第一步:

文件 --> 首选项 --> 用户代码片段 --> 输入vue，选择vue.json -->复制下面代码内容并保存

{
  "Print to console": {
    "prefix": "Vue模板",
    "body": [
      "<template>",
      "\t<div>\n",
      "\t</div>",
      "</template>\n",
      "<script>",
      "\texport default {",
      "\t\tprops: {\n",
      "\t\t},",
      "\t\tcomponents: {\n",
      "\t\t},",
      "\t\tdata(){",
      "\t\t\treturn {\n\t\t\t\t$0",
      "\t\t\t}",
      "\t\t},",
      "\t\tmethods: {\n",
      "\t\t}",
      "\t}",
      "</script>\n",
      "<style lang=\"scss\">\n",
      "</style>"
    ],
    "description": "Vue模板"
  }
}

第二步: 添加配置，让vscode允许自定义的代码片段提示出来

文件 --> 首选项 --> 设置 —> 添加这2项

“editor.snippetSuggestions”: “top”,
“editor.formatOnPaste”: true

第四步:测试是否添加成功
测试方法： 新建vue后缀文件，在空白文件内输入vue会出现提示，利用上下箭头选择第二个”vue模板“按下回车，如下面第二张就OK了