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Table of Contents
Practical tips: Support preset values ??and free input
Notes: Compatibility and Style Limitations
Home Web Front-end HTML Tutorial Implementing simple data lists with the HTML `` element.

Implementing simple data lists with the HTML `` element.

Jul 03, 2025 am 02:15 AM

The <datalist> element of HTML can easily realize the automatic completion function of the input box. Its core advantage is that it can complete the basic functions without JavaScript; the specific steps are as follows: 1. Associate <input> and <datalist> with id through list attributes; 2. Define multiple

Implementing simple data lists with the HTML `<datalist>` element.

It is actually quite convenient to use the HTML <datalist></datalist> element to implement a simple data list, especially suitable for adding automatic completion function to the input box. It is not as complicated as JavaScript, and does not require additional libraries. You can solve the basic suggested options by simply using HTML.

Implementing simple data lists with the HTML `<datalist>` element. ` element." />

Basic usage: associate <input> and <datalist></datalist>

<datalist></datalist> itself will not be displayed directly, but will be used in conjunction with <input> . You just need to specify an ID to list attribute of <input> and then make id of <datalist></datalist> correspond to it.

Implementing simple data lists with the HTML `<datalist>` element. ` element." />

For example:

 <input type="text" list="fruits" />
<datalist id="fruits">
  <option value="Apple"></option>
  <option value="Banana"></option>
  <option value="Cherry"></option>
  <option value="Orange"></option>
</datalist>

In this way, when the user typed in the input box, the browser will automatically match and pop up the suggestion item.

Implementing simple data lists with the HTML `<datalist>` element. ` element." />

Practical tips: Support preset values ??and free input

One of the major advantages of <datalist> is that it allows users to enter content that is not in the list. In other words, it is not like "only select but not lose" like the drop-down selection box, but "can choose or lose".

This is very suitable for some search scenarios, such as:

  • Search for city name (users may enter new name)
  • Product keywords (hopefully there are hints but no restrictions)

You can add several common options like this to improve the user experience:

 <datalist id="cities">
  <option value="Beijing"></option>
  <option value="Shanghai"></option>
  <option value="Guangzhou"></option>
  <option value="Shenzhen"></option>
</datalist>

Notes: Compatibility and Style Limitations

Although <datalist></datalist> is very convenient, there are some minor issues that need to be paid attention to:

  • Browser compatibility is pretty good, and mainstream modern browsers support it, but the mobile Safari performed inconsistently in earlier versions.
  • The style control is limited and the appearance cannot be adjusted as well as the custom drop-down menu.
  • Grouped or icon-like data items are not supported, and are only suitable for simple text suggestions.

If your project requires high styles or requires more complex interactions, you still have to consider JS solutions, such as using third-party libraries.


Basically that's it. Implementing data lists with <datalist></datalist> is simple and suitable for input suggestions scenarios that do not require complex logic. It is quick to write and easy to maintain, just don't expect it to be too "fancy".

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