不要使用 React-Select 清除选择上的输入

Question

There wasn't a good answer to this question so I'll answer it:

The problem is if you want to use the React-Select and you want persistent input value that doesn't get cleared on select or blur. This is not currently supported within the component, so a work-around is necessary.

I also answered this on one of the several issues raised on this topic https://github.com/JedWatson/react-select/issues/588
https://github.com/JedWatson/react-select/issues/3210

Answer 1

you can also augment this with this to get desired effects

const App = () => {
  const [input, setInput] = useState("");
  const [inputSave, setSave] = useState("");
  
  return (
    <Select
      placeholder={inputSave} // when blurred & value == "" this shows
      value="" // always show placeholder
      inputValue={input} // allows you continue where you left off
      onInputChange={setInput} // allows for actually typing
      onMenuClose={() => setSave(input)} // before the input is cleared, save it
      onFocus={() => {
        setInput(inputSave);
        setSave(""); // prevents undesired placeholder value
      }} 
      blurInputOnSelect  // actually allows for ^^ to work
    />
  )
}

Answer 2

The best way to go about this would be manually setting the input value (handling the onInputChange() event) only when the user is actually typing .

In other words, we need to disable ReactSelect's default behavior of clearing the input value on focus loss, menu close, and value select.

Example:

export default function App() {
  const [input, setInput] = useState("");

  const options = [
    { label: "first option", value: 1 },
    { label: "second option", value: 2 },
    { label: "third option", value: 3 }
  ];

  return (
    <Select
      options={options}
      inputValue={input}
      onInputChange={(value, action) => {
        // only set the input when the action that caused the
        // change equals to "input-change" and ignore the other
        // ones like: "set-value", "input-blur", and "menu-close"
        if (action.action === "input-change") setInput(value); // <---
      }}
    />
  );
}