8).
Here is an example of how you could do this with a modified matcher method using Select2:
$('select').select2({
matcher: function(params, data) {
if ($.trim(params.term) === '') {
return data;
} else if (data.id.indexOf(params.term) === 0) {
// this is where the magic happens
// we return options where search input matches
// the beginning of the value
return data;
} else {
return null;
}
}
});
select {
width: 100px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link href="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.6-rc.0/css/select2.min.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.6-rc.0/js/select2.min.js"></script>
<select>
<option value="1">Jan</option>
<option value="2">Feb</option>
<option value="3">Mar</option>
<option value="4">Apr</option>
<option value="5">May</option>
<option value="6">Jun</option>
<option value="7">Jul</option>
<option value="8">Aug</option>
<option value="9">Sept</option>
<option value="10">Oct</option>
<option value="11">Nov</option>
<option value="12">Dec</option>
</select>
I am using PHP to show years between 1940 and the current year and using a foreach loop to render each option inside a select element. Everything works as planned until I add an id to the select element that a block of jquery looks at for changes.
Essentially I am trying to console.log (for now) the value of whatever option gets selected but something about my jQuery/PHP is stopping the select from displaying the selected option. The console.log works as expected but the selected option doesn't update in the element. It always goes back to displaying the default option aka 2018 since it's the current year.
If I change the PHP foreach select/option to a static dropdown of plain HTML it works fine. Likewise, if I disconnect the jQuery but keep the PHP dynamically generated option list it works fine. Something about the combo of my PHP+jQuery is preventing the select from updating and I cannot figure what.
Here is my HTML/PHP code:
<select name="birthyear" id="birthyear">
<?php
// $years is setting the range from current year to 1940
$years = range(date('Y'), 1940);
foreach ($years as $year) {
echo "<option id='$year' value='$year'>".$year."</option>";
}
?>
</select>
Here is my jQuery:
$('#birthyear').on('change', function() {
var date = new Date();
var year = date.getFullYear();
var yearsOld = year - $(this).val();
console.log(yearsOld + " years old.");
if (yearsOld >= 18) {
console.log("age >= 18")
} else {
console.log("You aren't old enough!");
}
});
Am I missing something here?
Your code works fine... All I did was execute the PHP to get the HTML and then plugged it into JSFiddle.
I'd assume your problem is that you didn't properly include jQuery.
<select name="birthyear" id="birthyear">
<option id='2018' value='2018'>2018</option>
<option id='2017' value='2017'>2017</option>
<option id='2016' value='2016'>2016</option>
<option id='2015' value='2015'>2015</option>
<option id='2014' value='2014'>2014</option>
<option id='2013' value='2013'>2013</option>
<option id='2012' value='2012'>2012</option>
<option id='2011' value='2011'>2011</option>
<option id='2010' value='2010'>2010</option>
<option id='2009' value='2009'>2009</option>
<option id='2008' value='2008'>2008</option>
<option id='2007' value='2007'>2007</option>
<option id='2006' value='2006'>2006</option>
<option id='2005' value='2005'>2005</option>
<option id='2004' value='2004'>2004</option>
<option id='2003' value='2003'>2003</option>
<option id='2002' value='2002'>2002</option>
<option id='2001' value='2001'>2001</option>
<option id='2000' value='2000'>2000</option>
<option id='1999' value='1999'>1999</option>
<option id='1998' value='1998'>1998</option>
<option id='1997' value='1997'>1997</option>
<option id='1996' value='1996'>1996</option>
<option id='1995' value='1995'>1995</option>
<option id='1994' value='1994'>1994</option>
<option id='1993' value='1993'>1993</option>
<option id='1992' value='1992'>1992</option>
<option id='1991' value='1991'>1991</option>
<option id='1990' value='1990'>1990</option>
<option id='1989' value='1989'>1989</option>
<option id='1988' value='1988'>1988</option>
<option id='1987' value='1987'>1987</option>
<option id='1986' value='1986'>1986</option>
<option id='1985' value='1985'>1985</option>
<option id='1984' value='1984'>1984</option>
<option id='1983' value='1983'>1983</option>
