javascript - 未计算 div 的外部高度

Question

我正在尝试计算 div 内容的外部高度，以便它会扩展粘性容器，从而产生图像跟随用户的错觉。由于某种原因，使用 outerHeight 将不起作用。我知道我可以单独添加 PX 值，但这对我来说并不清晰。

Codepen

JS

$(".sticky-container").css({'height':($(".content").outerHeight(false)+'px')});

HTML

<div class="filler">Scroll down</div>
<div class="sticky-container">
  <div class="content">Bacon ipsum dolor amet shankle pancetta bacon beef ribs shank strip steak beef andouille brisket ground round drumstick frankfurter. Beef rump brisket kevin ground round strip steak picanha pancetta andouille pig. Landjaeger pork meatball, turducken
    leberkas ribeye sausage frankfurter porchetta tongue fatback filet mignon pork belly beef ribs andou leberkas ribeye sausage frankfurter porchetta tongue fatback filet mignon pork belly beef ribs andouille. Biltong fatback swine pancetta salami hamburger,
    meatloaf short ribs strip steak capicola flank andouille. Tongue pastrami prosciutto capicola. leberkas ribeye sausage frankfurter porchetta tongue fatback filet mignon pork belly beef ribs andouille. Biltong fatback swine pancetta salami hamburger,
    meatloaf short ribs strip steak capicola flank andouille. Tongue pastrami prosciutto capicola. leberkas ribeye sausage frankfurter porchetta tongue fatback filet mignon pork belly beef ribs andouille. Biltong fatback swine pancetta salami hamburger,
    meatloaf short ribs strip stea leberkas ribeye sausage frankfurter porchetta tongue fatback filet mignon pork belly beef ribs andouille. Biltong fatback swine pancetta salami hamburger, meatloaf short ribs strip steak capicola flank andouille. Tongue
    pastrami prosciutto capicola. leberkas ribeye sausage frankfurter porchetta tongue fatback filet mignon pork belly beef ribs andouille. Biltong fatback swine pancetta salami hamburger, meatloaf short ribs strip steak capicola flank andouille. Tongue
    pastrami prosciutto capicola. leberkas ribeye sausage frankfurter porchetta tongue fatback filet mignon pork belly beef ribs ando leberkas ribeye sausage frankfurter porchetta tongue fatback filet mignon pork belly beef ribs andouille. Biltong fatback
    swine pancetta salami hamburger, meatloaf short ribs strip steak capicola flank andouille. Tongue pastrami prosciutto capicola.uille. Biltong fatback swine pancetta salami hamburger, meatloaf short ribs strip steak capicola flank andouille. Tongue
    pastrami prosciutto capicola.k capicola flank andouille. Tongue pastrami prosciutto capicola.ille. Biltong fatback swine pancetta salami hamburger, meatloaf short ribs strip steak capicola flank andouille. Tongue pastrami prosciutto capicola. Chuck
    venison ball tip boudin capicola t-bone ham hock sirloin pork. Meatloaf t-bone pancetta cupim cow shankle drumstick pork chop corned beef strip steak. Pork chop beef tenderloin kielbasa. Beef ribs beef cow ham hock biltong alcatra kevin picanha fatback
    pig brisket ground round boudin porchetta rump. Ham hock drumstick andouille filet mignon prosciutto porchetta shoulder kielbasa sirloin, shank swine. Cow biltong jowl, short loin turkey frankfurter flank tri-tip pancetta tenderloin. Rump ground round
    sirloin, fatback drumstick salami prosciutto picanha. Sausage brisket porchetta, ham pancetta turducken pork chop. Short loin porchetta strip steak, frankfurter landjaeger bresaola hamburger sirloin.
  </div>
  <div class="sticky-stuff"></div>
</div>

<div class="filler"></div>

html

html,body{
  height: 100%;
  margin: 0px;
  padding: 0px;
}


.filler{
  height:100%;
  background: green; 
  width: 100%;
}

.sticky-container{
   position: relative;
  height:100%;
  width:100%;
}

.content{
  width: 400px;
  position: absolute;
  top: 0;
  left: 0;
  z-index:1;
  background:white;
  margin: 50px;
}

.sticky-stuff{
  background: url(http://i.imgur.com/yT65RYM.jpg) no-repeat center center fixed; 
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
}

Answer 1

您没有包括内部 div 的边距。只需将 false 更改为 true。

$(".sticky-container").css({'height':($(".content").outerHeight(true))});