How to apply background-color to a selected option?

Question

I'm writing a dropdown menu with several options and their colors. I have successfully colored the background of each option; however, once selected that background color doesn't show.

Is there a way to change this behavior? Example of my HTML below:

<select>
  <option style="background-color: green">Successful</option>
  <option style="background-color: orange">Process Failure</option>
  <option style="background-color: purple">Abandoned</option>
</select>

or also here: http://jsfiddle.net/H8HVm/1/.

@KatieK, although select is in [this](http://stackoverflow.com/questions/14168650/multi-select-box-selected-background-color-css) post, my question has to do with the — NightPharaoh, Aug 06 '13 at 23:16

score 13 · Accepted Answer · edited Sep 08 '20 at 19:55

You can use jQuery to read the class of the selected option then set that class as the class of the <select>. Here is the code, followed by a fiddle:

$("#color_me").change(function(){
    var color = $("option:selected", this).attr("class");
    $("#color_me").attr("class", color);
});

.green {
    background-color: green;
}
.orange {
    background-color: orange;
}
.pink {
    background-color: pink;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<select id="color_me" class="">
    <option class="green">successful</option>
    <option class="orange">process failure</option>
    <option class="pink">abandoned</option>
</select>

Here's the JSFiddle: http://jsfiddle.net/DrydenLong/3QUN6/

Per request, here is a breakdown of my code above:

$("#color_me").change(function(){

This line calls function when the element with the id of "color_me" is changed. i.e. an option from the select list is chosen.

    var color = $("option:selected", this).attr("class");

This defines the variable color as whatever the class of the current selected option is. The this variable is referring to the DOM element we referenced in the first line. Basically this ensures that we are getting the class from the correct <select> i.e. the <select> we just clicked on.

    $("#color_me").attr("class", color);
});

This line assigns the color variable defined above as the class of the element with the id of #color_me.

@HashemQolami Nice! Always a +1 for pure JS. JS Bin doesn't work well for me on Chrome so I made a fiddle of your code here: http://jsfiddle.net/DrydenLong/TUBKk/ — Dryden Long, Aug 06 '13 at 23:19

score 0 · Answer 2 · edited Sep 08 '20 at 19:48

var x, i, j, selElmnt, a, b, c;
x = document.getElementsByClassName("tt-select");

for (i = 0; i < x.length; i++) {
    selElmnt = x[i].getElementsByTagName("select")[0];
    a = document.createElement("DIV");
    a.setAttribute("class", "select-selected");
    a.innerHTML = selElmnt.options[selElmnt.selectedIndex].innerHTML;
    x[i].appendChild(a);
    b = document.createElement("DIV");
    b.setAttribute("class", "select-items select-hide");
    for (j = 0; j < selElmnt.length; j++) {
        /*for each option in the original select element,
        create a new DIV that will act as an option item:*/
        c = document.createElement("DIV");
        c.innerHTML = selElmnt.options[j].innerHTML;
        c.addEventListener("click", function(e) {
            var y, i, k, s, h;
            s = this.parentNode.parentNode.getElementsByTagName("select")[0];
            h = this.parentNode.previousSibling;
            for (i = 0; i < s.length; i++) {
                if (s.options[i].innerHTML == this.innerHTML) {
                    s.selectedIndex = i;
                    h.innerHTML = this.innerHTML;
                    y = this.parentNode.getElementsByClassName("same-as-selected");
                    for (k = 0; k < y.length; k++) {
                        y[k].removeAttribute("class");
                    }
                    this.setAttribute("class", "same-as-selected");
                    break;
                }
            }
            h.click();
        });
        b.appendChild(c);
    }
    x[i].appendChild(b);
    a.addEventListener("click", function(e) {
        e.stopPropagation();
        closeAllSelect(this);
        this.nextSibling.classList.toggle("select-hide");
        this.classList.toggle("select-arrow-active");
    });
}
function closeAllSelect(elmnt) {
    var x, y, i, arrNo = [];
    x = document.getElementsByClassName("select-items");
    y = document.getElementsByClassName("select-selected");
    for (i = 0; i < y.length; i++) {
        if (elmnt == y[i]) {
            arrNo.push(i)
        } else {
            y[i].classList.remove("select-arrow-active");
        }
    }
    for (i = 0; i < x.length; i++) {
        if (arrNo.indexOf(i)) {
            x[i].classList.add("select-hide");
        }
    }
}
document.addEventListener("click", closeAllSelect);

.tt-select {
    position: relative;
    height: auto;
    padding: 0px;
    margin-bottom: 30px;
    text-align: left;
}
.tt-select select {
    display: none;
}
.select-selected {
    background-color: #fff;
    color: rgba(0, 0, 0, 0.8) !important;
}
.select-selected:after {
    position: absolute;
    content: "";
    top: 14px;
    right: 10px;
    width: 0;
    height: 0;
    border: 6px solid transparent;
}
.select-selected:before {
    position: absolute;
    content: "";
    top: 18px;
    right: 10px;
    width: 0;
    height: 0;
    border: 6px solid transparent;
    border-color: transparent transparent #000000 transparent;
    transform: rotate(180deg);
}
.select-selected.select-arrow-active:before {
    border: none;
}
.select-selected.select-arrow-active:after {
    border-color: transparent transparent #000000 transparent;
    top: 10px;
}
.select-items div,.select-selected {
    color: #ffffff;
    padding: 8px 16px;
    border: 1px solid #333333;
    cursor: pointer;
}
.select-items {
    position: absolute;
    background-color: #313131;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 99;
}
.select-hide {
    display: none;
}
.select-items div:hover, .same-as-selected {
    background-color: rgba(0, 0, 0, 0.1);
}

<div class="tt-select">
    <select>
        <option value="0">Options</option>
        <option value="1">Option One</option>
        <option value="2">Option Two</option>
        <option value="3">Option Three</option>
        <option value="4">Option Four</option>
    </select>
</div>

Here is a CodePen link.

Artem Samoshkin · Answer 3 · 2020-09-09T09:46:23.040

0

This code works for me:

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
    $("select").change(function(){
        var color = $("option:selected", this).attr("class");
        $(this).attr("class", color);
    });
});
</script>

edited Sep 09 '20 at 09:46

answered Sep 08 '20 at 19:26

Artem Samoshkin

9
3

How to apply background-color to a selected option?

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