I have a list of countries like this:
The list is very extensive. I need to be able on a button click to move (focus) to the specified country.
There are many threads in StackOverflow but none of them worked. For example I tried this:
var code = 40;
$('#id_resource-regions').val(code).scrollTop(160);
There is no response and no error/warnings in the developers tool.
Note that the list is created using django forms and templates.
Select the option element you are looking for.
Get the offset top position using .offset(), of the selected option element.
Get the offset top of the select element.
Use .scrollTop() to scroll to the desired option.
Here is an example
var btn = $('button')
var select = $('select')
btn.on('click', function() {
var option = select.find("option:contains('item-30')");
var optionTop = option.offset().top
var selectTop = select.offset().top;
select.scrollTop(select.scrollTop() + (optionTop - selectTop));
option.prop('selected', true)
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select name="" id="select" multiple="multiple">
<option value="">item-1</option>
<option value="">item-2</option>
<option value="">item-3</option>
<option value="">item-4</option>
<option value="">item-5</option>
<option value="">item-6</option>
<option value="">item-7</option>
<option value="">item-8</option>
<option value="">item-9</option>
<option value="">item-10</option>
<option value="">item-11</option>
<option value="">item-12</option>
<option value="">item-13</option>
<option value="">item-14</option>
<option value="">item-15</option>
<option value="">item-16</option>
<option value="">item-17</option>
<option value="">item-18</option>
<option value="">item-19</option>
<option value="">item-20</option>
<option value="">item-21</option>
<option value="">item-22</option>
<option value="">item-23</option>
<option value="">item-24</option>
<option value="">item-25</option>
<option value="">item-26</option>
<option value="">item-27</option>
<option value="">item-28</option>
<option value="">item-29</option>
<option value="">item-30</option>
<option value="">item-31</option>
<option value="">item-32</option>
<option value="">item-33</option>
<option value="">item-34</option>
<option value="">item-35</option>
<option value="">item-36</option>
<option value="">item-37</option>
<option value="">item-38</option>
<option value="">item-39</option>
<option value="">item-40</option>
</select>
<button>move to item 30</button>
Related
What I'm trying is something pretty basic, but I can't do it because the examples I see aren't anything similar to what I'm looking for.
There are 2 select, one of them you choose manually and the other dynamically changes depending on the value of the first one.
If the value of the first select is 1, that in the second one they only appear whose value is 1 as well.
I want to make it 100% JavaScript, I don't want any JQuery.
HTML.php
<select onchange="catch_value_types()" name="types" id="types">
<option value="1">Meat</option>
<option value="2">Fish</option>
<option value="3">Vegetables</option>
</select>
<select name="food" id="food">
<option value="1">Pork</option>
<option value="1">Cow</option>
<option value="1">Chicken</option>
<option value="2">Sardine</option>
<option value="2">Salmon</option>
<option value="2">Mackerel</option>
<option value="3">Spinach</option>
<option value="3">Kale</option>
<option value="3">Green peas</option>
</select>
JavaScript.js
function catch_value_types() {
var types_value_option = document.getElementById("types").value;
// What should I put here?
}
Loop through the options and hide if value doesnot match
function catch_value_types() {
const selectedValue = document.getElementById("types").value;
const select2 = document.getElementById("food");
Array.from(select2.options).forEach((node) => node.style.display = node.value === selectedValue ? "block": "none");
}
<select onchange="catch_value_types()" name="types" id="types">
<option value="1">Meat</option>
<option value="2">Fish</option>
<option value="3">Vegetables</option>
</select>
<select name="food" id="food">
<option>Please Select</option>
<option value="1">Pork</option>
<option value="1">Cow</option>
<option value="1">Chicken</option>
<option value="2">Sardine</option>
<option value="2">Salmon</option>
<option value="2">Mackerel</option>
<option value="3">Spinach</option>
<option value="3">Kale</option>
<option value="3">Green peas</option>
</select>
I want to get the information below the first <option> tag, I want to use jQuery/Cheerio to extract the information and transform the end result into a dictionary. It would ideally look like this
const info = {
'5.5':12773,
'6':12774,
}
And it goes on till the end.
