手风琴模式的菜单：
在项目中我们会遇到不知层级的json数据，需要前端人员去遍历生成View视图，这种情况下我们就会用到递归方法。
angularjs中的dom结构也是可以用递归的方式去循环遍历数据。
<ulside-navigationclass="navmetismenu"ng-include="'navigations'"id="side-menu">
</ul>
<scriptid="navigations"type="text/ng-template">
<ling-repeat="navsinfunctionGroups">
<ahref="{{navs.functionpoint}}"><spanclass="nav-label">{{navs.name}}</span><spanng-if="navs.children.length"class="faarrow"></span></a>
<ulng-if="navs.children.length"ng-include="'navigations'"class="navnav-second-level"ng-init="functionGroups=navs.children"></ul>
</li>
</script>
另一种采用指令的方式：（未测试）
angular.module('demo').directive('recursion',function($compile){
functioncpl(element,link){
//normalizethelinkparameter
if(angular.isFunction(link)){
link={post:link};
}
//Breaktherecursionloopbyremovingthecontents
varcontents=element.contents().remove();
varcompiledContents;
return{
pre:(link&&link.pre)?link.pre:null,/**
*Compilesandre-addsthecontents
*/
post:function(scope,element){
//Compilethecontents
if(!compiledContents){
compiledContents=$compile(contents);
}
//Re-addthecompiledcontentstotheelement
compiledContents(scope,function(clone){
element.append(clone);
});
//Callthepost-linkingfunction,ifany
if(link&&link.post){
link.post.apply(null,arguments);
}
}
};
}
return{
restrict:'A',scope:{recursion:'='},template:'<ling-repeat="iteminrecursion">\
<ahref="{{item.cateId}}.html">{{item.cateName}}</a>\
<ulrecursion="item.child">\
</ul>\
</li>',compile:function(element){
returncpl(element,function(scope,iElement,iAttrs,controller,transcludeFn){
//Defineyournormallinkfunctionhere.
//Alternative:insteadofpassingafunction,//youcanalsopassanobjectwith
//a'pre'-and'post'-linkfunction.
});
}
};
});