buf.readUInt32BE([offset])

• offset <integer> 开始读取之前要跳过的字节数。 必须满足 0 <= offset <= buf.length - 4。 默认值: 0。
• 返回: <integer>

从指定的 offset 处的 buf 读取无符号的大端序 32 位整数。

const buf = Buffer.from([0x12, 0x34, 0x56, 0x78]);

console.log(buf.readUInt32BE(0).toString(16));
// 打印: 12345678

• offset <integer> Number of bytes to skip before starting to read. Must satisfy 0 <= offset <= buf.length - 4. Default: 0.
• Returns: <integer>

Reads an unsigned, big-endian 32-bit integer from buf at the specified offset.

const buf = Buffer.from([0x12, 0x34, 0x56, 0x78]);

console.log(buf.readUInt32BE(0).toString(16));
// Prints: 12345678