Radio

Radio.

When To Use#

  • Used to select a single state from multiple options.

  • The difference from Select is that Radio is visible to the user and can facilitate the comparison of choice, which means there shouldn't be too many of them.

Examples

The simplest use.

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import { Radio } from 'infrad';
import React from 'react';

const App: React.FC = () => <Radio>Radio</Radio>;

export default App;

A group of radio components.

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import type { RadioChangeEvent } from 'infrad';
import { Radio } from 'infrad';
import React, { useState } from 'react';

const App: React.FC = () => {
  const [value, setValue] = useState(1);

  const onChange = (e: RadioChangeEvent) => {
    console.log('radio checked', e.target.value);
    setValue(e.target.value);
  };

  return (
    <Radio.Group onChange={onChange} value={value}>
      <Radio value={1}>A</Radio>
      <Radio value={2}>B</Radio>
      <Radio value={3}>C</Radio>
      <Radio value={4}>D</Radio>
    </Radio.Group>
  );
};

export default App;





Render radios by configuring options. Radio type can also be set through the optionType parameter.

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import type { RadioChangeEvent } from 'infrad';
import { Radio } from 'infrad';
import React, { useState } from 'react';

const plainOptions = ['Apple', 'Pear', 'Orange'];
const options = [
  { label: 'Apple', value: 'Apple' },
  { label: 'Pear', value: 'Pear' },
  { label: 'Orange', value: 'Orange' },
];
const optionsWithDisabled = [
  { label: 'Apple', value: 'Apple' },
  { label: 'Pear', value: 'Pear' },
  { label: 'Orange', value: 'Orange', disabled: true },
];

const App: React.FC = () => {
  const [value1, setValue1] = useState('Apple');
  const [value2, setValue2] = useState('Apple');
  const [value3, setValue3] = useState('Apple');
  const [value4, setValue4] = useState('Apple');

  const onChange1 = ({ target: { value } }: RadioChangeEvent) => {
    console.log('radio1 checked', value);
    setValue1(value);
  };

  const onChange2 = ({ target: { value } }: RadioChangeEvent) => {
    console.log('radio2 checked', value);
    setValue2(value);
  };

  const onChange3 = ({ target: { value } }: RadioChangeEvent) => {
    console.log('radio3 checked', value);
    setValue3(value);
  };

  const onChange4 = ({ target: { value } }: RadioChangeEvent) => {
    console.log('radio4 checked', value);
    setValue4(value);
  };

  return (
    <>
      <Radio.Group options={plainOptions} onChange={onChange1} value={value1} />
      <br />
      <Radio.Group options={optionsWithDisabled} onChange={onChange2} value={value2} />
      <br />
      <br />
      <Radio.Group options={options} onChange={onChange3} value={value3} optionType="button" />
      <br />
      <br />
      <Radio.Group
        options={optionsWithDisabled}
        onChange={onChange4}
        value={value4}
        optionType="button"
        buttonStyle="solid"
      />
    </>
  );
};

export default App;

Passing the name property to all input[type="radio"] that are in the same Radio.Group. It is usually used to let the browser see your Radio.Group as a real "group" and keep the default behavior. For example, using left/right keyboard arrow to change your selection that in the same Radio.Group.

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import { Radio } from 'infrad';
import React from 'react';

const App: React.FC = () => (
  <Radio.Group name="radiogroup" defaultValue={1}>
    <Radio value={1}>A</Radio>
    <Radio value={2}>B</Radio>
    <Radio value={3}>C</Radio>
    <Radio value={4}>D</Radio>
  </Radio.Group>
);

export default App;

Solid radio button style.

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import { Radio } from 'infrad';
import React from 'react';

const App: React.FC = () => (
  <>
    <Radio.Group defaultValue="a" buttonStyle="solid">
      <Radio.Button value="a">Hangzhou</Radio.Button>
      <Radio.Button value="b">Shanghai</Radio.Button>
      <Radio.Button value="c">Beijing</Radio.Button>
      <Radio.Button value="d">Chengdu</Radio.Button>
    </Radio.Group>
    <Radio.Group defaultValue="c" buttonStyle="solid" style={{ marginTop: 16 }}>
      <Radio.Button value="a">Hangzhou</Radio.Button>
      <Radio.Button value="b" disabled>
        Shanghai
      </Radio.Button>
      <Radio.Button value="c">Beijing</Radio.Button>
      <Radio.Button value="d">Chengdu</Radio.Button>
    </Radio.Group>
  </>
);

export default App;

Radio unavailable.

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import { Button, Radio } from 'infrad';
import React, { useState } from 'react';

const App: React.FC = () => {
  const [disabled, setDisabled] = useState(true);

  const toggleDisabled = () => {
    setDisabled(!disabled);
  };

  return (
    <>
      <Radio defaultChecked={false} disabled={disabled}>
        Disabled
      </Radio>
      <Radio defaultChecked disabled={disabled}>
        Disabled
      </Radio>
      <br />
      <Button type="primary" onClick={toggleDisabled} style={{ marginTop: 16 }}>
        Toggle disabled
      </Button>
    </>
  );
};

export default App;

Vertical Radio.Group, with more radios.

