JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://ajax.microsoft.com/ajax/jquery.validate/1.7/jquery.validate.js"></script>
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.2/themes/ui-lightness/jquery-ui.css">
Click a floater to alert the offset left position.

<div class='floater'>floater</div>
<div class='floater'>floater</div>

<div class='floater'>floater</div>

<div class='floater'>floater</div>

<div class='floater'>floater</div>

CSS

.floater{ 
    float: left;
    padding: 20px;
}

JavaScript

$('.floater').click(function() {
    alert($(this).offset().left);
});