buf.writeUInt8(value[, offset])
value
<integer> 要写入buf
的数字。offset
<integer> 开始写入之前要跳过的字节数。 必须满足0 <= offset <= buf.length - 1
。 默认值:0
。- 返回: <integer>
offset
加上写入的字节数。
将 value
写入 buf
中指定的 offset
。
value
必须是有效的无符号 8 位整数。
当 value
不是无符号 8 位整数时,则行为未定义。
此函数也可在 writeUint8
别名下使用。
const buf = Buffer.allocUnsafe(4);
buf.writeUInt8(0x3, 0);
buf.writeUInt8(0x4, 1);
buf.writeUInt8(0x23, 2);
buf.writeUInt8(0x42, 3);
console.log(buf);
// 打印: <Buffer 03 04 23 42>
value
<integer> Number to be written tobuf
.offset
<integer> Number of bytes to skip before starting to write. Must satisfy0 <= offset <= buf.length - 1
. Default:0
.- Returns: <integer>
offset
plus the number of bytes written.
Writes value
to buf
at the specified offset
. value
must be a
valid unsigned 8-bit integer. Behavior is undefined when value
is anything
other than an unsigned 8-bit integer.
This function is also available under the writeUint8
alias.
const buf = Buffer.allocUnsafe(4);
buf.writeUInt8(0x3, 0);
buf.writeUInt8(0x4, 1);
buf.writeUInt8(0x23, 2);
buf.writeUInt8(0x42, 3);
console.log(buf);
// Prints: <Buffer 03 04 23 42>