左シフト代入演算子 (<<=
) は、指定された量のビットを左に移動し、結果を変数に代入します。
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構文
Operator: x <<= y Meaning: x = x << y
例
左シフト代入の使用
let a = 5;
// 00000000000000000000000000000101
bar <<= 2; // 20
// 00000000000000000000000000010100
仕様
ブラウザー実装状況
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The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.