ng-repeat 如果数据为空用 替换占位

<div class="float_left width_50 border_b_top_eee border_b_right_eee bg_ff padding_left_15 padding_right_15 padding_top_10 line_height_15"
     ng-click="addPackage($event,{{item.id}})" ng-repeat="item in deviceTypeLists">
    <div class="color_e5005a font_16 oneline_nobreak">
        {{item.name}}
    </div>
    <div class="color_99 oneline_nobreak">
        {{item.description || "&nb"+"sp;"}}
    </div>
    <div class="line_height_40px color_e5005a">
        ￥
        <span ng-bind="item.price">
        </span>
    </div>
</div>

如果item.description为null 或者为“”，则显示后面的内容

{{item.description || "&nb"+"sp;"}}