Develop Reference

How do I change my css dropdown to change sizes according to the size of the text?

.dropdown select {
-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
color: blue;
font-weight: bold;
text-decoration: underline;
font-size: 20px;
line-height: 1.75;
display:inline-block;
background-color: #ffffff;
background-image: none;
border-style: none;
background: url("http://cdn1.iconfinder.com/data/icons/cc_mono_icon_set/blacks/16x16/br_down.png") no-repeat right;
}
<div class="col-md-8 offset-md-2">
<span class="header"> COMPARE </span>
<span class="dropdown">
<select class="select_box" id="opts">
<p></p>
<option value="default">Select a dataset</option>
<option value="population">POPULATION</option>
<option value="popdensityperacre">POPULATION DENSITY</option>
<option value="percapitaincome">INCOME</option>
<option value="percentnonwhite">RACIAL DIVERSITY</option>
<option value="percentinpoverty">POVERTY</option>
<option value="medianhomevalue">HOME VALUE</option>
<option value="unemploymentrate">UNEMPLOYMENT</option>
<option value="percapitacriminalarrests">CRIME</option>
<option value="percapitaencampments">HOMELESSNESS</option>
<option value="medianhoursofsummerfog">FOG</option>
<option value="percentinliquefaction">LIQUEFACTION</option>
</select>
</span>
<span class="header"> BY NEIGHBORHOOD </span>
</div>
How do I get it so the box changes sizes depending on which selection is chosen? I thought it might work if I make it an inline-block and then set width to 100%.
The reason I'd like the box-size to change is that I'd like the dropdown arrow to be right next to the text, instead of staying in a fixed location.

So if I got it right, the solution would be to just add some :hover css to a class.
Look at this example on w3school:
https://www.w3schools.com/howto/howto_custom_select.asp
I clicked on "Try it yourself" and altered the code as I believe you want to.
With the following css code you can alter the div option as you want when you hover it.
.select-items div:hover {
background-color: rgba(0, 0, 0, 0.1);
height: 50px;
}
Hope it helped.
Explore the example for more things, they have css for all the parts of a selection menu.

HTML layout renders differently on fiddle and on browser

I have made a small web page, the source code of which is available on FIDDLE. It uses a jquery plugin which I made for autocomplete.
The plugin adds a new div (.mridautocomplete-list) after the initialized inputs, which contains the autocomplete list :
<input id="test1">
<div class="mridautocomplete-list" style="display: block; left: 8px; width: 169px; position: absolute; background-color: white; border: 1px solid rgb(221, 221, 221); max-height: 150px; overflow-x: hidden; overflow-y: scroll; font-family: Arial; font-size: 13.3333px; z-index: 8888;">
<p class="mrid-autocomplete-item" style="margin: 0px; padding-left: 2px; text-align: left; font-size: 13.3333px; cursor: default; background-color: white;"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="mridautocomplete-item-image" style="height: 11px; width: 11px;"><span style="color: #4682B4; font-weight: bold;">a</span>aa</p>
<p class="mrid-autocomplete-item" style="margin: 0px; padding-left: 2px; text-align: left; font-size: 13.3333px; cursor: default; background-color: white;"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="mridautocomplete-item-image" style="height: 11px; width: 11px;">b<span style="color: #4682B4; font-weight: bold;">a</span>b</p>
</div>
<input class="test2">
<div class="mridautocomplete-list"></div>
<input class="test3">
<div class="mridautocomplete-list"></div>
The problem is :
This web page renders perfectly as expected on fiddle
But when I run the same code on my browser ( without fiddle ), it doesn't get displayed properly, shifting all elements ( SHOWN IN SCREENSHOTS ATTACHED )
Can anyone explain what might be causing the problem ?

Your .test2 class is a width of 80%.
The other inputs have a default width of 173px.
If you resize the fiddle window to a larger width, you will see the same issue.
To fix this you could add a display: block to your .test2 class.

