angular js点击tab中的li标签加载相应div区域

<ul>

<li ng-click="tab = 1"> item 1</li>

<li ng-click="tab = 2"> item 2</li>

<li ng-click="tab = 3"> item 3</li>

</ul>

<div ng-if="tab == 1"></div>

<div ng-if="tab == 2"></div>

<div ng-if="tab == 3"></div>

app.run(function($rootScope){

$rootScope.tab = 1;//default

})