<select name="size_attribute[size]" id="attributesize-size_uswomen" class="size-attribute-select">
<option>Choose Your Size</option>
<option value="12773" source="16004">5.5</option>
<option value="12774" source="16006">6</option>
<option value="12775" source="16008">6.5</option>
<option value="14805" source="16010">7</option>
<option value="14809" source="16012">7.5</option>
<option value="12749" source="16014">8</option>
<option value="14816" source="16016">8.5</option>
<option value="14820" source="16018">9</option>
<option value="14824" source="16020">9.5</option>
<option value="15175" source="16022">10</option>
<option value="15178" source="16024">10.5</option>
<option value="15184" source="16028">11.5</option>
<option value="15187" source="16030">12</option>
</select>
Well, if you want to do all of this in jQuery, you can simply get all of the options of a select element with the jQuery selector ($('#attributesize-size_uswomen option')) and then perform a for loop ($.each) over it and fill your object easily.
So your final code should be something like this:
var opts = $('#attributesize-size_uswomen option:not(:first)');
var info = {};
$.each(opts, function(index, opt) {
info[$(opt).text()] = parseInt($(opt).val())
});
console.log(info);
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<select name="size_attribute[size]" id="attributesize-size_uswomen" class="size-attribute-select">
<option>Choose Your Size</option>
<option value="12773" source="16004">5.5</option>
<option value="12774" source="16006">6</option>
<option value="12775" source="16008">6.5</option>
<option value="14805" source="16010">7</option>
<option value="14809" source="16012">7.5</option>
<option value="12749" source="16014">8</option>
<option value="14816" source="16016">8.5</option>
<option value="14820" source="16018">9</option>
<option value="14824" source="16020">9.5</option>
<option value="15175" source="16022">10</option>
<option value="15178" source="16024">10.5</option>
<option value="15184" source="16028">11.5</option>
<option value="15187" source="16030">12</option>
</select>
NOTE: Since the opt itself in the loop will be a regular object to use the jQuery functions over it you need to make a jQuery object with $() operand otherwise you can use it as regular NODE object and get its properties with javascript built-in properties like text, textContent or value.
UPDATE
Since you receive an error in the implementation with cheerio which does not support :first pseudo-selector, so you can select all of the options then exclude the first one in the object creation.
var opts = $('#attributesize-size_uswomen option');
var info = {};
$.each(opts, function(index, opt) {
if (index != 0)
info[$(opt).text()] = parseInt($(opt).val())
});
console.log(info);
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<select name="size_attribute[size]" id="attributesize-size_uswomen" class="size-attribute-select">
<option>Choose Your Size</option>
<option value="12773" source="16004">5.5</option>
<option value="12774" source="16006">6</option>
<option value="12775" source="16008">6.5</option>
<option value="14805" source="16010">7</option>
<option value="14809" source="16012">7.5</option>
<option value="12749" source="16014">8</option>
<option value="14816" source="16016">8.5</option>
<option value="14820" source="16018">9</option>
<option value="14824" source="16020">9.5</option>
<option value="15175" source="16022">10</option>
<option value="15178" source="16024">10.5</option>
<option value="15184" source="16028">11.5</option>
<option value="15187" source="16030">12</option>
</select>
Or if you want to keep up with the supported Cheerio approach you use this one:
var info = {};
$('#attributesize-size_uswomen').children().slice(1).each(function() {
info[$(this).text()] = parseInt($(this).val())
});
console.log(info);
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<select name="size_attribute[size]" id="attributesize-size_uswomen" class="size-attribute-select">
<option>Choose Your Size</option>
<option value="12773" source="16004">5.5</option>
<option value="12774" source="16006">6</option>
<option value="12775" source="16008">6.5</option>
<option value="14805" source="16010">7</option>
<option value="14809" source="16012">7.5</option>
<option value="12749" source="16014">8</option>
<option value="14816" source="16016">8.5</option>
<option value="14820" source="16018">9</option>
<option value="14824" source="16020">9.5</option>
<option value="15175" source="16022">10</option>
<option value="15178" source="16024">10.5</option>
<option value="15184" source="16028">11.5</option>
<option value="15187" source="16030">12</option>
</select>
Achieved using $("select option:not(:first)").each
CodePen
I have this scenario where i have 4 drop down boxes, where you can choose CM for a carport and a shed, within that carport.
I want to prompt the user with messages/errors in these scenarios:
the shed is chosen to be wider than it is long.
