1、新建html文档。
2、书写hmtl代艨位雅剖码。<div class="container"> &造婷用痃lt;nav class="navbar navbar-default equinav" role="navigation"> <div class="navbar-header"> <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse"> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </button> <span class="navbar-brand">菜单</span> </div> <div class="collapse navbar-collapse"> <ul class="nav navbar-nav"> <li><a href="#">首页</a></li> <li><a href="#">百度经验特效</a></li> <li> <a href="#" class="dropdown-toggle" data-toggle="dropdown">百度经验 <b class="caret"></b></a> <ul class="dropdown-menu depth_0"> <li><a href="#">网页特效</a></li> <li><a href="#">网站模板</a></li> <li><a href="#">网页模板</a></li> <li><a href="#">flash动画</a></li> </ul> </li> <li><a href="#">百度经验</a></li> <li><a href="#">百度经验</a></li> <li><a href="#">百度经验</a></li> <li><a href="#">百度经验</a></li> <li><a href="#">百度经验</a></li> </ul> </div> </nav></div>
3、书写并添加js代码。<script src='js/jquery-2.1.1.min.js'></script><script src='js/bootstrap.min.js'></script><script src="js/index.js"></script>
4、书写并添加<script src="js/index.js"></script>代码。<script>var breakpoint = 0;function equiNavBreakpoint () {$('.equinav ul.navbar-nav > li').each(function(){ breakpoint += $(this).innerWidth(); });}equiNavBreakpoint();function equiNavMenu () {$('.equinav ul.navbar-nav > li').removeAttr('style');var mq = window.matchMedia('(min-width: 768px)');var nav = $('.equinav').innerWidth();var items = $('.equinav ul.navbar-nav > li').length;var space = nav - breakpoint;var spacer = parseInt(space / items); // Number of pixels to spread out to individual menu items. Since decimal places is not good with pixels we have to use parseInt.var xspace = nav - (breakpoint + (spacer * items));var xspacer = Math.ceil(xspace / items); // The remaning number of pixels to distribute to menu itemsvar num = 0;if (mq.matches) {if (nav > breakpoint) {$('.equinav').removeClass('equinav-collapse');if (breakpoint == 0) equiNavBreakpoint();$('.equinav ul.navbar-nav > li').each(function(){$(this).css({'width':'auto'});var itemwidth = 0;itemwidth = (num < xspace) ? ($(this).innerWidth() + spacer) + xspacer : $(this).innerWidth() + spacer;$(this).css({'width':itemwidth+'px'});num++;if ( $(this).find('.dropdown-menu').length != 0 ) {if (num == items) $(this).find('.dropdown-menu').addClass('pull-right');if ($(this).find('.dropdown-menu').innerWidth() < $(this).innerWidth()) $(this).find('.dropdown-menu').css({'width':$(this).innerWidth()+'px'});}});} else {$('.equinav').addClass('equinav-collapse');$('.equinav ul.navbar-nav > li > .dropdown-menu').removeAttr('style');}} else {$('.equinav').addClass('equinav-collapse');$('.equinav ul.navbar-nav > li > .dropdown-menu').removeAttr('style');};}equiNavMenu();$(window).resize(function(){equiNavMenu();});</script>
5、代码整体结构。
6、查看效果。
