如何使用javascript解码URL中的空格参数？

Question

我尝试从URL中提取参数，但是一个参数的空格被替换为“+”，所以我提取的参数是“iphone + 4”，但实际上它是“iphone 4”，我该如何转换为第二种形式，decodeURIComponent在这里不起作用。

Answer 1

function decodeParameter(param) {
   return decodeURIComponent(param.replace(/\+/g, ' '));
}

Answer 2

"iPhone+4".replace("+"," ");  

应该这样做吗？

Answer 3

It is an ambiguous thing, because you don't really know whether the + means a space or an actual plus sign. If you are also responsible for creating the URLs, you can solve this by using an appropriate URL encoding function which will use %20 to encode spaces. If you are just collecting them from somewhere else, well, you are left with the option of assuming that every + means a space :).

You can replace all + s using this code:

your_text.replace(/\+/g," ");