Have you already tried the display CSS property? Setting the second input to "display: block" forces the 3rd input to the next line.
Another option is to place the autocomplete Javascript just before the closing body tag. This also worked for me in Chrome, Firefox and Safari.

create dropdown list with scrollbar

I have a HTML drop down list with list of options. When user clicks on the dropdown list, first five options with scrollbar should be seen. I want to achieve this using JavaScript and CSS. As I'm new to these, please suggest how I can show the dropdown list with scrollbar so that can able to scroll and select an option from the dropdown list. Below is my HTML code:
<html>
<body>
<select>
<option value="one">Option1</option>
<option value="two">Option2</option>
<option value="three">Option3</option>
<option value="four">Option4</option>
<option value="five">Option5</option>
<option value="siz">Option6</option>
<option value="seven">Option7</option>
<option value="eight">Option8</option>
</select>
</body>
</html>
With the above html code, when the user click on the dropdown list, all options are seen without scrollbar.I want to show first five options with scrollbar.

try this https://jsfiddle.net/Ltkpshm9/ example i have added to the jsfiddel
or simply use,
<select name="select1" onmousedown="if(this.options.length>5){this.size=5;}" onchange='this.size=0;' onblur="this.size=0;">
<option value="one">Option1</option>
<option value="two">Option2</option>
<option value="three">Option3</option>
<option value="four">Option4</option>
<option value="five">Option5</option>
<option value="siz">Option6</option>
<option value="seven">Option7</option>
<option value="eight">Option8</option>
</select>

You can do this with just using html and css. You need to create a div that will contain your button as well as the "dropdown" div with the linked list inside. On the actual css for the dropdown div, you should specify a max-height to adjust how many links you want to show, as well as overflow:auto to make it scroll-able. Including a screenshot of how it should look, and here is an example just using HTML and inline CSS:enter image description here
<!DOCTYPE html>
<html>
<head>
<style type="text/css">
.dropbtn {
background-color: #4CAF50;
color: white;
padding: 16px;
font-size: 16px;
border: none;
cursor: pointer;
}
.dropdown {
position: relative;
display: inline-block;
}
.dropdown-content {
display: none;
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
max-height: 200px;
overflow: auto;
box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
}
.dropdown-content a {
color: black;
padding: 12px 16px;
text-decoration: none;
display: block;
}
.dropdown-content a:hover {background-color: #f1f1f1}
.dropdown:hover .dropdown-content {
display: block;
}
.dropdown:hover .dropbtn {
background-color: #3e8e41;
}
</style>
</head>
<body>
<div class="dropdown">
<button class="dropbtn">Dropdown</button>
<div class="dropdown-content">
Option 1
Option 2
Option 3
Option 4
Option 5
Option 6
Option 7
Option 8
</div>
</div>
</body>
</html>
*Also I just realized that I created an example with links and yours uses the option element, but the same concept should apply. Just edit the css of the dropdown-content class to include option:
.dropdown-content a, option {//same css here}

add a delete icon in front of each row in list in jquery

I have a list control and at run time when I bind data to the control I want to append a delete icon or a button to each row in jquery, so that I can delete a row if I want to. Here is the code that I am using to bind data to the control.
$(response.aaData).each(function (index, val) {
$("#multiselectSubCat")
.append($('<option></option>').val(val.SubCategoryId).html(val.SubCategoryName));
});
Rendered
<select name="from" id="multiselectSubCat" multiple="multiple" style="width: 300px; top: 100px">
<option value="9">Category1</option>
<option value="10">Category2</option>
<option value="11">Category3</option>
<option value="12">Category4</option>
<option value="13">Category5</option>
<option value="22">Category6</option>
</select>

I want to know whether you want input button or image to show user that you can delete particular record?
I have made an example where I am adding background.
.select-box {
height: 400px;
}
.select-box option {
background: url(https://cdn2.iconfinder.com/data/icons/snipicons/500/minus-sign-16.png) 1px -1px no-repeat;
padding-left: 25px;
cursor: pointer;
}
.select-box option:hover {
background: url(https://cdn2.iconfinder.com/data/icons/snipicons/500/minus-sign-16.png) 1px -1px no-repeat #eee;
}
<select name="from" id="multiselectSubCat" multiple="multiple" class="select-box" style="width: 300px; top: 100px">
<option value="9">Category1</option>
<option value="10">Category2</option>
<option value="11">Category3</option>
<option value="12">Category4</option>
<option value="13">Category5</option>
<option value="22">Category6</option>
</select>

