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input composition event All In One

input event

compositionStart & compositionEnd & compositionUpdate

Composition Event

https://developer.mozilla.org/en-US/docs/Web/API/CompositionEvent

const inputElement = document.querySelector('input[type="text"]');
const log = document.querySelector('.event-log-contents');
const clearLog = document.querySelector('.clear-log');

clearLog.addEventListener('click', () => {
    log.textContent = '';
});

function handleEvent(event) {
    log.textContent = log.textContent + `${event.type}: ${event.data}
`;
}

inputElement.addEventListener('compositionstart', handleEvent);
inputElement.addEventListener('compositionupdate', handleEvent);
inputElement.addEventListener('compositionend', handleEvent);

https://developer.mozilla.org/en-US/docs/Web/API/Element/compositionstart_event
https://developer.mozilla.org/en-US/docs/Web/API/Element/compositionupdate_event
https://developer.mozilla.org/en-US/docs/Web/API/Element/compositionend_event

https://developer.mozilla.org/en-US/docs/Glossary/input_method_editor

const inputElement = document.querySelector('input[type="text"]');

inputElement.addEventListener('compositionstart', (event) => {
  console.log(`generated characters were: ${event.data}`);
});

const inputElement = document.querySelector('input[type="text"]');

inputElement.addEventListener('compositionupdate', (event) => {
  console.log(`generated characters were: ${event.data}`);
});

const inputElement = document.querySelector('input[type="text"]');

inputElement.addEventListener('compositionend', (event) => {
  console.log(`generated characters were: ${event.data}`);
});

UI Events

Composition Events

https://w3c.github.io/uievents/#events-compositionevents

https://w3c.github.io/uievents/#event-type-compositionend

refs

合成事件

组合事件提供了一种通过键盘事件以补充或替代方式输入文本的方法，以便允许使用键盘上通常不可用的字符。

https://stackoverflow.com/questions/51226598/what-is-javascripts-compositionevent-please-give-examples

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