jQuery使用attr（）获取href无效

Question

I have a page* with several .article divs with the following markup:

<div class="article">
  <div class="featured-img">
    <a href="https://www.johornow.com/english/things-to-do-at-kota-tinggi/" style="background: none;">
    </a>
  </div>
  <div class="featured-info">
    <h3 class="article-title">
      <a href="https://www.johornow.com/english/things-to-do-at-kota-tinggi/">Fun Things to Do and Amazing Places to Visit at Kota Tinggi</a>
    </h3>
  </div>
</div>

Now I want to get all the anchor links:

$('.article').each( e => $(this).find('article-title').find('a').attr("href") )

Surprisingly I failed to do so, I got DOM node. What's wrong with my code?!

* https://www.johornow.com/english/travel/

Answer 1

There are couple of errors in your code:

1) JQuery is all about chaining, that's why functions like each return the initial set and not the elements you return in the function (or a collection of your return values?). What you want/need here is .map .

2) your find was missing the . for addressing a class. Also, you can write it in a single statement find(".article-title a") .

3) Fat arrow functions don't establish their own context, thus $(this) won't work. Instead you have to use the "old-school" way of writing functions, to actually have this refer to the single elements.

The following jquery solution

$('.article .article-title a').map( function(){return console.log($(this).attr("href"))} )

creates an array with all the link hrefs.

So does the following vanilla JS (which I actually always prefer):

[].map.call(document.querySelectorAll('.article .article-title a'), e=>e.href )

There you have your fancy fat arrow again - also, it's shorter, (possibly faster) and does not rely on third-party;)

Answer 2

You can get all the links in an array

var m =[];
$('.article').each(function(e,v){
m.push($(this).find('h3 > a').attr("href"))
})
console.log(m)