Baseline Widely available
validationMessage
㯠HTMLTextAreaElement
ã¤ã³ã¿ã¼ãã§ã¤ã¹ã®èªã¿åãå°ç¨ããããã£ã§ããã® <textarea>
ã³ã³ããã¼ã«ãæºããã¦ããªãæ¤è¨¼å¶ç´ããè¨è¿°ãããã¼ã«ã©ã¤ãºãããã¡ãã»ã¼ã¸ã表ãæååãï¼ããããã°ï¼è¿ãã¾ãã ã³ã³ããã¼ã«ãå¶ç´æ¤è¨¼ã®å¯¾è±¡ã§ã¯ãªãå ´åï¼HTMLTextAreaElement.willValidate
ã false
ã®å ´åï¼ãã¾ãã¯å¶ç´ãæºããã¦ããå ´åã¯ã空æååãè¿ããã¾ãã
ããããã® <textarea>
è¦ç´ ãå¶ç´æ¤è¨¼ã®å¯¾è±¡ï¼willValidate
ã true
ï¼ã§ãããå¶ç´ãæºãããã¦ããªãå ´åï¼HTMLInputElement.validity
ãªãã¸ã§ã¯ãã® valid
ããããã£ã false
ï¼ãå¤ã¯æ¤è¨¼ä¸ã«ã¦ã¼ã¶ã¼ã«è¡¨ç¤ºãããã¨ã©ã¼ã¡ãã»ã¼ã¸ã¨ãªãã¾ãã
æååã§ãã
ä¾const textarea = document.getElementById("myTextArea");
const errorMessage = textarea.validationMessage;
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