Jquery 如何保持页脚在底部，即使动态高度的网站

当我有一个使用CSS动态设置高度（例如从数据库获取信息）的页面时，如何始终在窗口底部保留页脚div

---

如果您想使用jQuery，我提出了以下方法，效果很好：

设置页脚的CSS:

#footer { position:absolute; width:100%; height:100px; }

<script>
  x = $('#div-that-increase-height').height()+20; // +20 gives space between div and footer
  y = $(window).height();    
  if (x+100<=y){ // 100 is the height of your footer
    $('#footer').css('top', y-100+'px');// again 100 is the height of your footer
    $('#footer').css('display', 'block');
  }else{
    $('#footer').css('top', x+'px');
    $('#footer').css('display', 'block');
  }
</script>

body, html
{
    margin: 0px; padding: 0px;
}

#footer
{
    width: 100%;
    height: 30px;
    position: fixed;
    bottom: 0px;
    left: 0px;
    right: 0px;
    /*text-align, background-color, and other specific styles can be applied here. You can change the height from 30px to anything which suits your needs. You can even comment Left: 0px & Right: 0px, but to make sure that it works in all browsers, lets leave them there.*/
}

/*Place this div anywhere on the page, inside the form tags.*/
<div id="footer">
/*Your text/elements goes here*/
</div>

html {
    position: relative;
    min-height: 100%;
}
footer {
    display:none;
    position: absolute;
    left: 0;
    bottom: 0;
    height: auto;
    width: 100%;
}

function footerAlign() {
  $('footer').css('display', 'block');
  $('footer').css('height', 'auto');
  var footerHeight = $('footer').outerHeight();
  $('body').css('padding-bottom', footerHeight);
  $('footer').css('height', footerHeight);
}


$(document).ready(function(){
  footerAlign();
});

$( window ).resize(function() {
  footerAlign();
});

设置脚本：

#footer { position:absolute; width:100%; height:100px; }

<script>
  x = $('#div-that-increase-height').height()+20; // +20 gives space between div and footer
  y = $(window).height();    
  if (x+100<=y){ // 100 is the height of your footer
    $('#footer').css('top', y-100+'px');// again 100 is the height of your footer
    $('#footer').css('display', 'block');
  }else{
    $('#footer').css('top', x+'px');
    $('#footer').css('display', 'block');
  }
</script>

body, html
{
    margin: 0px; padding: 0px;
}

#footer
{
    width: 100%;
    height: 30px;
    position: fixed;
    bottom: 0px;
    left: 0px;
    right: 0px;
    /*text-align, background-color, and other specific styles can be applied here. You can change the height from 30px to anything which suits your needs. You can even comment Left: 0px & Right: 0px, but to make sure that it works in all browsers, lets leave them there.*/
}

/*Place this div anywhere on the page, inside the form tags.*/
<div id="footer">
/*Your text/elements goes here*/
</div>

html {
    position: relative;
    min-height: 100%;
}
footer {
    display:none;
    position: absolute;
    left: 0;
    bottom: 0;
    height: auto;
    width: 100%;
}

function footerAlign() {
  $('footer').css('display', 'block');
  $('footer').css('height', 'auto');
  var footerHeight = $('footer').outerHeight();
  $('body').css('padding-bottom', footerHeight);
  $('footer').css('height', footerHeight);
}


$(document).ready(function(){
  footerAlign();
});

$( window ).resize(function() {
  footerAlign();
});

x=$（'增加高度的div'）。高度（）+20；//+20给出div和footer之间的空间
y=$（窗口）.height（）；
如果（x+100我相信您正在寻找一个粘性页脚

试试这个：（存档）

从上述文章中：

layout.css:

