The dropdown list in HTML is an important element for form building purposes or for showing the selection list from which the user can select one or multiple values. This kind of selection list in HTML is known as the Dropdown list. It is created using
Let’s see how the Dropdown list is going to be created:
Syntax:
<select> <option value="">option1</option> <option value="">option2</option> <option value="">option3</option> <option value="">option3</option> </select>
Example:
<select name="color"> <option value="red">Red</option> <option value="purple">Purple </option> </select>
As shown in the above syntax , is a tag used to create Dropdown list.
Setting background color or color to the hover by using code:
.dropdown a:hover{
Background-color: color_name;
}Position for the dropdown list is defined into two values: position: a relative who is used to display the content of the list exactly right below the select list button. With the help of position: absolute;
Min-width is one of the properties used to give a specific width to the Drop Down list. We can set it as long as our drop-down button by setting the width to 100%. The above syntax is defined for single attribute selection; now, we will see how multiple options are going to be selected from the item list.
Syntax:
<select multiple> <option value="">option1</option> <option value="">option2</option> </select>
Example:
<select name="subject" multiple> <option value="math">Math</option> <option value="english">English</option> <option value="science">Science</option> <option value="biology">Biology</option> </select>
After studying the syntax now, we will see how exactly the Dropdown list is going to work in HTML. There are some attributes that are used in the
The following examples will show how exactly the Dropdown list is going to be used:
Code:
<head> <title>DropDown List</title> </head> <body> <h4>Seven Wonders of the world</h4> <form> <select name = "dropdown"> <option value = "taj" selected>Taj Mahal</option> <option value = "china">Great Wall of China</option> <option value = "chirst" required>Christ the Redeemer Satue</option> <option value = "machu" disabled>Machu Picchu</option> <option value = "chichen">Chichen Itza</option> <option value = "colossem">The Roman Colosseum</option> <option value = "petra">Petra</option> </select> </form> </body>
The above example contains different options like disabled, selected, required, etc., which is shown in the output screen.
Output:
Code:
<html>
<body>
<form id="dropdowndemo">
<select id="multiselectdd">
<option>Mumbai</option>
<option>Pune</option>
<option>Nagpur</option>
<option>Solapur</option>
<option>Latur</option>
</select>
<input type="button" onclick="multipleFunc()" value="Select multiple options">
</form>
<p>Multiple options can be selected here .Please press ctrl key and select multiple options at a time. </p>
<script>
function multipleFunc() {
document.getElementById("multiselectdd").multiple = true;
}
</script>
</body>
</html>As shown in the below screenshot, select multiple options from the dropdown list, press the given button and select multiple options by pressing on CTRL.
Output:
Code:
<!DOCTYPE html>
<html>
<head>
<style>
.dropdownbtn {
background-color: black;
color: white;
padding: 12px;
font-size: 12px;
}
.dropdowndemo{
position:fixed;
display: block;
}
.dropdownlist-content {
display: none;
position: absolute;
background-color: greenyellow;
min-width: 120px;
z-index: 1;
}
.dropdownlist-content a {
color: darkblue;
padding: 14px 18px;
display: block;
}
.dropdownlist-content a:hover {background-color: lightcyan;}
.dropdowndemo:hover .dropdownlist-content {display: block;}
.dropdowndemo:hover .dropdownbtn {background-color: blue;}
</style>
</head>
<body>
<h2>Hover Dropdown Demo</h2>
<div class="dropdowndemo">
<button class="dropdownbtn">HTML forms Element</button>
<div class="dropdownlist-content">
<a href="#">Links</a>
<a href="#">Dropdown list</a>
<a href="#">Input Field</a>
<a href="#">Button</a>
<a href="#">Radio Buttons</a>
</div>
</div>
</body>
</html>The dropdown list will be open on the hover effect.
Output:
We can conclude that the Dropdown list is used to select an option from the selection list. It is used to select single or multiple options at a time. Users can select an option from the list as per their choice, so it becomes more user-friendly. Attributes listed above is used with the select tags to do various selection operations with the Dropdown list.
This is a guide to Dropdown List in HTML. Here we discuss how Dropdown List Work in HTML and its Examples with Code Implementation. You can also go through our other related articles to learn more –
Das obige ist der detaillierte Inhalt vonDropdown-Liste in HTML. Für weitere Informationen folgen Sie bitte anderen verwandten Artikeln auf der PHP chinesischen Website!
![[Web-Frontend] Node.js-Schnellstart](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
