js怎么压缩字符串

function compressString(str) {
  return str.replace(/\s+/g, '');
}

let myString = "  Hello   World!  \n This is a test. ";
let compressedString = compressString(myString);
console.log(compressedString); // 输出: HelloWorld!Thisisatest.

function rleEncode(str) {
  let encoded = "";
  let count = 1;

  for (let i = 0; i < str.length; i++) {
    if (i + 1 < str.length && str[i] === str[i + 1]) {
      count++;
    } else {
      encoded += str[i] + (count > 1 ? count : "");
      count = 1;
    }
  }
  return encoded;
}

let myString = "AAABBBCCDAA";
let encodedString = rleEncode(myString);
console.log(encodedString); // 输出: A3B3CDA2

lz-string

// 需要先安装 lz-string: npm install lz-string
const LZString = require('lz-string');

let myString = "This is a very long string that contains many repeated words. This is a test.";
let compressedString = LZString.compress(myString);
console.log(compressedString);

let decompressedString = LZString.decompress(compressedString);
console.log(decompressedString); // 输出: This is a very long string that contains many repeated words. This is a test.

lz-string

pako

// 需要先安装 pako: npm install pako
const pako = require('pako');

let myString = "This is a very long string that contains many repeated words. This is a test.";
let compressedString = pako.gzip(myString, { to: 'string' });
console.log(compressedString);

let decompressedString = pako.ungzip(compressedString, { to: 'string' });
console.log(decompressedString); // 输出: This is a very long string that contains many repeated words. This is a test.

lz-string

LZString.decompress()

pako

pako.ungzip()