Baseline Widely available
byteOffset
ã¢ã¯ã»ãµã¼ããããã£ã¯ããã®ãã¥ã¼ã® ArrayBuffer
ã¾ã㯠SharedArrayBuffer
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é ãããªãã»ããã表ãã¾ãã
// Create an ArrayBuffer with a size in bytes
const buffer = new ArrayBuffer(16);
const view = new DataView(buffer, 12, 4); // From byte 12 for the next 4 bytes
console.log(view.byteOffset);
// Expected output: 12
解説
byteOffset
ããããã£ã¯ãè¨å®ã¢ã¯ã»ãµã¼é¢æ°ã undefined
ã§ãããããªãã¡èªã¿åãã®ã¿ãã§ããã¢ã¯ã»ãµã¼ããããã£ã§ãããã®å¤ã¯ DataView
ãæ§ç¯ãããã¨ãã«ç¢ºç«ããã夿´ãããã¨ãã§ãã¾ããã
var buffer = new ArrayBuffer(8);
var dataview = new DataView(buffer);
dataview.byteOffset; // 0 (no offset specified)
var dataview2 = new DataView(buffer, 3);
dataview2.byteOffset; // 3 (as specified when constructing the DataView)
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