如何在jQuery中将URL与href匹配？

Question

Using a list for navigation, I am looking for a clean way to apply the 'selected' class to a list item if the page URL (minus anything after the path) matches the href of the list item (minus anything after the path).

Example:

<li><a href="/p/clothing/dresses/N-10635?ab=leftNav:dresses">dresses</a></li>

Apply class "selected" to the list item when the page URL includes the /p/clothing/dresses/N-10635 part of the href.

So far, I achieved partial results using:

$('.leftNav li a').each(function(){
    if(window.location.href == this.href){
        $(this).parents('li').addClass('selected');
    }
});

<ul class="leftNav">
<li><a href="/p/clothing/dresses/N-10635?ab=leftNav:dresses">dresses</a></li>
<li><a href="/p/clothing/bottoms/capris/N-10764?ab=leftNav:capris">capris</a></li>
</ul>

This, however, only applied the 'selected' class when the URL matched the href exactly - meaning it had to include the link-tracking variable as in the href (ie: ?ab=leftNav:dresses ). Thinking of ways to match the "base" URL's and href's, I tried adding a data attribute to the list items to match the path only:

$('.leftNav li').each(function(){
    if(window.location.href == (this).data('left-nav-href')){
        $(this).addClass('selected');
    }
});

<ul class="leftNav">
<li data-left-nav-href="/p/clothing/dresses/N-10635"><a href="/p/clothing/dresses/N-10635?ab=leftNav:dresses">dresses</a></li>
<li data-left-nav-href="/p/clothing/bottoms/capris/N-10764"><a href="/p/clothing/bottoms/capris/N-10764?ab=leftNav:capris">capris</a></li>
</ul>

I attempted this with variations of window.location including: window.location.href , window.location.href.pathname , window.location.href.indexOf , window.location.href.startsWith . With this not working, I searched for a way to match the path of the URL and href regardless of additional parameters or variables, but all I can find are ways to match URL's and href's specifically with strings or parameters. All instances I could find of matching only part of a URL or href use "split" RegEx which introduces another level of complexity that I don't think my use requires. Am I missing a simpler solution?

Answer 1

you can use indexOf()

$(document).ready(function () {
    $('.leftNav li a').each(function(){
        var ThisHref = ($(this).attr('href').split('?'))[0];
        if(window.location.href.indexOf(ThisHref) > -1) {
            $(this).closest('li').addClass('selected');
        }
   });
});

Example

 var url = "http://www.website.com/index/p/clothing/bottoms/capris/N-10764?ab=leftNav:capris"; $(document).ready(function () { $('.leftNav li a').each(function(){ var ThisHref = ($(this).attr('href').split('?'))[0]; //alert(ThisHref); if(url.indexOf(ThisHref) > -1) { $(this).closest('li').addClass('selected'); } }); }); 

 .selected{ background : red; } 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <ul class="leftNav"> <li><a href="/p/clothing/dresses/N-10635?ab=leftNav:dresses">dresses</a></li> <li><a href="/p/clothing/bottoms/capris/N-10764?ab=leftNav:capris">capris</a></li> </ul> 

Explanation :

$(document).ready(function () {  // run the code after document is ready
    $('.leftNav li a').each(function(){ // loop through <a> on <li>
       // $(this).attr('href') will return href as string .. in your case will return something like '/p/clothing/dresses/N-10635?ab=leftNav:dresses'
       // using .split('?') to separating this href string by '?'
       // [0] get the first string after split (in this case it will be '/p/clothing/dresses/N-10635')
       // combine all of those steps on just one line
       var ThisHref = ($(this).attr('href').split('?'))[0];
       // get the 'window.location.href' which is return your url ..something like 'http://www.website.com/index/p/clothing/bottoms/capris/N-10764?ab=leftNav:capris'
       // try to find (first string after split) into (url/window.location.href)
       if(window.location.href.indexOf(ThisHref) > -1) { // if the url contains the first string after split addClass
          $(this).closest('li').addClass('selected'); 
       }
    });
}); 

you can read about .split() here

Note: in Vinas answer he use this.href which will return href as string .. in your case will return something like '/p/clothing/dresses/N-10635?ab=leftNav:dresses' and he use location.pathname and the code of indexOf() he try to find the location.pathname into the href

Additional : in your case both my answer and Vinas answer will work . that's not depending on code its depending on your case and what you're trying to do .. something like .hide(0) , .slideUp(0) , fadeOut(0) all of those hide the element with same effect .. So the code always determine by the case you working with .. May be my code or even Vinas's code won't work on another case

Answer 2

I guess if you keep your html like

<li><a href="/p/clothing/dresses/N-10635?ab=leftNav:dresses">dresses</a></li>

but change the comparisson to:

$('.leftNav li a').each(function(){
    if (this.href.indexOf(location.pathname) > -1) {
        $(this).parents('li').addClass('selected');
    }
});

you'll get what you need!

The "if" above will check if the given path is contained in item's href property.

So, if your URL is " http://www.yourhost.com/p/clothing/dresses/N-10635?param=value ", it's path (/p/clothing/dresses/N-10635) should be found, and the output for the given example would be:

<li class="selected"><a href="/p/clothing/dresses/N-10635?ab=leftNav:dresses">dresses</a></li>

I hope this helped! =)

Answer 3

Assuming there isn't any '?' character in the actual path you could use something like this for both the location and the href:

function getBaseURL(url) {
    return url.split('?')[0];
}