用JS做的简单的可折叠的两级树形菜单

可折叠的树形菜单想必大家并不陌生吧，实现方法有多种，在本文将为大家介绍下js是如何实现的，希望对大家有所帮助

复制代码 代码如下:

<!--
body{
background-color:#ffdee0;
}
#navigation {
width:200px;
font-family:Arial;
}
#navigation > ul {
list-style-type:none;
margin:0px;
padding:0px;
}
#navigation > ul >li {
border-bottom:1pxsolid #ED9F9F;
}
#navigation > ul >li > a{
display:block;
padding:5px5px 5px 0.5em;
text-decoration:none;
border-left:12pxsolid #711515;
border-right:1pxsolid #711515;
}
#navigation > ul >li > a:link, #navigation >ul >li > a:visited{
background-color:#c11136;
color:#FFFFFF;
}
#navigation > ul >li > a:hover{
background-color:#990020;
color:#ffff00;
}
.txt{
background-color:#c11136;
color:#FFFFFF;
padding:5px5px 5px 0.5em;
text-decoration:none;
border-left:12pxsolid #711515;
border-right:1pxsolid #711515;
}

/* 子菜单的CSS样式 */
#navigation ul li ul{
list-style-type:none;
margin:0px;
padding:0px0px 0px 0px;
}
#navigation ul li ulli{
border-top:1pxsolid #ED9F9F;
}
#navigation ul li ulli a{
display:block;
padding:3px3px 3px 0.5em;
text-decoration:none;
border-left:28pxsolid #a71f1f;
border-right:1pxsolid #711515;
}
#navigation ul li ulli a:link, #navigationul li ul lia:visited{
background-color:#e85070;
color:#FFFFFF;
}
#navigation ul li ulli a:hover{
background-color:#c2425d;
color:#ffff00;
}
#navigation ul li ul.myHide{ /* 隐藏子菜单 */
display:none;
}
#navigation ul li ul.myShow{ /* 显示子菜单 */
display:block;
}
-->

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