<option id='1982' value='1982'>1982</option>
<option id='1981' value='1981'>1981</option>
<option id='1980' value='1980'>1980</option>
<option id='1979' value='1979'>1979</option>
<option id='1978' value='1978'>1978</option>
<option id='1977' value='1977'>1977</option>
<option id='1976' value='1976'>1976</option>
<option id='1975' value='1975'>1975</option>
<option id='1974' value='1974'>1974</option>
<option id='1973' value='1973'>1973</option>
<option id='1972' value='1972'>1972</option>
<option id='1971' value='1971'>1971</option>
<option id='1970' value='1970'>1970</option>
<option id='1969' value='1969'>1969</option>
<option id='1968' value='1968'>1968</option>
<option id='1967' value='1967'>1967</option>
<option id='1966' value='1966'>1966</option>
<option id='1965' value='1965'>1965</option>
<option id='1964' value='1964'>1964</option>
<option id='1963' value='1963'>1963</option>
<option id='1962' value='1962'>1962</option>
<option id='1961' value='1961'>1961</option>
<option id='1960' value='1960'>1960</option>
<option id='1959' value='1959'>1959</option>
<option id='1958' value='1958'>1958</option>
<option id='1957' value='1957'>1957</option>
<option id='1956' value='1956'>1956</option>
<option id='1955' value='1955'>1955</option>
<option id='1954' value='1954'>1954</option>
<option id='1953' value='1953'>1953</option>
<option id='1952' value='1952'>1952</option>
<option id='1951' value='1951'>1951</option>
<option id='1950' value='1950'>1950</option>
<option id='1949' value='1949'>1949</option>
<option id='1948' value='1948'>1948</option>
<option id='1947' value='1947'>1947</option>
<option id='1946' value='1946'>1946</option>
<option id='1945' value='1945'>1945</option>
<option id='1944' value='1944'>1944</option>
<option id='1943' value='1943'>1943</option>
<option id='1942' value='1942'>1942</option>
<option id='1941' value='1941'>1941</option>
<option id='1940' value='1940'>1940</option>
</select>
https://jsfiddle.net/gpfh150g/
I'm using a select field on my site which reloads the page and then adds this to value to a separate div. I want to be able to disable this option if any of the divs have the same value as the option.
<select id="bayname" name="bayname">
<option value="">--Select Bay--</option>
<option value="1">Bay 1</option>
<option value="2">Bay 2</option>
<option value="3">Bay 3</option>
<option value="4">Bay 4</option>
<option value="5">Bay 5</option>
<option value="6">Bay 6</option>
<option value="7">Bay 7</option>
<option value="8">Bay 8</option>
<option value="9">Bay 9</option>
<option value="10">Bay 10</option>
<option value="11">Bay 11</option>
<option value="12">Bay 12</option>
<option value="13">Bay 13</option>
<option value="14">Bay 14</option>
<option value="15">Bay 15</option>
<option value="16">Bay 16</option>
<option value="17">Bay 17</option>
<option value="18">Bay 18</option>
<option value="19">Bay 19</option>
<option value="20">Bay 20</option>
<option value="21">Bay 21</option>
<option value="22">Bay 22</option>
<option value="23">Bay 23</option>
<option value="24">Bay 24</option>
<option value="25">Bay 25</option>
<option value="26">Bay 26</option>
<option value="27">Bay 27</option>
<option value="28">Bay 28</option>
<option value="29">Bay 29</option>
<option value="30">Bay 30</option>
</select>
For example if a user clicks on 'Bay 1' a div will be created like this:
<li id="1509013949" class="cart-select cart-mode-cart">
1
</li>
And then when the page reloads again, i want to create an if statement so if the value from the select is within one of the divs then it should add it as disabled.
I've had ago at doing this using the code below and i can't get it to print out in the console log.
var baynumberoption = $("#bayname option").val();
var baynumber = $(".cart-select a[href='#select']").text();
if (baynumber.indexOf(baynumberoption) >= 0) {
console.log("match found");
}
$("#bayname option") returns all of the options so I think you really want to use the following. Note if you don't want to rely on the inner text of the link, you can also add data attribute like data-id="1" to store the value which can be used like:
$("#bayname option").each(function() {
var val = $(this).val();
if ( $(".cart-select a[data-id=" + val + "]").length > 0 ) {
$(this).attr("disabled", "disabled");
}
});
Some of the syntax may be off but you get the idea.
