How to get the pagename from the URL without the extension through JQuery

问题

I have a URL:-

http://www.example.com/keyword/category.php

or

http://www.example.com/keyword/category.php#4

I need a magic abracadabra which gives me only the pagename as category from this URL.

Here is what I tried, and it gives category.php. But it has two problems. It is ugly and long and it gives me filename with an extension.

var currurl = window.location.pathname;
var index = currurl.lastIndexOf("/") + 1;
var filename = currurl.substr(index);

Thanks.

回答1:

Just make this into a function as below:

function getPageName(url) {
    var index = url.lastIndexOf("/") + 1;
    var filenameWithExtension = url.substr(index);
    var filename = filenameWithExtension.split(".")[0]; // <-- added this line
    return filename;                                    // <-- added this line
}

Then when you need to use it:

var url = "http://www.example.com/keyword/category.php";
var myFilename = getPageName(url);

All of the "ugliness" has been hidden in a function and the main code looks nice and clean!

回答2:

function getPageName() {
    var index = window.location.href.lastIndexOf("/") + 1,
        filenameWithExtension = window.location.href.substr(index),
        filename = filenameWithExtension.split(".")[0];  

    return filename;                                     
}

回答3:

For work with querystring like http://www.example.com/keyword/category.php?parametro=teste

function getPageName(url) {
     var index = url.lastIndexOf("/") + 1;
     var filenameWithExtension = url.substr(index);
     var filename = filenameWithExtension.split(".")[0]; 

     filename = filename.split("?")[0]; // <-- added this line

     return filename;                                  


}

回答4:

Note: If you do .split('.'), you will miss the base names of many URLs.

---

You can find the last forward slash and search ahead for the first ., ?, & or # to catch variations of URLs. This is probably the equivalent of PHP's basename

function getBaseName(url) {
  if(!url || (url && url.length === 0)) {
    return "";
  }
  var index = url.lastIndexOf("/") + 1;
  var filenameWithExtension = url.substr(index);
  var basename = filenameWithExtension.split(/[.?&#]+/)[0];

  // Handle '/mypage/' type paths
  if(basename.length === 0) {
    url = url.substr(0,index-1);
    basename = getBaseName(url);
  }
  return basename ? basename : ""; 
}

and use it like so

var url = "http://www.example.com/keyword/category.php#4";
var file = getBaseName(url);

Results:

http://www.example.com/keyword/category.php#4    =>  "category"
http://www.example.com/keyword/category          =>  "category"  
http://www.example.com/keyword/category/         =>  "category"  
http://www.example.com/keyword/category?ver=1    =>  "category"  
http://www.example.com/keyword/category/?ver=1   =>  "category"
http://www.example.com/keyword/category#elem     =>  "category"

JSBin demo

来源：https://stackoverflow.com/questions/16286384/how-to-get-the-pagename-from-the-url-without-the-extension-through-jquery