获取指定元素的总宽度，包括边距和填充

Question

Ok i have this code.

<script>
$(document).ready(function(){

    var totalWidth = 0;

    $('.thewidgets').each(function(index) {
        totalWidth += parseInt($(this).width(), 10);
    });

    $('#marginwidgets').css({width: totalWidth});

});
</script>

the html

<div id="marginwidgets">
 <div class="thewidgets">
  the widgets 1
 </div>
 <div class="thewidgets">
  the widgets 2
 </div>
 <div class="thewidgets">
  the widgets 3
 </div>
</div>

and the css

#marginwidgets
{
margin: 0px auto;
overflow: auto;
max-width: 100%;
}
.thewidgets
{
width: 284px
padding: 5px;
margin-left: 10px;
}
.thewidgets:first-child
{
margin-left: 0px !important;
}

As you can see in the script, the routine is to get the total width of .thewidgets and then apply the total width of that into the #marginwidgets that should make perfect centralized of #marginwidgets.

but i want the total width of .thewidgets include there margin and there paddings and then apply it into the #marginwidgets but i dont know how to make it, could someone here figure it out how to do it please?

Answer 1

Use outerWidth instead of width, and pass true as an argument to include the margins:

$(this).outerWidth(true);

Also the dimension functions return Numbers as opposed to strings so parseInt isnt necessary though you might want to use Math.floor , Math.ceil or Math.round .