学习笔记---编码解码

一、escape 和 unescape

返回一个字符的Unicode编码值

注意：除了ASCII字母、数字、标点符号"@ * _ + - . /"以外，对其他所有字符进行编码

console.log(escape("https://www.cnblogs.com/icebreaker/?client_id=admin&lang=en"))
// "https%3A//www.cnblogs.com/icebreaker/%3Fclient_id%3Dadmin%26lang%3Den"

console.log(unescape("https%3A//www.cnblogs.com/icebreaker/%3Fclient_id%3Dadmin%26lang%3Den"))
// "https://www.cnblogs.com/icebreaker/?client_id=admin&lang=en"

二、encodeURI() 和 decodeURI()

除了常见的符号以外，针对"; / ? : @ & = + $ , #"，也不进行编码。对应的解码函数是decodeURI()

注意：它不对单引号'编码

console.log(encodeURI('https://www.cnblogs.com/icebreaker/?client_id=admin&lang=en中文'))
// https://www.cnblogs.com/icebreaker/?client_id=admin&lang=en%E4%B8%AD%E6%96%87

console.log(decodeURI('https://www.cnblogs.com/icebreaker/?client_id=admin&lang=en%E4%B8%AD%E6%96%87'))
// https://www.cnblogs.com/icebreaker/?client_id=admin&lang=en中文

三、encodeURIComponent() 和 decodeURIComponent()

将除了语义字符之外的字符进行转义，包括元字符，因此，它的参数通常是URL的路径或参数值，而不是整个URL。对应的解码函数是decodeURIComponent()

console.log(encodeURIComponent("https://www.cnblogs.com/icebreaker/?client_id=admin&lang=en"))
// https%3A%2F%2Fwww.cnblogs.com%2Ficebreaker%2F%3Fclient_id%3Dadmin%26lang%3Den

console.log(decodeURIComponent("https%3A%2F%2Fwww.cnblogs.com%2Ficebreaker%2F%3Fclient_id%3Dadmin%26lang%3Den"))
// https://www.cnblogs.com/icebreaker/?client_id=admin&lang=en