1. 文件--首选项--用户代码片段-vue.json : 添加

 

// {
// 	// Place your global snippets here. Each snippet is defined under a snippet name and has a scope, prefix, body and 
// 	// description. Add comma separated ids of the languages where the snippet is applicable in the scope field. If scope 
// 	// is left empty or omitted, the snippet gets applied to all languages. The prefix is what is 
// 	// used to trigger the snippet and the body will be expanded and inserted. Possible variables are: 
// 	// $1, $2 for tab stops, $0 for the final cursor position, and ${1:label}, ${2:another} for placeholders. 
// 	// Placeholders with the same ids are connected.
// 	// Example:
// 	// "Print to console": {
// 	// 	"scope": "javascript,typescript",
// 	// 	"prefix": "log",
// 	// 	"body": [
// 	// 		"console.log('$1');",
// 	// 		"$2"
// 	// 	],
// 	// 	"description": "Log output to console"
// 	// }
// }
{
	"生成 vue 模板": {
		"prefix": "vue",
		"body": [
			"<template>",
			"<div></div>",
			"</template>",
			"",
			"<script>",
	        "//这里可以导入其他文件（比如：组件，工具 js，第三方插件 js，json文件，图片文件等等）",
	        "//例如：import 《组件名称》 from '《组件路径》';",
			"",
			"export default {",
			"//import 引入的组件需要注入到对象中才能使用",
			"components: {},",
			"props: {},",
			"data() {",
			"//这里存放数据",
			"return {",
			"",
			"};",
			"},",
			"//计算属性 类似于 data 概念",
			"computed: {},",
			"//监控 data 中的数据变化",
			"watch: {},",
			"//方法集合",
			"methods: {",
			"",
			"},",
			"//生命周期 - 创建完成（可以访问当前 this 实例）",
			"created() {",
			"",
			"},",
			"//生命周期 - 挂载完成（可以访问 DOM 元素）",
			"mounted() {",
			"",
			"},",
			"beforeCreate() {}, //生命周期 - 创建之前",
			"beforeMount() {}, //生命周期 - 挂载之前",
			"beforeUpdate() {}, //生命周期 - 更新之前",
			"updated() {}, //生命周期 - 更新之后",
			"beforeDestroy() {}, //生命周期 - 销毁之前",
			"destroyed() {}, //生命周期 - 销毁完成",
	        "activated() {}, //如果页面有 keep-alive 缓存功能，这个函数会触发",
	"}",
			"</script>",
			"<style  scoped>",
			"$4",
			"</style>"
		],
		"description": "生成 vue 模板"
	},
	"http-get 请求": {
		"prefix": "httpget",
		"body": [
		"this.\\$http({",
		"url: this.\\$http.adornUrl(''),",
		"method: 'get',",
		"params: this.\\$http.adornParams({})",
		"}).then(({data}) => {",
		"})"
		],
		"description": "httpGET 请求"
		}
		,
		"http-post 请求": {
			"prefix": "httppost",
			"body": [
			"this.\\$http({",
			"url: this.\\$http.adornUrl(''),",
			"method: 'post',",
			"data: this.\\$http.adornData(data, false)",
			"}).then(({ data }) => { });"
			],
			"description": "httpPOST 请求"
			}
}

 在category.vue 文件空白处输入h ，可以显示用户片段

 在<script>中使用失败

 问题原因和解决： 在<script>使用的代码片段写在 javacript.json 中才能使用

VScode-Vue-用户代码片段无效 - Code World