how to get value from autocomplete material ui with code examples

Autocomplete is a powerful user interface element that allows users to quickly and easily find and select items from a large set of options. Material UI, a popular UI library for React, provides an Autocomplete component that is easy to use and highly customizable. In this article, we will discuss how to get value from Autocomplete Material UI, and provide code examples to help you get started.

Getting Started

To use Autocomplete in Material UI, you will need to install the library and import the Autocomplete component. You can do this by running the following command in your terminal:

npm install @material-ui/core

Once you have installed Material UI, you can import the Autocomplete component like this:

import Autocomplete from '@material-ui/core/Autocomplete';

Creating an Autocomplete Component

To create an Autocomplete component in Material UI, you will need to define an array of options to be displayed in the dropdown list. Each option in the array should be an object with a label and a value property. The label property will be displayed in the dropdown list, while the value property will be used to store the selected option.

const options = [
  { label: 'Option 1', value: 1 },
  { label: 'Option 2', value: 2 },
  { label: 'Option 3', value: 3 },
];

Next, you can define your Autocomplete component and pass in the options array as a prop. You can also define a value state and an onChange handler to manage the selected option.

const [value, setValue] = useState(null);

const handleChange = (event, newValue) => {
  setValue(newValue);
};

<Autocomplete
  options={options}
  value={value}
  onChange={handleChange}
  getOptionLabel={(option) => option.label}
  renderInput={(params) => <TextField {...params} label="Select an option" />}
/>

In this example, the Autocomplete component is rendered with a label of "Select an option". The getOptionLabel prop is used to specify that the label property of each option should be used as the display value in the dropdown list.

Customizing the Autocomplete Component

Material UI Autocomplete is highly customizable, allowing you to adjust the appearance and behavior of the component to suit your needs. You can customize the following aspects of the Autocomplete component:

Input component
Popup component
Listbox component
Clear icon
Filter options
Highlighted option
Grouped options

Let's take a look at a few examples of how to customize the Autocomplete component.

Customizing the Input Component

You can customize the Input component of the Autocomplete component by passing a custom component to the renderInput prop. For example, you can add an icon to the input field like this:

<Autocomplete
  options={options}
  value={value}
  onChange={handleChange}
  getOptionLabel={(option) => option.label}
  renderInput={(params) => (
    <TextField
      {...params}
      label="Select an option"
      InputProps={{
        ...params.InputProps,
        endAdornment: (
          <InputAdornment position="end">
            <IconButton>
              <SearchIcon />
            </IconButton>
          </InputAdornment>
        ),
      }}
    />
  )}
/>

In this example, we pass a custom InputProps object to the TextField component. The endAdornment property is set to an IconButton component with a SearchIcon. This will add the icon to the right side of the input field.

Customizing the Popup Component

You can customize the Popup component of the Autocomplete component by passing a custom component to the renderPopup prop. For example, you can change the background color of the popup like this:

<Autocomplete
  options={options}
  value={value}
  onChange={handleChange}
  getOptionLabel={(option) => option.label}
  renderInput={(params) => <TextField {...params} label="Select an option" />}
  renderPopup={(props, popupState) => (
    <Popover
      {...props}
      sx={{ backgroundColor: 'primary.main' }}
      {...popupState}
    />
  )}
/>

In this example, we pass a custom renderPopup function to the Autocomplete component. This function receives the props and popupState arguments, which can be used to customize the appearance and behavior of the popup. In this case, we use a Popover component with a custom background color.

Customizing the Listbox Component

You can customize the Listbox component of the Autocomplete component by passing a custom component to the ListboxComponent prop. For example, you can change the list item background color like this:

<Autocomplete
  options={options}
  value={value}
  onChange={handleChange}
  getOptionLabel={(option) => option.label}
  renderInput={(params) => <TextField {...params} label="Select an option" />}
  ListboxComponent={(props) => (
    <ul {...props} sx={{ backgroundColor: 'primary.main' }} />
  )}
/>

In this example, we pass a custom ListboxComponent function to the Autocomplete component. This function receives the props argument, which can be used to customize the appearance and behavior of the listbox. In this case, we use a ul element with a custom background color.

Filtering Options

By default, the Autocomplete component filters options based on the input value. You can customize the filter behavior by passing a custom filterOptions function to the filterOptions prop. For example, you can filter options based on a specific property like this:

const filterOptions = (options, { inputValue }) => {
  return options.filter(
    (option) => option.label.toLowerCase().indexOf(inputValue.toLowerCase()) !== -1
  );
};

<Autocomplete
  options={options}
  value={value}
  onChange={handleChange}
  getOptionLabel={(option) => option.label}
  renderInput={(params) => <TextField {...params} label="Select an option" />}
  filterOptions={filterOptions}
/>

In this example, we pass a custom filterOptions function to the Autocomplete component. This function receives the options and inputValue arguments, which can be used to filter the options array based on the input value. In this case, we filter options based on the label property.