the shed is atleast 60cm smaller than the carports in both width and length
only one of the sheds dimensions being chosen
the form looks like this
<form name="createorder" action="FrontController" method="POST">
<input type="hidden" name="command" value="createorder">
<br>
Length of shed:<br>
<select name="lengthShed">
<option value="0">I do not want a shed</option>
<option value="180">180cm</option>
<option value="210">210cm</option>
<option value="240">240cm</option>
<option value="270">270cm</option>
<option value="300">300cm</option>
<option value="330">330cm</option>
<option value="360">360cm</option>
<option value="390">390cm</option>
<option value="420">420cm</option>
<option value="450">450cm</option>
<option value="480">480cm</option>
<option value="510">510cm</option>
<option value="540">540cm</option>
<option value="570">570cm</option>
<option value="600">600cm</option>
<option value="630">630cm</option>
<option value="660">660cm</option>
<option value="690">690cm</option>
<option value="720">720cm</option>
</select>
<br>
Width of shed:<br>
<select name="widthShed">
<option value="0">I do not want a shed</option>
<option value="18=">180cm</option>
<option value="210">210cm</option>
<option value="240">240cm</option>
<option value="270">270cm</option>
<option value="300">300cm</option>
<option value="330">330cm</option>
<option value="360">360cm</option>
<option value="390">390cm</option>
<option value="420">420cm</option>
<option value="450">450cm</option>
<option value="480">480cm</option>
<option value="510">510cm</option>
<option value="540">540cm</option>
<option value="570">570cm</option>
<option value="600">600cm</option>
<option value="630">630cm</option>
<option value="660">660cm</option>
<option value="690">690cm</option>
</select>
<br>
Width:<br>
<select name="width">
<option value="240">240cm</option>
<option value="270">270cm</option>
<option value="300">300cm</option>
<option value="330">330cm</option>
<option value="360">360cm</option>
<option value="390">390cm</option>
<option value="420">420cm</option>
<option value="450">450cm</option>
<option value="480">480cm</option>
<option value="510">510cm</option>
<option value="540">540cm</option>
<option value="570">570cm</option>
<option value="600">600cm</option>
<option value="630">630cm</option>
<option value="660">660cm</option>
<option value="690">690cm</option>
<option value="720">720cm</option>
<option value="750">750cm</option>
</select>
<br>
Length:<br>
<select name="length">
<option value="240">240cm</option>
<option value="270">270cm</option>
<option value="300">300cm</option>
<option value="330">330cm</option>
<option value="360">360cm</option>
<option value="390">390cm</option>
<option value="420">420cm</option>
<option value="450">450cm</option>
<option value="480">480cm</option>
<option value="510">510cm</option>
<option value="540">540cm</option>
<option value="570">570cm</option>
<option value="600">600cm</option>
<option value="630">630cm</option>
<option value="660">660cm</option>
<option value="690">690cm</option>
<option value="720">720cm</option>
<option value="750">750cm</option>
<option value="780">780cm</option>
</select>
Bind a function to your <select> elements onchange property.
let selects = document.querySelectorAll('select');
for(var i = 0; i < selects.length; i++){
selects[i].onchange = function(){
// Check for your conditions
// If your warning conditions are met, prompt user
}
}
That is, assuming you want the validation to happen when the user changes one of the select's values.
If you want to validate with a button click, you can instead bind the function to the click event of the button.
let button = document.getElementById(buttonID);
button.onclick = function(){
// Check for your conditions
// If conditions are met, prompt user
}
To prompt the user, you can use a simple alert() to which you pass your message. Or make a more elaborate function to do something custom.
As for your conditions, that sounds like commercial math. Might have to split your question in multiple questions here as there are a lot of possible awnsers.
It might be easier for you to add IDs to your selects so you can get them via document.getElementById(idString). You can then get their value through document.getElementById(idString).value. And to use it in math solving, you will need to parse the string that the <select> will return as value, like so parseInt(document.getelementById(idString).value).
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've got the following select menu that builds a dynamic url based on the selected value.
All values work well, except for the value "1" (i.e. 1995-96).
The variable is correctly identified (page.php?SeasonId=1), however, the page then sends to page.php?SeasonId=%081
Notice the extra %08 which I believe is a backspace?
Where is that coming from and how can I get rid of it? I'm stumped!
<script type="text/javascript">
$(function(){
$("select").selectric({
onChange: function(){
var go_to = "page.php?SeasonId=" + $("select option:selected").val();
window.location.href = go_to;
}
});
});
</script>
<select>
<option value="" selected="selected">Season</option>
<option value="18">2013-14</option>
<option value="17">2012-13</option>
<option value="16">2011-12</option>
<option value="15">2010-11</option>
<option value="14">2009-10</option>
<option value="13">2008-09</option>
<option value="12">2007-08</option>
<option value="11">2006-07</option>
<option value="10">2005-06</option>
<option value="9">2003-04</option>
<option value="8">2002-03</option>
<option value="7">2001-02</option>
<option value="6">2000-01</option>
<option value="5">1999-00</option>
<option value="4">1998-99</option>
<option value="3">1997-98</option>
<option value="2">1996-97</option>
<option value="1">1995-96</option>
</select>