将变量传递给jQuery CSS值来​​计算高度

我显然需要将此DIV“两个”高度设置为100％ – （减去）另一个DIV高度（div“one”）。 问题是，另一个DIV（div“one”）的高度已经是动态的。

所以：

 
 
  div { position: relative; } body { height: 100vh; } 

我尝试过这样的东西，但这不起作用：

 $(document).ready(exe); $(window).resize(exe); function exe(){ var topHeight = $('#one').outerHeight(true); $('#two').css("height", "calc(100% - topHeight)") } 

要么

 $(document).ready(exe); $(window).resize(exe); function exe(){ var topHeight = $('#one').outerHeight(true); var topHeightCalc = '100%' - topHeight; $('#two').css("height", topHeightCalc) } 

Answer 1

嘿朋友你也可以在不使用calc（）函数的情况下实现你想要的。

这将获得窗口的高度并从中扣除div #one高度，并将该高度应用于div #two 。

 $(document).ready(exe); $(window).resize(exe); function exe(){ var topHeight = $('#one').outerHeight(true); var vhHeight = $(window).outerHeight(true); $('#two').css("height", vhHeight - topHeight + "px"); } 

Answer 2

您需要将CSS值中的字符串连接更正为"calc(100% - "+ topHeight +"px)"

 $(document).ready(exe); $(window).resize(exe); function exe(){ var topHeight = $('#one').outerHeight(true); $('#two').css("height", "calc(100% - "+ topHeight +"px)") } 

 div { position: relative; } body { height: 100vh; margin:0} #one {background:#eee} #two {background:#666} 

   
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Answer 3

如果浏览器兼容性不是问题，更奢侈的方法是使用display：table 。 这样您就可以在不使用任何JS的情况下实现所需的效果。

 body { height: 100vh; } .container__table { display: table; height: 100%; width: 100%; } .container__tr { display: table-row; } .container__td { display: table-cell; vertical-align: top; width: 100%; } .container__td#one { height: 1%; } /* Unnecessary style */ body { margin: 0; } p { font-family: sans-serif; line-height: 1.25; } .container__td { padding: 15px; } #one { background-color: #bababa; } #two { background-color: #cdcdcd; } 

  
 
 
 
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