#footer { position:absolute; width:100%; height:100px; }

<script>
  x = $('#div-that-increase-height').height()+20; // +20 gives space between div and footer
  y = $(window).height();    
  if (x+100<=y){ // 100 is the height of your footer
    $('#footer').css('top', y-100+'px');// again 100 is the height of your footer
    $('#footer').css('display', 'block');
  }else{
    $('#footer').css('top', x+'px');
    $('#footer').css('display', 'block');
  }
</script>

body, html
{
    margin: 0px; padding: 0px;
}

#footer
{
    width: 100%;
    height: 30px;
    position: fixed;
    bottom: 0px;
    left: 0px;
    right: 0px;
    /*text-align, background-color, and other specific styles can be applied here. You can change the height from 30px to anything which suits your needs. You can even comment Left: 0px & Right: 0px, but to make sure that it works in all browsers, lets leave them there.*/
}

/*Place this div anywhere on the page, inside the form tags.*/
<div id="footer">
/*Your text/elements goes here*/
</div>

html {
    position: relative;
    min-height: 100%;
}
footer {
    display:none;
    position: absolute;
    left: 0;
    bottom: 0;
    height: auto;
    width: 100%;
}

function footerAlign() {
  $('footer').css('display', 'block');
  $('footer').css('height', 'auto');
  var footerHeight = $('footer').outerHeight();
  $('body').css('padding-bottom', footerHeight);
  $('footer').css('height', footerHeight);
}


$(document).ready(function(){
  footerAlign();
});

$( window ).resize(function() {
  footerAlign();
});

html页面：

#footer { position:absolute; width:100%; height:100px; }

<script>
  x = $('#div-that-increase-height').height()+20; // +20 gives space between div and footer
  y = $(window).height();    
  if (x+100<=y){ // 100 is the height of your footer
    $('#footer').css('top', y-100+'px');// again 100 is the height of your footer
    $('#footer').css('display', 'block');
  }else{
    $('#footer').css('top', x+'px');
    $('#footer').css('display', 'block');
  }
</script>

body, html
{
    margin: 0px; padding: 0px;
}

#footer
{
    width: 100%;
    height: 30px;
    position: fixed;
    bottom: 0px;
    left: 0px;
    right: 0px;
    /*text-align, background-color, and other specific styles can be applied here. You can change the height from 30px to anything which suits your needs. You can even comment Left: 0px & Right: 0px, but to make sure that it works in all browsers, lets leave them there.*/
}

/*Place this div anywhere on the page, inside the form tags.*/
<div id="footer">
/*Your text/elements goes here*/
</div>

html {
    position: relative;
    min-height: 100%;
}
footer {
    display:none;
    position: absolute;
    left: 0;
    bottom: 0;
    height: auto;
    width: 100%;
}

function footerAlign() {
  $('footer').css('display', 'block');
  $('footer').css('height', 'auto');
  var footerHeight = $('footer').outerHeight();
  $('body').css('padding-bottom', footerHeight);
  $('footer').css('height', footerHeight);
}


$(document).ready(function(){
  footerAlign();
});

$( window ).resize(function() {
  footerAlign();
});


你的网站内容在这里

版权所有（c）2008

不确定这是否是您想要的：

<div style="position: fixed; bottom: 0px; left: 0px; right: 0px;">footer</div>

页脚
请参阅这两篇文章。以及

参见工作样本

使用以下方法在网页上创建固定页脚：

CSS:

#footer { position:absolute; width:100%; height:100px; }

<script>
  x = $('#div-that-increase-height').height()+20; // +20 gives space between div and footer
  y = $(window).height();    
  if (x+100<=y){ // 100 is the height of your footer
    $('#footer').css('top', y-100+'px');// again 100 is the height of your footer
    $('#footer').css('display', 'block');
  }else{
    $('#footer').css('top', x+'px');
    $('#footer').css('display', 'block');
  }
</script>

body, html
{
    margin: 0px; padding: 0px;
}

#footer
{
    width: 100%;
    height: 30px;
    position: fixed;
    bottom: 0px;
    left: 0px;
    right: 0px;
    /*text-align, background-color, and other specific styles can be applied here. You can change the height from 30px to anything which suits your needs. You can even comment Left: 0px & Right: 0px, but to make sure that it works in all browsers, lets leave them there.*/
}

