我如何让我的手风琴打开 & glyphicon 在点击时旋转并在重新点击时反转

how do i get my accordion to open & glyphicon to rotate on click and do reverse on reclick

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</html>

还有为什么侧边栏应该是 250px 却变成了 100%

CSS

@import url("http://fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,600italic,300,400,600,700");

*
{
margin: 0;
padding: 0;
box-sizing: border-box;
}

body
{
font-family: 'Open Sans';
color: #ddd;
background-color: #2c3e50;
}

a, a:focus, a:hover, a:active
{
text-decoration: none;
outline: 0;
}

ul
{
 list-style: none;
} 

div#header
{
width: 100%;
height: 50px;
background-color: #2c3e50;
margin: 0 auto;
}

.logo
{
float: left;
margin-top: 10px;
margin-left: 16px;
}

.logo a
{
font-size: 1.3em;
color: #fff;
}

.logo a span
{
font-weight: 300;
}

div#container
{
width: 100%;
margin: 0 auto;
}

span.glyphicon
{
font-size: 16px;
color: #fff;
}

div#sidebar
{
width: 250px;
height: auto;
background-color: #2c3e50;
float: left;
}

ul.accordion li a
{
color: #ccc;
display: block;
padding: 8px;
}

.accordion li > .sub-menu
{
display: none;
}

.accordion li:target > .sub-menu
{
display: block;
}

.sub-menu
{
padding-left: 10px;
}

.sub-menu li a
{
color: #000;
}

div#content
{
width: auto;
margin-left: 250px;
height: 100%;
background-color: #95a5a6;
padding: 16px;
}

.content p
{
color: #424242;
font-size: 0.8em;
}


div#box
{
margin-top: 16px;
}

div#box .box-top
{
color: #fff;
background-color: #2c3e50;
padding: 5px;
padding-left: 16px;
}

div#box .box-panel
{
padding: 16px;
background-color: #fff;
}

a.mobile
{
display: block;
color: #fff;
background-color: #000;
text-align: center;
padding: 7px;
}

a.mobile:active
{
background-color: #4a4a4a;
}

@media only screen and (max-width: 320px)
{

.sidebar {
    width: 100%;
    display: none;
}

.content {
    margin-left: 0px;
}

}

@media only screen and (min-width: 320px)
{

a.mobile {
    display: none;      
}

.sidebar {
    height: 100%;
    display: block;
}

}

JAVASCRIPT

$(document).ready(function () {
$('.glyphicon').click(function () {
    $(this).toggleClass("glyphicon-chevron-down").toggleClass("glyphicon-chevron-right");
});
});

JAVASCRIPT二

$(document).ready(function() {

    var accordion_head = $('.accordion > li > a'),
        accordion_body = $('.accordion li > .sub-menu');

    /* accordion_head.first().addClass('active').next().slideDown('normal'); */

    accordion_head.on('click', function(event) {

        event.preventDefault();

        if ($(this).attr('class') != 'active'){
            accordion_body.slideUp('normal');
            $(this).next().stop(true,true).slideToggle('normal');
            accordion_head.removeClass('active');
            $(this).addClass('active');
        } else {
            accordion_body.slideUp('normal');
            accordion_head.removeClass('active');
        }

    });

});

此外,当我单击字形图标时,它会被另一个字形图标替换,反之亦然,手风琴效果很好,但它们不能像我预期的那样一起工作。

您正在使用 Bootstrap,但您没有使用 Bootstrap 的方法 - 对于边栏,我建议使用 Bootstrap 的网格系统:

<div class="container">
  <div class="row">
    <div class="col-sm-9">
      <!-- MAIN CONTENT HERE -->
    </div>
    <div class="col-sm-3">
      <!-- Sidebar HERE -->
    </div>
  </div>
</div>

这将确保使用您已经依赖的 Bootstrap 的 CSS 提供最佳水平的响应支持。