<div>내용</div>

* {
   margin: 0;
   padding: 0;
}
div {
     padding: 20px;
     margin: 20px;
     background: #ff6600;
}

$(document).ready(function() {
    $("div").width(150).height(150);
    console.log("width " + $("div").width());
    console.log("height " + $("div").height());
    console.log("innerWidth " + $("div").innerWidth());
    console.log("innerHeight " + $("div").innerHeight());
    console.log("outerWidth " + $("div").outerWidth(true));
    console.log("outerHeight " + $("div").outerHeight(true));
});