Uncaught URIError: URI malformed

• url, pass the value, if the key has Chinese characters inside, the browser will be encoded off by default, so this page needs to be decoded first when calling the query interface), the above error occurs.
• Because the url contains the “%” character, the browser will give an error when it executes decodeURIComponent on “%”.

Repeat the problem

The browser url on the splice on (?q=%好的);

https://www.baidu.com/?q=%好的

Enter the code;

location.search
'?q=%%E5%A5%BD%E7%9A%84'
decodeURIComponent('%%E5%A5%BD%E7%9A%84');

Solution

urlStr.replace(/%/g, '%25');

Fundamentally solve the problem: encode the URL before uploading the value

encodeURIComponent('%好的');
'%25%E5%A5%BD%E7%9A%84'
https://www.baidu.com/?q=%25%E5%A5%BD%E7%9A%84