/*Place this div anywhere on the page, inside the form tags.*/
<div id="footer">
/*Your text/elements goes here*/
</div>

html {
    position: relative;
    min-height: 100%;
}
footer {
    display:none;
    position: absolute;
    left: 0;
    bottom: 0;
    height: auto;
    width: 100%;
}

function footerAlign() {
  $('footer').css('display', 'block');
  $('footer').css('height', 'auto');
  var footerHeight = $('footer').outerHeight();
  $('body').css('padding-bottom', footerHeight);
  $('footer').css('height', footerHeight);
}


$(document).ready(function(){
  footerAlign();
});

$( window ).resize(function() {
  footerAlign();
});

HTML:

#footer { position:absolute; width:100%; height:100px; }

<script>
  x = $('#div-that-increase-height').height()+20; // +20 gives space between div and footer
  y = $(window).height();    
  if (x+100<=y){ // 100 is the height of your footer
    $('#footer').css('top', y-100+'px');// again 100 is the height of your footer
    $('#footer').css('display', 'block');
  }else{
    $('#footer').css('top', x+'px');
    $('#footer').css('display', 'block');
  }
</script>

body, html
{
    margin: 0px; padding: 0px;
}

#footer
{
    width: 100%;
    height: 30px;
    position: fixed;
    bottom: 0px;
    left: 0px;
    right: 0px;
    /*text-align, background-color, and other specific styles can be applied here. You can change the height from 30px to anything which suits your needs. You can even comment Left: 0px & Right: 0px, but to make sure that it works in all browsers, lets leave them there.*/
}

/*Place this div anywhere on the page, inside the form tags.*/
<div id="footer">
/*Your text/elements goes here*/
</div>

html {
    position: relative;
    min-height: 100%;
}
footer {
    display:none;
    position: absolute;
    left: 0;
    bottom: 0;
    height: auto;
    width: 100%;
}

function footerAlign() {
  $('footer').css('display', 'block');
  $('footer').css('height', 'auto');
  var footerHeight = $('footer').outerHeight();
  $('body').css('padding-bottom', footerHeight);
  $('footer').css('height', footerHeight);
}


$(document).ready(function(){
  footerAlign();
});

$( window ).resize(function() {
  footerAlign();
});

/*将此div放置在页面上任何位置的表单标记内*/
/*您的文本/元素位于此处*/

希望这有帮助

干杯

维诺
我认为这将解决您的所有问题：

    <script>

  $(document).ready(function() {

   var docHeight = $(window).height();
   var footerHeight = $('#footer').height();
   var footerTop = $('#footer').position().top + footerHeight;

   if (footerTop < docHeight) {
    $('#footer').css('margin-top', 10+ (docHeight - footerTop) + 'px');
   }
  });
 </script>


$（文档）.ready（函数（）{
var docHeight=$（window.height（）；
var footerHeight=$（'#footer'）.height（）；
var footerTop=$（'#footer'）.position（）.top+footerHeight；
如果（页脚顶部<八）{
$（'#footer'）.css（'margin-top'，10+（docHeight-footer）+'px'）；
}
});

您至少需要一个带有
#页脚的元素
如果不希望滚动条内容适合屏幕，只需将值10更改为0即可
如果内容不适合屏幕，滚动条将显示。
这是一个简单的解决方案

CSS:

JS:

if（$（“.Page”）.height（）我检查了这个问题以找到相同的答案。这是以前问过的问题，可能这是jQuery添加的新功能。但这是一个现在存在的简单修复：

如果使用jQuery，只需将data position=“fixed”添加到div标记



页脚-第3页

希望这有帮助。
我最喜欢的粘性页脚（非固定）jQuery/CSS解决方案是：

CSS:

