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How to use the select tag in HTML

不言Original: 2018-11-21 11:03:3412374browse

The select tag in HTML can create a public selection box in the items on the form. This article will give you a detailed introduction to the usage of the select tag.

Let’s first take a look at what is the select tag?

The select tag is the tag used to create a selection box. Use the select tag when you want the user to select from a drop-down menu item.

You can use the select tag as part of a form, or you can use JavaScript to get the value of the selected item.

How to use the select tag?

To use select tags, you can create a drop-down menu by adding option tags between the select tags.

<select name="name" id="name">
  <option value="name1">张三</option>
  <option value="name2">李四</option>
  <option value="name3">王二</option>
</select>

Complex usage of select tags

Code example:

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
	<title></title>
</head>
<body>
<label>php中文网视频课程选择：
  <select name="program" multiple size="4">
    <optgroup label="application">
      <option value="wordpress">前端视频课程</option>
      <option value="webapp">php视频教程</option>
      <option value="laravel">bootstrap视频课程</option>
    </optgroup>
    <optgroup label="mobile">
      <option value="iphone">iPhone</option>
      <option value="android">Android</option>
      <option value="unity">Unity</option>
    </optgroup>
  </select>
</label>
</body>
</html>

Instructions:

If you specify multiple attributes, you can use multiple options. If not specified, only one selection is made.

Since the size attribute is specified as size="4", only 4 lines can be displayed.

You can also scroll to show all options.

The label specified by cannot be selected by itself, but it can be displayed as a group label.

Let’s take a look at an example finally:

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8" />
  </head>
  <body>
    <form action="#" method="GET">
      <select name="name" id="name">
        <option value="who">发消息给谁？</option>
        <option value="name1">张三</option>
        <option value="name2">李四</option>
        <option value="name3">王二</option>
        <option value="name4">陈五</option>
        <option value="name5">赵六</option>
      </select>
      <input type="submit" name="submit" value="发送" />
    </form>
  </body>
</html>

The effect on the browser is as follows:

How to use the select tag in HTML

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