Baseline Widely available
invalid
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ãã®ã¤ãã³ãã¯ãéä¿¡æã«ãã©ã¼ã ã®åé¡ã®æ¦è¦ã表示ããã®ã«ä¾¿å©ã§ãããã©ã¼ã ãéä¿¡ãããã¨ã invalid
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ã§ãã <form>
ãéä¿¡ããåãã¾ã㯠checkValidity()
ã¡ã½ããããã®è¦ç´ ã¾ãã¯ãã®ææè
ã§ãã <form>
ã«å¼ã³åºãããå¾ã«ãã§ãã¯ããã¾ãã
blur
ã§ã¯ãã§ãã¯ãè¡ããã¾ããã
ãã®ã¤ãã³ãåã addEventListener()
çã®ã¡ã½ããã§ä½¿ç¨ããããã¤ãã³ããã³ãã©ã¼ããããã£ãè¨å®ããããã¦ãã ããã
addEventListener("invalid", (event) => {});
oninvalid = (event) => {};
ã¤ãã³ãå
ä¸è¬ç㪠Event
ã§ãã
ãã©ã¼ã ãç¡å¹ãªå¤ã§éä¿¡ãããå ´åãéä¿¡å¯è½ãªè¦ç´ ããã§ãã¯ãããã¨ã©ã¼ãè¦ã¤ãã£ãå ´åãç¡å¹ãªè¦ç´ ã§ invalid
ã¤ãã³ããçºçãã¾ãããã®ä¾ã§ã¯ãå
¥åã«ç¡å¹ãªå¤ããã£ãããã« invalid
ã¤ãã³ããçºçããå ´åãç¡å¹ãªå¤ããã°ã«è¨é²ããã¾ãã
<form action="#">
<div>
<label>
1 ãã 10 ã¾ã§ã®æ´æ°ãå
¥åãã¦ãã ãã:
<input type="number" min="1" max="10" required />
</label>
</div>
<div><input type="submit" value="éä¿¡" /></div>
</form>
<hr />
Invalid values:
<ul id="log"></ul>
JavaScript
const input = document.querySelector("input");
const log = document.getElementById("log");
input.addEventListener("invalid", (e) => {
log.appendChild(
Object.assign(document.createElement("li"), {
textContent: JSON.stringify(e.target.value),
}),
);
});
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