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import type { RadioChangeEvent } from 'infrad';
import { Input, Radio, Space } from 'infrad';
import React, { useState } from 'react';

const App: React.FC = () => {
  const [value, setValue] = useState(1);

  const onChange = (e: RadioChangeEvent) => {
    console.log('radio checked', e.target.value);
    setValue(e.target.value);
  };

  return (
    <Radio.Group onChange={onChange} value={value}>
      <Space direction="vertical">
        <Radio value={1}>Option A</Radio>
        <Radio value={2}>Option B</Radio>
        <Radio value={3}>Option C</Radio>
        <Radio value={4}>
          More...
          {value === 4 ? <Input style={{ width: 100, marginLeft: 10 }} /> : null}
        </Radio>
      </Space>
    </Radio.Group>
  );
};

export default App;

The combination of radio button style.

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import type { RadioChangeEvent } from 'infrad';
import { Radio } from 'infrad';
import React from 'react';

const onChange = (e: RadioChangeEvent) => {
  console.log(`radio checked:${e.target.value}`);
};

const App: React.FC = () => (
  <>
    <Radio.Group onChange={onChange} defaultValue="a">
      <Radio.Button value="a">Hangzhou</Radio.Button>
      <Radio.Button value="b">Shanghai</Radio.Button>
      <Radio.Button value="c">Beijing</Radio.Button>
      <Radio.Button value="d">Chengdu</Radio.Button>
    </Radio.Group>
    <Radio.Group onChange={onChange} defaultValue="a" style={{ marginTop: 16 }}>
      <Radio.Button value="a">Hangzhou</Radio.Button>
      <Radio.Button value="b" disabled>
        Shanghai
      </Radio.Button>
      <Radio.Button value="c">Beijing</Radio.Button>
      <Radio.Button value="d">Chengdu</Radio.Button>
    </Radio.Group>
    <Radio.Group disabled onChange={onChange} defaultValue="a" style={{ marginTop: 16 }}>
      <Radio.Button value="a">Hangzhou</Radio.Button>
      <Radio.Button value="b">Shanghai</Radio.Button>
      <Radio.Button value="c">Beijing</Radio.Button>
      <Radio.Button value="d">Chengdu</Radio.Button>
    </Radio.Group>
  </>
);

export default App;

There are three sizes available: large, medium, and small. It can coordinate with input box.

expand codeexpand code
import { Radio } from 'infrad';
import React from 'react';

const App: React.FC = () => (
  <>
    <Radio.Group defaultValue="a" size="large">
      <Radio.Button value="a">Hangzhou</Radio.Button>
      <Radio.Button value="b">Shanghai</Radio.Button>
      <Radio.Button value="c">Beijing</Radio.Button>
      <Radio.Button value="d">Chengdu</Radio.Button>
    </Radio.Group>
    <Radio.Group defaultValue="a" style={{ marginTop: 16 }}>
      <Radio.Button value="a">Hangzhou</Radio.Button>
      <Radio.Button value="b">Shanghai</Radio.Button>
      <Radio.Button value="c">Beijing</Radio.Button>
      <Radio.Button value="d">Chengdu</Radio.Button>
    </Radio.Group>
    <Radio.Group defaultValue="a" size="small" style={{ marginTop: 16 }}>
      <Radio.Button value="a">Hangzhou</Radio.Button>
      <Radio.Button value="b">Shanghai</Radio.Button>
      <Radio.Button value="c">Beijing</Radio.Button>
      <Radio.Button value="d">Chengdu</Radio.Button>
    </Radio.Group>
  </>
);

export default App;

API#

Radio/Radio.Button#

PropertyDescriptionTypeDefault
autoFocusWhether get focus when component mountedbooleanfalse
checkedSpecifies whether the radio is selectedbooleanfalse
defaultCheckedSpecifies the initial state: whether or not the radio is selectedbooleanfalse
disabledDisable radiobooleanfalse
valueAccording to value for comparison, to determine whether the selectedany-

RadioGroup#

Radio group can wrap a group of Radio

PropertyDescriptionTypeDefaultVersion
buttonStyleThe style type of radio buttonoutline | solidoutline
defaultValueDefault selected valueany-
disabledDisable all radio buttonsbooleanfalse
nameThe name property of all input[type="radio"] childrenstring-
optionsSet children optionalstring[] | number[] | Array<{ label: string value: string disabled?: boolean }>-
optionTypeSet Radio optionTypedefault | buttondefault4.4.0
sizeThe size of radio button stylelarge | middle | small-
valueUsed for setting the currently selected valueany-
onChangeThe callback function that is triggered when the state changesfunction(e:Event)-

Methods#

Radio#

NameDescription
blur()Remove focus
focus()Get focus