在项目中运行v-for代码段时,<flexboxv-if="roleShow"style="padding:15px;box-sizing:border-box;"><flexb
在项目中运行v-for代码段时,
<flexbox v-if="roleShow" style="padding:15px; box-sizing: border-box;">
<flexbox-item v-for="role in roles " >
<x-button mini :type="role.type" style="padding: 0 14px" @click.native="btnClick(role.action)">{{role.value}}</x-button>
</flexbox-item>
</flexbox>
<flexbox v-if="roleShow" style="padding:15px; box-sizing: border-box;">
<flexbox-item v-for="role in roles " >
<x-button mini :type="role.type" style="padding: 0 14px" @click.native="btnClick(role.action)">{{role.value}}</x-button>
</flexbox-item>
</flexbox>出现告警:component lists rendered with v-for should have explicit keys. See https://vuejs.org/guide/list.html#key for more info.
解决方法:
在代码中绑定key值,可解决,如:
<flexbox v-if="roleShow" style="padding:15px; box-sizing: border-box;">
<flexbox-item v-for="(role,index) in roles " :key="index" >
<x-button mini :type="role.type" style="padding: 0 14px" @click.native="btnClick(role.action)">{{role.value}}</x-button>
</flexbox-item>
</flexbox>
PS:Vue2学习笔记:v-for指令
1.使用
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8">
<script src="http://unpkg.com/vue/dist/vue.js"></script>
<script type="text/javascript">
window.onload = function(){
var vm = new Vue({
el:'#box',
data:{
arr:['1','2','3'],
json:{a:'a',b:'b'}
}
});
}
</script>
</head>
<body>
<div id="box">
<p>循环数组</p>
<ul>
<li v-for="a in arr">
{{a}}
</li>
</ul>
<hr>
<p>循环出数组索引</p>
<ul>
<li v-for="(v,k) in arr">
{{v}}==>{{k}}
</li>
</ul>
<p>循环json</p>
<ul>
<li v-for="item in json">{{item}}</li>
</ul>
<p>循环json的键</p>
<ul>
<li v-for="(k,v) in json">
{{k}}==>{{v}}
</li>
</ul>
</div>
</body>
</html>
结果:
总结
以上所述是小编给大家介绍的解决vue组件中使用v-for出现告警问题,希望对大家有所帮助,如果大家有任何疑问欢迎给我留言,小编会及时回复大家的!
vue组件中使用v for vue v for