The content of this article is about the code implementation of gzip decompression in js. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.
The code is as follows:
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdn.bootcss.com/pako/1.0.6/pako.min.js"></script>
</head>
<body>
<input id="content" type="text">
<button onclick="encode()">encode</button>
<button onclick="decode()">decode</button>
<div id="ciphertext"></div>
</body>
</html>
<script type="text/javascript">
function encode(){
var str = $('#content').val();
str = window.btoa(pako.gzip(str, {to: "string"}))
$('#ciphertext').text(str);
}
function decode(){
var encodedData = $('#content').val();
var decodedData = window.atob(encodedData);
var charData = decodedData.split('').map(function(x){return x.charCodeAt(0);});
var binData = new Uint8Array(charData);
var data = pako.inflate(binData);
decodedData = String.fromCharCode.apply(null, new Uint16Array(data));
$('#ciphertext').text(decodedData);
}
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