buf.includes(value[, byteOffset][, encoding])

• value <string> | <Buffer> | <Uint8Array> | <integer> 要搜索的内容。

  ¥value <string> | <Buffer> | <Uint8Array> | <integer> What to search for.

• byteOffset <integer> 开始搜索 buf 的位置。如果为负数，则从 buf 的末尾开始计算偏移量。默认值：0。

  ¥byteOffset <integer> Where to begin searching in buf. If negative, then offset is calculated from the end of buf. Default: 0.

• encoding <string> 如果 value 是字符串，则这就是它的编码。默认值：'utf8'。

  ¥encoding <string> If value is a string, this is its encoding. Default: 'utf8'.

• 返回：<boolean> 如果在 buf 中找到 value，则为 true，否则为 false。

  ¥Returns: <boolean> true if value was found in buf, false otherwise.

相当于 buf.indexOf() !== -1。

¥Equivalent to buf.indexOf() !== -1.

import { Buffer } from 'node:buffer';

const buf = Buffer.from('this is a buffer');

console.log(buf.includes('this'));
// Prints: true
console.log(buf.includes('is'));
// Prints: true
console.log(buf.includes(Buffer.from('a buffer')));
// Prints: true
console.log(buf.includes(97));
// Prints: true (97 is the decimal ASCII value for 'a')
console.log(buf.includes(Buffer.from('a buffer example')));
// Prints: false
console.log(buf.includes(Buffer.from('a buffer example').slice(0, 8)));
// Prints: true
console.log(buf.includes('this', 4));
// Prints: falseconst { Buffer } = require('node:buffer');

const buf = Buffer.from('this is a buffer');

console.log(buf.includes('this'));
// Prints: true
console.log(buf.includes('is'));
// Prints: true
console.log(buf.includes(Buffer.from('a buffer')));
// Prints: true
console.log(buf.includes(97));
// Prints: true (97 is the decimal ASCII value for 'a')
console.log(buf.includes(Buffer.from('a buffer example')));
// Prints: false
console.log(buf.includes(Buffer.from('a buffer example').slice(0, 8)));
// Prints: true
console.log(buf.includes('this', 4));
// Prints: false拷贝