vue v-if判断数组长度报错
例: 当goodsData.service数组长度大于0时显示
<div id="service" v-if="goodsData.service.length>0">显示内容 </div>
vue.esm.js?efeb:628 [Vue warn]: Error in render: "TypeError: Cannot read property 'length' of undefined
解决方案
<div id="service" v-if="goodsData.service!== undefined && goodsData.service!== null && goodsData.service.length>0" >显示内容</div>