Building on this
How can I use <ul> list instead of <select> dropdown for the languages switcher?
have a go at this:
var nav = $('#nav');
var selection = $('.select');
var select = selection.find('li');
nav.click(function(event) {
if (nav.hasClass('active')) {
nav.removeClass('active');
selection.stop().slideUp(200);
} else {
nav.addClass('active');
selection.stop().slideDown(200);
}
event.preventDefault();
});
select.click(function(event) {
// updated code to select the current language
select.removeClass('active');
$(this).addClass('active');
alert ("location.href = 'index.php?lang=" + $(this).attr('data-value'));
});
$(".del").on("click",function(e) {
e.preventDefault();
$(this).parent().remove();
});
h2 {
width: 200px;
background: #222;
color: #eee;
line-height: 25px;
font-size: 14px;
padding: 0 10px;
cursor: pointer;
}
ol
{
list-style-type: none;
}
ol.select {
display: none;
}
ol.select > li {
width: 200px;
background: #eee;
line-height: 25px;
font-size: 14px;
padding: 0 10px;
cursor: pointer;
}
ol.select > li:hover {
background: #aaa;
}
.select a { text-decoration:none }
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<h2 id="nav">Choose Language</h2>
<ol class="select">
<li data-value="en"><a class="del" href="#">X</a> English</li>
<li data-value="de"><a class="del" href="#">X</a> Deutsch</li>
</ol>

U did the right thing just little changes required
<a href="http://jsfiddle.net/ajaymalhotra15/2tmntdft/" > click here to see code </a>

Breaking nicely into an additional div without using extensive javascript?

I have the following HTML markup:
<div id="PlanViewControls" class="ui-widget ui-state-default ui-corner-all" >
<div id="Level1Controls">
<div class="separated">
<div id="PlanViewZoomSlider"></div>
</div>
<div class="separator">|</div>
<div class="separated">
<label>
Rack Info:
<select id="RackInfoSelect">
<option value="Name">Name</option>
</select>
</label>
</div>
<div class="separator">|</div>
<div class="separated marginedTop">
<label>
Enable Auto-Refresh:
<input id="PlanViewRefreshCheckbox" name="Enable Auto-Refresh" value="value" type="checkbox" />
</label>
</div>
</div>
<div id="Level2Controls">
<div class="separated">
<label>
Levels To Display:
<select id="LevelSelect">
<option value="All">All</option>
</select>
</label>
</div>
<div class="separator">|</div>
<div class="separated marginedTop">
<a id="ExportPlanView" href="javascript:void(0)" target="_blank" title="Export the plan view as a pdf.">
<span class="cs-icon cs-icon-edit-search-results" style="float: left; margin-right: 5px;"></span>
<label id="ExportLabel">Export</label>
</a>
</div>
</div>
</div>
CSS (w/ latest jQueryUI for major styling)
#RightPaneContent
{
overflow: hidden;
}
#PlanViewControls
{
display: none;
min-height: 20px;
margin-bottom: 5px;
}
#PlanViewControls > div
{
min-height: 20px;
padding-top: 5px;
padding-bottom: 3px;
padding-left: 3px;
padding-right: 5px;
}
.component-slider
{
width: 100px;
margin-left: 5px;
margin-top: 3px;
}
#PlanViewControls label
{
display: block;
padding-left: 15px;
text-indent: -15px;
float: left;
}
#PlanViewControls input
{
width: 13px;
height: 13px;
padding: 0;
margin:0;
vertical-align: bottom;
position: relative;
}
#PlanViewControls div.separator
{
padding-top: 4px;
}
.marginedTop
{
margin-top: 3px;
}
#ExportLabel
{
padding-top: 1px;
}
#PlanViewControls
{
min-width: 700px;
}
#ExportLabel:hover
{
cursor: pointer;
}
#PlanViewControlsOverlay
{
background: white;
opacity: 0.7;
filter: alpha(opacity=70);
position: absolute;
z-index: 10001;
}
I am really unhappy with this solution because on wide displays the second level of controls looks unnatural -- there is enough space to hold them all in one level.
The solution I currently have in my head consists of:
Measure the available width of the space I would like to take up.
Measure the width of each control I have.
Place as many controls as I can on the first line.
Append a second level if I run out of space.
Obviously it doesn't make sense to collapse to just 1 item per row -- I would be specifiying a min-width for my first level controls.
Is this the proper way to go about doing this? Or is there an easy way to express this using CSS/HTML?
Just as a visual helper I've attached below what my page looks like on a landscape monitor vs a portrait monitor.

Hm, I would use pure CSS for that:
<div id="controls">
<div> "Separated" </div>
<div> another control </div>
<div> and one with an icon </div>
...
</div>
#controls {
width: 100%;
min-width: 10em; /* or whatever */
/* implicit height: auto; */
overflow: hidden; /* to hide the leftmost borders */
}
#controls > div {
display: inline-block;
border-left: 1px solid blue;
padding: 1em 0;
margin: 1em -1px; /* move the borders 1px into the off */
}
This should give a scalable toolbar, and there is no need for different level-divs.