I have defined month drop down list in view like this
<select id="dlMonth" onchange="OnChangeDownloadTimesheetOption('month')">
<option value="1">Jan</option>
<option value="2">Feb</option>
<option value="3">Mar</option>
<option value="4">Apr</option>
<option value="5">May</option>
<option value="6">June</option>
<option value="7">Jul</option>
<option value="8">Aug</option>
<option value="9">Sept</option>
<option value="10">Oct</option>
<option value="11">Nov</option>
<option value="12">Dec</option>
</select>
and year drop down like this
<li style="float:left;margin-left:2%">#Html.DropDownListFor(m => m.SelectedYear, #Model.year, new { id = "dlYear", onchange = "OnChangeDownloadTimesheetOption('year')" })</li>
Now I want to disable all the months which has not yet occured for the current year in the javascript page.And for the previous years it must not disable any of the months.
I have written code somewhat like this in javascropt page
function TimesheetDownloadPageOnLoad() {
debugger;
var todayDate = new Date();
var year = todayDate.getFullYear();
var selectedYear=$("#dlYear").val();
if (selectedYear == year)
{
$("#dlMonth").attr('disabled','disabled')
}
Please help me with the coding.
To achieve this you can use getMonth() to get the current month as an integer from a Date object. You can then use jQuery's :gt() selector to get all months after that from the select, before disabling them using prop('disabled'). Try this:
function TimesheetDownloadPageOnLoad() {
var month = new Date().getMonth();
$('#dlMonth option:gt(' + month + ')').prop('disabled', true);
}
TimesheetDownloadPageOnLoad();
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select id="dlMonth">
<option value="1">Jan</option>
<option value="2">Feb</option>
<option value="3">Mar</option>
<option value="4">Apr</option>
<option value="5">May</option>
<option value="6">June</option>
<option value="7">Jul</option>
<option value="8">Aug</option>
<option value="9">Sept</option>
<option value="10">Oct</option>
<option value="11">Nov</option>
<option value="12">Dec</option>
</select>
I have a select tag and I want to check if a moth is selected.
<select name="Birth_Month">
<option value="" SELECTED>- Month -</option>
<option value="January">January</option>
<option value="Fabruary">Fabruary</option>
<option value="March">March</option>
<option value="April">April</option>
<option value="May">May</option>
<option value="June">June</option>
<option value="July">July</option>
<option value="August">August</option>
<option value="September">September</option>
<option value="October">October</option>
<option value="November">November</option>
<option value="December">December</option>
</select>
So do this:
if (document.registration_form.Birth_Month.value === '')
{
alert('Please fill select Month!');
}
But this JavaScript for some select-s work and for some of them, does not. Obviously, when the "- Month -" is selected the it returnes "- Month -" insted of "" (empty string). What I have done wrong? What is the best way of checking the tag's selection?
Browsers didn't always have a .value property for <select> - we used to have to get the value of the <option>:
var birthMonth = document.registration_form.Birth_Month;
if (birthMonth.options[birthMonth.selectedIndex].value === '') {
// something
}
I use jQuery .val() now. I don't remember which browsers lack the select.value property, and maybe those browsers are so old that we don't need to worry about them anymore. But jQuery doesn't use select.value - it loops through each of the options to find the selected option's value.
Of course, if you know you'll always have a single blank option as the first option, just check for selectedIndex==0.
I believe integers are a better practice for option values. Anyhow, the snippet below doesn't care if your default option value is an empty string or a zero value.
var birthMonth = document.registration_form.Birth_Month;
if(birthMonth.options[birthMonth.selectedIndex].value === false){
alert('Please fill select Month!');
}
You do not need to use 'selectedIndex'
<select name="Birth_Month">
<option value="" SELECTED>- Month -</option>
<option value="January">January</option>
<option value="Fabruary">Fabruary</option>
<option value="March">March</option>
<option value="April">April</option>
<option value="May">May</option>
<option value="June">June</option>
<option value="July">July</option>
<option value="August">August</option>
<option value="September">September</option>
<option value="October">October</option>
<option value="November">November</option>
<option value="December">December</option>
</select>
if (document.getElementById('Birth_Month').value === '')
{
alert('Please fill select Month!');
}
OR
<select name="Birth_Month">
<option value="they_did_not_select_anything" SELECTED>- Month -</option>
<option value="January">January</option>
<option value="Fabruary">Fabruary</option>
<option value="March">March</option>
<option value="April">April</option>
<option value="May">May</option>
<option value="June">June</option>
<option value="July">July</option>
<option value="August">August</option>
<option value="September">September</option>
<option value="October">October</option>
<option value="November">November</option>
<option value="December">December</option>
</select>
if (document.getElementById('Birth_Month').value === 'they_did_not_select_anything')
{
alert('Please fill select Month!');
}