HTMLElement: blur() ã¡ã½ãã

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HTMLElement.blur() ã¡ã½ããã¯ãç¾å¨ã®è¦ç´ ãããã¼ãã¼ããã©ã¼ã«ã¹ãåãé¤ãã¾ãã

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blur()

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HTML

html

<input type="text" id="sampleText" value="ãµã³ãã«ããã¹ã" /><br /><br />
<button type="button" onclick="focusInput()">
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</button>

JavaScript

function focusInput() {
  const textField = document.getElementById("sampleText");

  textField.focus();

  // å¥åæ¬ãã 3 ç§å¾ã«ãã©ã¼ã«ã¹ãå¤ãã
  setTimeout(() => {
    textField.blur();
  }, 3000);
}