我試圖在select中的option標記中添加一個圖像，但是當我運行代碼時，它不顯示圖像。
這是代碼:
HTML:
<!DOCTYPE html>
<html lang="en" >
<head>
<meta charset="UTF-8">
<title>Custom select box Jquery Plugin by VJ</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css">
<link rel="stylesheet" href="css/style.css">
</head>
<body>
<div class="container">
<div class="selected-item">
<p>You Selected Country : <span>Select</span></p>
</div>
<select name="" id="cusSelectbox">
<option value="Select">Select</option>
<option value="India"><img src="https://static.webshopapp.com/shops/094414/files/054959460/the-united-states-flag-icon-free-download.jpg">India</option>
<option value="Nepal">Nepal</option>
</select>
</div>
<script src='http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js'></script>
<script src="js/index.js"></script>
</body>
</html>& lt選擇& gt并且& lt選項& gt標簽很難定制，任何對一個瀏覽器適用的東西對其他瀏覽器都不適用。
解決辦法 忘記定制& lt選擇& gt，創建一個偽-& lt；選擇& gt?使用& lt詳情& gt并且& lt總結& gt & lt選擇& gt& lt詳情& gt& amp& lt總結& gt 忘記定制& lt選項& gt，創建一個偽-& lt；選項& gt?使用& lt輸入類型= ' radio ' & gt并且& lt標簽& gt & lt選項& gt& lt輸入類型= ' radio ' & gt& amp& lt標簽& gt ?The偽-& lt；選擇& gt還有偽-& lt；選項& gt標簽在外觀和行為上與標準& lt選擇& gt并且& lt選項& gt標簽。更重要的是，它可以存儲和處理一個值，并且可以注冊到更改事件中。
演示 詳細信息在演示中進行了注釋
/*| For Demonstration Purposes
This is a test to prove that this pseudo-<select> functions like
a real <select> by logging the value of the selected pseudo-
<option> to the console.
*/
var xC = document.forms.container;
var xE = xC.elements;
var vR = xE.rad;
xC.onchange = function() {
console.log(vR.value);
}html,
body {
font: 400 small-caps 16px/1.25 Arial;
}
fieldset {
width: fit-content;
padding: 0;
}
legend {
font-size: 1rem
}
details {
width: 150px;
cursor: pointer;
margin: 0 4px -5px 0;
padding: 0 0 0 10px;
}
summary {
position: relative;
width: 96%;
outline: 0.5px ridge grey;
}
/*
Hides <detail>'s default arrow
*/
details summary {
list-style: none;
}
details summary::marker {
display: none;
}
/*| Pseudo-<option>
All pseudo-<option> are initially hidden and
<label class='opt'> are the only tags that will show/hide,
the next comment explains how.
*/
.rad {
display: none
}
.opt {
display: none;
margin: 0 0 2px 0;
cursor: pointer;
font-size: 0.9rem;
box-shadow: -2px -2px 11px rgba(0, 0, 0, 0.3) inset;
}
/*| Two Conditions
1. If <details open='true'> all <label class='opt'> are visible.
=============================================
2. if <input class='rad' type='radio' checked> then the
<label class='opt'> that proceeds the radio button is visible.
*/
[open] .opt,
.rad:checked+.opt {
display: block;
}
/*| For Demonstration Purposes
This ruleset changes how the console is displayed.
*/
.as-console-wrapper {
width: 50%;
min-height: 100%;
margin-left: 50%;
font-variant: normal;
}
.as-console-row.as-console-row::after {
content: '';
padding: 0;
margin: 0;
border: 0;
width: 0;
}<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Custom select box Jquery Plugin by VJ</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" >
<!--| Flag Icons
This stylesheet provides the flag icons.
For details, go to:
https://afeld.github.io/emoji-css/
-->
<link rel="stylesheet" />
</head>
<body>
<form id="container">
<fieldset>
<legend>Country</legend>
<!--| Pseudo-<select>
<details> provides the dropdown behavior and
<summary> contains the pseudo-<option>
-->
<details>
<summary>
<!--| 4 Pseudo-<option>
Each <label> and <input type='radio'> pair are
synced to each other by matching the values of
<label for="ID"> and <input id="ID">.
-->
<!--| Trigger and State
When <label> is clicked ... <input type='radio'>
is checked. This simple "cause and effect" can
be leveraged into a system of states (ie off/on).
For details, review the CSS.
-->Origin
</summary>
<input id='X' type='radio' class='rad' name='rad' value="" checked>
<label class='opt' for='X'>
?????????
</label>
<input id='US' type='radio' class='rad' name='rad' value="United States">
<label class='opt' for='US'>
<i class='em em-us'></i>
United States
</label>
<input id='GB' type='radio' class='rad' name='rad' value="Great Britain">
<label class='opt' for='GB'>
<i class='em em-gb'></i>
Great Britain
</label>
<input id='IN' type='radio' class='rad' name='rad' value="India">
<label class='opt' for='IN'>
<i class='em em-flag-in'></i>
India
</label>
<input id='NP' type='radio' class='rad' name='rad' value="Nepal">
<label class='opt' for='NP'>
<i class='em em-flag-np'></i>
Nepal
</label>
</details>
</fieldset>
</form>
</body>
</html>