Question

I am trying to calculate the width and difference between the widths of a div and the text in a page where the same div class appears multiple times.

The HTML:

<div class="post_content">
       <div class="container">
          <div class="title-holder">
          <h2><a href="link.html" class="widget-title">Crossword Book</a></h2>
          </div>
       </div>

      <div class="container">
         <div class="title-holder">
         <h2><a href="link.html" class="widget-title">Crossword Bookstore Ltd. &ndash; Elgin Road</a></h2>
         </div>
      </div>
</div>

The CSS:

div.container{
  width: 130px;
}
div.title-holder {
  width: 130px;
  height:20px;
  text-align:center;
  background: silver;
  overflow:hidden;
  position: relative;
}
div.title-holder a {  
  position: relative;  
  white-space:nowrap;  
  left: 0px;
}
div.image{
  background: brown;
  width: 100%;
  height: 100px;
}

The following script outputs the result of the first div correctly and then repeats the same result. It is not going to the next div and giving the next result.

$("div.title-holder").each(function(){    
  var m = $(this).width();
  var n = $("div.title-holder h2 a.widget-title").width();
  var o = m - n;

  alert ("title: " + m + " text: " + n + " diff: " + o);    

}); 

The output is

First Alert: title: 130 text: 108 diff: 22
Second Alert: title: 130 text: 108 diff: 22

What I am looking to achieve is

First Alert: title: 130 text: 108 diff: 22
Second Alert: title: 130 text: 258 diff: -128

Answer 1

The value of:

var n = $("div.title-holder h2 a.widget-title").width();

Will always be the same (the first result of that selector query). You need to do:

var n = $(this).find("a.widget-title").width();

or more specific:

var n = $("div.title-holder").children("h2").children("a.widget-title").width();