Native js encryption and decryption use atob and btoa methods.
1. btoa encoding
window.btoa(stringToEncode)
2.atob decoding
window.atob(encodedData);
(1) btoab refers to ordinary characters, a refers to Base64 characters, therefore, btoa means ordinary characters toBase64 characters, that is, Base64 encoding.
(2) atoba refers to Base64, and b refers to ordinary characters. Therefore, atob means Base64 characters to ordinary characters, that is, Base64 decoding.
for example:
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
</head>
<body>
<script>
var s="abc121321dsadsa";
console.log(window.btoa(s));//YWJjMTIxMzIxZHNhZHNh
console.log(window.atob('YWJjMTIxMzIxZHNhZHNh'));
var str="我是中文";
console.log(window.escape(str));//%u6211%u662F%u4E2D%u6587
console.log(window.unescape('%u6211%u662F%u4E2D%u6587'));
var mm="123abc我是中文";
console.log(window.encodeURIComponent(mm));//123abc%E6%88%91%E6%98%AF%E4%B8%AD%E6%96%87
console.log(window.decodeURIComponent('123abc%E6%88%91%E6%98%AF%E4%B8%AD%E6%96%87'));
var a={
name:"张三你",
age:20
}
console.log(btoa(a));//W29iamVjdCBPYmplY3Rd
console.log(atob('W29iamVjdCBPYmplY3Rd'));
console.log(escape(a));
console.log(unescape("%5Bobject%20Object%5D"));
console.log(encodeURIComponent(JSON.stringify(a)));
console.log(decodeURIComponent('%7B%22name%22%3A%22%E5%BC%A0%E4%B8%89%E4%BD%A0%22%2C%22age%22%3A20%7D'));
</script>
</body>
</html>