最简单的技术可能是使用Bootstrap navbar-static-bottom，并将主容器div设置为高度:100vh(新的CSS3视图端口百分比)。这将把页脚冲洗到底部。

<main class="container" style="height: 100vh;">
  some content
</main>      
<footer class="navbar navbar-default navbar-static-bottom">
  <div class="container">
  <p class="navbar-text navbar-left">&copy; Footer4U</p>
  </div>
</footer>

你可以使用jQuery来处理这个问题:

$(function() {
    /**
     * Read the size of the window and reposition the footer at the bottom.
     */
    var stickyFooter = function(){
        var pageHeight = $('html').height();
        var windowHeight = $(window).height();
        var footerHeight = $('footer').outerHeight();

        // A footer with 'fixed-bottom' has the CSS attribute "position: absolute",
        // and thus is outside of its container and counted in $('html').height().
        var totalHeight = $('footer').hasClass('fixed-bottom') ?
            pageHeight + footerHeight : pageHeight;

        // If the window is larger than the content, fix the footer at the bottom.
        if (windowHeight >= totalHeight) {
            return $('footer').addClass('fixed-bottom');
        } else {
            // If the page content is larger than the window, the footer must move.
            return $('footer').removeClass('fixed-bottom');
        }
    };

    // Call when this script is first loaded.
    window.onload = stickyFooter;

    // Call again when the window is resized.
    $(window).resize(function() {
        stickyFooter();
    });
});

下面是使用Flexbox的最新版本Bootstrap(在撰写本文时为4.3)的解决方案。

HTML:

<div class="wrapper">
  <div class="content">
    <p>Content goes here</p>
  </div>
</div>
<footer class="footer"></footer>

CSS:

html, body {
  height: 100%;
}

body {
  display: flex;
  flex-direction: column;
}

.wrapper {
  flex-grow: 1;
}

一个代码依赖的例子:https://codepen.io/tillytoby/pen/QPdomR

我找到了mix of navbar-inner和navbar-fixed-bottom

<div id="footer">
 <div class="navbar navbar-inner  navbar-fixed-bottom">
    <p class="muted credit"><center>ver 1.0.1</center></p>
 </div>
</div>

这看起来不错，而且对我很有效

参见小提琴中的例子

下面是一个使用css3的例子:

CSS:

html, body {
    height: 100%;
    margin: 0;
}
#wrap {
    padding: 10px;
    min-height: -webkit-calc(100% - 100px);     /* Chrome */
    min-height: -moz-calc(100% - 100px);     /* Firefox */
    min-height: calc(100% - 100px);     /* native */
}
.footer {
    position: relative;
    clear:both;
}

HTML:

<div id="wrap">
    <div class="container clear-top">
       body content....
    </div>
</div>
<footer class="footer">
    footer content....
</footer>

小提琴

它看起来像高度:100%的“链”被打破在div#main。试着增加高度:100%增加高度，这可能会让你更接近目标。