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console

            
<!DOCTYPE html>
<html>

<head>
	<title>My first Vue app</title>
</head>

<body>
	<div id="app">
		{{ message }}
		<anchored-heading level="3">321321</anchored-heading>
        <button @click="test">test</button>
    </div>

	<script>
	Vue.component('anchored-heading', {
        render: function (createElement) {
            console.log(createElement)
            return createElement(
            'h' + this.level,   // 标签名称
            this.$slots.default // 子节点数组
            )
        },
        props: {
            level: {
            type: Number,
            required: true
            }
        },
    })
    var app = new Vue({
      el: '#app',
      data: {
        message: 'Hello Vue!'
      },
              methods: {
            test() {
                console.log(123)
            }
        }
    })
	</script>
</body>

</html>

            

                
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