问jQuery span类选择器

EN

$("span.characters-count").text(); 

$(".characters-count")[0].text();

 $(".characters-count")[0].innerText

console.log($(".characters-count:first").text())

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<span class="characters-count">&#40;160 Characters Left&#41;</span>

$(".characters-count:first").text()

//This will return dom element, so it doesn't have `text()` method, that's why it was throwing error for you.
    console.log($(".characters-count:first")[0]); 


// This will return object of an element, you can use jQuery selectors to get first element from collection and set text to it
     console.log($("span.characters-count"));
     console.log($("span.characters-count:first").text