Conclusion

Material UI Autocomplete is a powerful and customizable UI component that can help you create a rich user experience in your React application. By using the tips and code examples provided in this article, you should be able to get started with Autocomplete and customize it to suit your needs. With a little creativity, you can create an Autocomplete component that is both functional and beautiful, and provides a seamless user experience for your application's users.
Sure, there are several adjacent topics that are relevant to Autocomplete in Material UI, including React hooks, APIs, and data structures.

React Hooks

React hooks are a powerful feature in React that allows you to add state and other features to functional components. Autocomplete in Material UI can be used with React hooks to manage the state of the selected option. For example, you can use the useState hook to manage the value state of the Autocomplete component, and the useEffect hook to perform actions when the selected option changes.

import React, { useState, useEffect } from 'react';
import Autocomplete from '@material-ui/core/Autocomplete';

const options = [
  { label: 'Option 1', value: 1 },
  { label: 'Option 2', value: 2 },
  { label: 'Option 3', value: 3 },
];

function AutocompleteExample() {
  const [value, setValue] = useState(null);

  useEffect(() => {
    console.log(`Selected value: ${value}`);
  }, [value]);

  const handleChange = (event, newValue) => {
    setValue(newValue);
  };

  return (
    <Autocomplete
      options={options}
      value={value}
      onChange={handleChange}
      getOptionLabel={(option) => option.label}
      renderInput={(params) => <TextField {...params} label="Select an option" />}
    />
  );
}

In this example, we define an Autocomplete component using the useState and useEffect hooks. The value state is managed with the useState hook, and the useEffect hook is used to log the selected value to the console whenever it changes.

APIs

Autocomplete in Material UI can also be used with APIs to fetch options dynamically. For example, you can use the useEffect hook and the fetch API to fetch options from a server:

import React, { useState, useEffect } from 'react';
import Autocomplete from '@material-ui/core/Autocomplete';

function AutocompleteExample() {
  const [options, setOptions] = useState([]);
  const [value, setValue] = useState(null);

  useEffect(() => {
    async function fetchData() {
      const response = await fetch('https://api.example.com/options');
      const data = await response.json();
      setOptions(data);
    }

    fetchData();
  }, []);

  const handleChange = (event, newValue) => {
    setValue(newValue);
  };

  return (
    <Autocomplete
      options={options}
      value={value}
      onChange={handleChange}
      getOptionLabel={(option) => option.label}
      renderInput={(params) => <TextField {...params} label="Select an option" />}
    />
  );
}

In this example, we define an Autocomplete component that fetches options from an API using the useEffect hook and the fetch API. The options state is managed with the useState hook, and the value state is managed with the setValue function.

Data Structures

Finally, Autocomplete in Material UI can be used with data structures like arrays and objects to store and manipulate options. For example, you can use the map function to transform an array of options into an array of React components:

import React, { useState } from 'react';
import Autocomplete from '@material-ui/core/Autocomplete';

const options = [
  { label: 'Option 1', value: 1 },
  { label: 'Option 2', value: 2 },
  { label: 'Option 3', value: 3 },
];

function AutocompleteExample() {
  const [value, setValue] = useState(null);

  const handleChange = (event, newValue) => {
    setValue(newValue);
  };

  return (
    <Autocomplete
      options={options      value={value}
      onChange={handleChange}
      getOptionLabel={(option) => option.label}
      renderInput={(params) => <TextField {...params} label="Select an option" />}
      renderOption={(option) => (
        <div>
          <Typography variant="body1">{option.label}</Typography>
          <Typography variant="caption">{`Value: ${option.value}`}</Typography>
        </div>
      )}
    />
  );
}

In this example, we define an Autocomplete component that uses the map function to transform the options array into an array of React components. The renderOption prop is used to render each option as a div containing a Typography component for the label and a Typography component for the value.

Conclusion

Autocomplete in Material UI is a versatile and flexible UI component that can be used with a variety of React features and technologies. By exploring these adjacent topics, such as React hooks, APIs, and data structures, you can unlock the full potential of Autocomplete and create powerful and dynamic user interfaces. With the help of the code examples provided in this article, you should be well on your way to building rich and engaging applications with Material UI Autocomplete.

how to get value from autocomplete material ui with code examples

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Ahmed Zakaria

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Ahmed Zakaria

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