avalon 2.2.6 ie8 下 类名加载失败

Question

chrome ie9以上没有问题

代码如下

<ul ms-controller="list">
    <li ms-for="(index,el) in @items" ms-attr="{class:@fn(index)}" >
        {{el}}
    </li>
</ul>
<script>
    var list = avalon.define({
        $id:"list",
        items:["1","2","3"],
        fn:function(index){
            if(index===0){
                return 'first-row';
            }else if(index===this.items.length-1){
                return 'last-row';
            }else{
                return '';
            }
        }
    });
</script>

class类添加失败

Answer 1

已解决
ms-attr
换成了
:class="@fn(index)"