How to change the focus on a Material UI input field

Question

How to change the focus on a Material UI input field

I am facing an issue with resetting/clearing an input field using a button click:

Take a look at the code here for reference.

 const searchInput = useRef(null);

  const clearInput = () => {
    searchInput.current.value = '';
    searchInput.current.blur();
  }

  return (
    <div>
      <Input
        inputRef={searchInput} 
        id="outlined-basic" 
        label="Outlined" 
        variant="outlined" />
      <button onClick={clearInput}>Clear</button>
    </div>
  );

After clearing the input, the issue is that the label does not reset to its original position. This seems to be happening because the input field still thinks it has focus. I have tried using blur(), but it doesn't seem to resolve the problem.

javascript material-ui

Answer 1

Answer №1

To capture the onBlur event, you can utilize inputProps.

    <Input
        id="outlined-basic" 
        label="Outlined" 
        variant="outlined"
        inputProps={{
            onBlur: () => {
                console.log('foo bar')
            }
        }}/>
      <button onClick={clearInput}>Clear</button>

Answer 2

To capture the onBlur event, you can utilize inputProps.

    <Input
        id="outlined-basic" 
        label="Outlined" 
        variant="outlined"
        inputProps={{
            onBlur: () => {
                console.log('foo bar')
            }
        }}/>
      <button onClick={clearInput}>Clear</button>

Answer 3

Answer №2

While not the most elegant of solutions, this is the code snippet I came up with to meet your requirements

import React, {useRef, useState, } from 'react';
import Input from '@mui/material/TextField';

export default function BasicTextFields() {
  const searchInput = useRef(null);
  const [isFocused, setFocus] = useState(false);

  const clearInput = () => {
    searchInput.current.value = '';
    searchInput.current.blur();
    setInputFocus(false)
  }

  const setInputFocus = (state)=>{
    const notEmpty = !!searchInput.current?.value;

    if(notEmpty) return setFocus(true)

    setFocus(state)
  }

  return (
    <div>
      <Input
        inputRef={searchInput} 
        id="outlined-basic" 
        label="Outlined" 
        InputLabelProps={{shrink: isFocused}}
        onFocus={()=>setInputFocus(true)}
        onBlur={()=>setInputFocus(false)}
        variant="outlined" />
      <button onClick={clearInput}>Clear</button>
    </div>
  );
}

https://codesandbox.io/s/basictextfields-material-demo-forked-jnsq0?fontsize=14&hidenavigation=1&module=%2Fdemo.js&theme=dark

Answer 4

While not the most elegant of solutions, this is the code snippet I came up with to meet your requirements

import React, {useRef, useState, } from 'react';
import Input from '@mui/material/TextField';

export default function BasicTextFields() {
  const searchInput = useRef(null);
  const [isFocused, setFocus] = useState(false);

  const clearInput = () => {
    searchInput.current.value = '';
    searchInput.current.blur();
    setInputFocus(false)
  }

  const setInputFocus = (state)=>{
    const notEmpty = !!searchInput.current?.value;

    if(notEmpty) return setFocus(true)

    setFocus(state)
  }

  return (
    <div>
      <Input
        inputRef={searchInput} 
        id="outlined-basic" 
        label="Outlined" 
        InputLabelProps={{shrink: isFocused}}
        onFocus={()=>setInputFocus(true)}
        onBlur={()=>setInputFocus(false)}
        variant="outlined" />
      <button onClick={clearInput}>Clear</button>
    </div>
  );
}

https://codesandbox.io/s/basictextfields-material-demo-forked-jnsq0?fontsize=14&hidenavigation=1&module=%2Fdemo.js&theme=dark

Answer 5

Answer №3

If you are looking to programmatically clear the TextField, then you can achieve this by using controlled mode and resetting the value state as needed. Check out the difference between uncontrolled and controlled components here:

export default function BasicTextFields() {
  const [value, setValue] = useState("");
  const clearInput = () => setValue("");

  return (
    <>
      <Input
        value={value}
        onChange={(e) => setValue(e.target.value)}
        label="Outlined"
        variant="outlined"
      />
      <button onClick={clearInput}>Clear</button>
    </>
  );
}

Live Demo

https://codesandbox.io/s/69286166-unfocus-blur-a-material-ui-input-nu9vl?file=/demo.js

Answer 6

If you are looking to programmatically clear the TextField, then you can achieve this by using controlled mode and resetting the value state as needed. Check out the difference between uncontrolled and controlled components here:

export default function BasicTextFields() {
  const [value, setValue] = useState("");
  const clearInput = () => setValue("");

  return (
    <>
      <Input
        value={value}
        onChange={(e) => setValue(e.target.value)}
        label="Outlined"
        variant="outlined"
      />
      <button onClick={clearInput}>Clear</button>
    </>
  );
}

Live Demo

https://codesandbox.io/s/69286166-unfocus-blur-a-material-ui-input-nu9vl?file=/demo.js

Answer 7

Answer №4

In order to implement an onBlur event handler for a TextField component, you simply need to utilize the onBlur property as shown below:

  <TextField
    onBlur={handleOnBlurMethod}
    ...other props
  />

Answer 8

In order to implement an onBlur event handler for a TextField component, you simply need to utilize the onBlur property as shown below:

  <TextField
    onBlur={handleOnBlurMethod}
    ...other props
  />

How to change the focus on a Material UI input field

Answer №1

Answer №2

Answer №3

Live Demo

Answer №4

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