CODEWITHSUNDEEP
javascriptjqueryhtmlcss
Andrés AG
Andrés AG

Reputation: 419

How to get descendant span element with jQuery?

I have the following HTML:

<a href="javascript:search_rate(this, 'key', 'upvote', 'url' );">
    <div>
        <span class="glyphicon glyphicon-thumbs-up"></span> <span class="rating">0</span>
    </div>
</a>

In the function search_rate, I would like to use the this variable that I passed to get the element with class="rating" and then update its value from 0 to 1. I am using jQuery and I wrote the following to try to get the element:

update_node = $(this).find('.rating');

However, for some reason update_node does not point to the correct DOM element. Just to clarify I am a beginner and have been struggling with how to use jQuery to navigate the DOM. Help is greatly appreciated, thanks!

Upvotes: 1

Views: 245

Answers (1)

jmore009
jmore009

Reputation: 12923

If you're going to use jQuery you don't need to pass a function through href. You don't need to use an a tag at all. Just target the div clicked and update its child .rating

HTML

<div class="upvote">
    <span class="glyphicon glyphicon-thumbs-up"></span> 
    <span class="rating">0</span>
</div>

JS

$(".upvote").click(function(){
   $(this).find(".rating").html("1");    
});

EXAMPLE 1

NOTE: if you're looking to do an upvote count system, I would pull the number on page load and add 1 to it on click:

//pull current number
var currentCount = $(".upvote .rating").text();

$(".upvote").click(function(){ 
  $(this).find(".rating").html(parseInt(currentCount)+1); 
});

EXAMPLE 2

UPDATE

To pass other values to the click event, just add them as data attributes:

<div class="upvote" data-one="hello" data-two="goodbye">

EXAMPLE 3

Upvotes: 1

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