JavaScript替换/，str.replace无法正常工作

Question

I'm having a really stupid issue where javascript is replacing every '/' with '%2F' in a url. Here is what i have now:

var url;
url = $(this).val();
url = str.replace('%2F', '/');
window.location.href = $(this).val();

What have I done wrong here?

Answer 1

You need to decode the url to convert the special characters back to what they should be (like changing %2F back to / ). To do this, you can use decodeURI :

url = $(this).val();
url = decodeURI(url);

However, sometimes spaces get replaced by + instead of %20 . So, to handle these cases, you must replace all + with %20 before decoding your url.

url = $(this).val();
url = url.replace('+', '%20');
url = decodeURI(url);

And now url is the decoded version of the url.