<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div id="app">
<h-title level="1">标题</h-title>
<h-title level="2">标题</h-title>
<h-title level="3">标题</h-title>
</div>
<script src="https://unpkg.com/vue/dist/vue.js"></script>
<script>
Vue.component("h-title",{
/* template渲染 */
// template:`
// <div>
// <h1 v-if="level==1"><slot></slot></h1>
// <h2 v-else-if="level==2"><slot></slot></h2>
// <h3 v-else-if="level==3"><slot></slot></h3>
// </div>
// `,
/* render渲染 */
render:function(h){
// createElement(标签名称,属性配置,children)
return h("h"+this.level,
{
attrs:{
"data-id":10
}
},
// 相当于<slot></slot>标签接收
this.$slots.default
)
},
props:{
level:{
type:String
}
}
});
let vm=new Vue({
el:"#app"
});
</script>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
*{margin: 0;padding: 0;}
.btn{
width: 80px;
line-height: 40px;
text-align: center;
color:#fff;
border-radius: 5px;
background-color: #ccc;
}
.success{background-color: green;}
.error{background-color: red;}
.info{background-color: pink;}
</style>
</head>
<body>
<div id="app">
<wql-button type="success">成功</wql-button>
<wql-button type="info">提示</wql-button>
<wql-button type="error">报错</wql-button>
<wql-button>默认</wql-button>
</div>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
Vue.component("wql-button",{
render:function(h){
return h("div",{
class:{
btn:true,
success:this.type=="success",
error:this.type=="error",
info:this.type=="info"
}
},this.$slots.default);
},
props:{
type:{
type:String
}
}
});
let vm=new Vue({
el:"#app"
});
</script>
</body>
</html>
原文：https://www.cnblogs.com/wuqilang/p/12345512.html