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URIError() コンストラクター - JavaScript | MDN
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URIError() コンストラクター
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2015年7月.
URIError
コンストラクターは、グローバルの URI 操作関数が間違った方法で使用された場合のエラーを生成します。
構文
new URIError([message[, fileName[, lineNumber]]])
引数
message
省略可-
人間が読むためのエラーの説明です。
fileName
省略可-
例外が発生したコードを含むファイルの名前です。
lineNumber
省略可-
例外が発生したコードの行番号です。
例
>URIError の捕捉
js
try {
decodeURIComponent("%");
} catch (e) {
console.log(e instanceof URIError); // true
console.log(e.message); // "malformed URI sequence"
console.log(e.name); // "URIError"
console.log(e.fileName); // "Scratchpad/1"
console.log(e.lineNumber); // 2
console.log(e.columnNumber); // 2
console.log(e.stack); // "@Scratchpad/2:2:3\n"
}
URIError の生成
js
try {
throw new URIError("Hello", "someFile.js", 10);
} catch (e) {
console.log(e instanceof URIError); // true
console.log(e.message); // "Hello"
console.log(e.name); // "URIError"
console.log(e.fileName); // "someFile.js"
console.log(e.lineNumber); // 10
console.log(e.columnNumber); // 0
console.log(e.stack); // "@Scratchpad/2:2:9\n"
}
仕様書
Specification |
---|
ECMAScript® 2026 Language Specification> # sec-nativeerror-constructors> |
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