Version: v4.10.0

use-interval

About#

setInterval hook for React.

Installation#

npm install --save @rooks/use-interval

Importing the hook#

import useInterval from "@rooks/use-interval"

Usage#

function reducer(state, action) {
  switch (action.type) {
    case "increment":
      return { count: state.count + 1 };
    default:
      return state;
  }
}

function Demo() {
  const [value, dispatcher] = useReducer(reducer, { count: 0 });

  function increment() {
    dispatcher({
      type: "increment"
    });
  }

  const { start, stop } = useInterval(() => {
    increment();
  }, 1000);

  return (
    <>
      <p>value is {value.count}</p>
      <button onClick={start}>Start</button>
      <button onClick={stop}>Stop</button>
    </>
  );
}
render(<Demo/>)

Arguments#

Argument	Type	Description	Default value
callback	function	Function be invoked after each interval duration	undefined
intervalDuration	number	Duration in milliseconds after which callback is invoked	undefined
startImmediate	boolean	Should the timer start immediately or no	false

Returned Object#

Returned object attributes	Type	Description
start	function	Start the interval
stop	function	Stop the interval
intervalId	intervalId	IntervalId of the interval

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