#footer { position:absolute; width:100%; height:100px; }

<script>
  x = $('#div-that-increase-height').height()+20; // +20 gives space between div and footer
  y = $(window).height();    
  if (x+100<=y){ // 100 is the height of your footer
    $('#footer').css('top', y-100+'px');// again 100 is the height of your footer
    $('#footer').css('display', 'block');
  }else{
    $('#footer').css('top', x+'px');
    $('#footer').css('display', 'block');
  }
</script>

body, html
{
    margin: 0px; padding: 0px;
}

#footer
{
    width: 100%;
    height: 30px;
    position: fixed;
    bottom: 0px;
    left: 0px;
    right: 0px;
    /*text-align, background-color, and other specific styles can be applied here. You can change the height from 30px to anything which suits your needs. You can even comment Left: 0px & Right: 0px, but to make sure that it works in all browsers, lets leave them there.*/
}

/*Place this div anywhere on the page, inside the form tags.*/
<div id="footer">
/*Your text/elements goes here*/
</div>

html {
    position: relative;
    min-height: 100%;
}
footer {
    display:none;
    position: absolute;
    left: 0;
    bottom: 0;
    height: auto;
    width: 100%;
}

function footerAlign() {
  $('footer').css('display', 'block');
  $('footer').css('height', 'auto');
  var footerHeight = $('footer').outerHeight();
  $('body').css('padding-bottom', footerHeight);
  $('footer').css('height', footerHeight);
}


$(document).ready(function(){
  footerAlign();
});

$( window ).resize(function() {
  footerAlign();
});

jQuery:

#footer { position:absolute; width:100%; height:100px; }

<script>
  x = $('#div-that-increase-height').height()+20; // +20 gives space between div and footer
  y = $(window).height();    
  if (x+100<=y){ // 100 is the height of your footer
    $('#footer').css('top', y-100+'px');// again 100 is the height of your footer
    $('#footer').css('display', 'block');
  }else{
    $('#footer').css('top', x+'px');
    $('#footer').css('display', 'block');
  }
</script>

body, html
{
    margin: 0px; padding: 0px;
}

#footer
{
    width: 100%;
    height: 30px;
    position: fixed;
    bottom: 0px;
    left: 0px;
    right: 0px;
    /*text-align, background-color, and other specific styles can be applied here. You can change the height from 30px to anything which suits your needs. You can even comment Left: 0px & Right: 0px, but to make sure that it works in all browsers, lets leave them there.*/
}

/*Place this div anywhere on the page, inside the form tags.*/
<div id="footer">
/*Your text/elements goes here*/
</div>

html {
    position: relative;
    min-height: 100%;
}
footer {
    display:none;
    position: absolute;
    left: 0;
    bottom: 0;
    height: auto;
    width: 100%;
}

function footerAlign() {
  $('footer').css('display', 'block');
  $('footer').css('height', 'auto');
  var footerHeight = $('footer').outerHeight();
  $('body').css('padding-bottom', footerHeight);
  $('footer').css('height', footerHeight);
}


$(document).ready(function(){
  footerAlign();
});

$( window ).resize(function() {
  footerAlign();
});

演示：

注意：您的页脚必须以
开头，以
结尾才能按原样使用此代码，或者您可以修改代码以匹配页脚的id/类别。
页脚覆盖页面底部文本。：（如果将内容包装在标记中，并将页边距底部值设置为与页脚高度相同，则可以读取页脚最初覆盖的文本。到目前为止，我看到的最简单也是最好的解决方案。var docHeight=$（document）.height（）；将用于始终将页脚保持在我建议使用的页面内容下方$（“#footer”）.outerHeight（）；而不是.height（）对我来说是最好的解决方案！+1这太棒了，非常感谢你，我花了6个多小时的时间在一个CSS唯一的解决方案上-有时需要一点jQuery！非常适合于一个不固定但粘性的页脚！