新增 lay-comment 组件

example/src/components/LayComment.vue

@@ -0,0 +1,31 @@
+<template>
+    <div id="comment"></div>
+</template>
+<script>
+export default {
+  name: 'Utterances',
+  props: {
+    id: {
+        type: Number,
+        default: 6
+    }
+  },
+  methods: {
+    initValine () {
+        const utterances = document.createElement('script');
+        utterances.type = 'text/javascript';
+        utterances.async = true;
+        utterances.setAttribute('issue-number', this.id)
+        utterances.setAttribute('theme','github-light')
+        utterances.setAttribute('repo',`layui-vue/layui-vue`)
+        utterances.crossorigin = 'anonymous';
+        utterances.src = 'https://utteranc.es/client.js';
+        window.document.getElementById('comment').appendChild(utterances);
+
+    }
+  },
+  mounted: function(){
+    this.initValine()
+  }
+}
+</script>