How to create custom code snippets in vscode

这里以创建一个 javascript 代码片段为例：

1、首先可以打开一个javascript的文件(或在当前打开文件中)按快捷键Ctrl+Shift+P打开命令输入 snippet : (也可以点击文件=>首选项=>用户代码片段)

2、选择选项后会出现一个语言列表用以选择给哪种语言创建代码段。这里以设置javascript的Console.WriteLine代码段为例，其他语言方法是一样的。

选择javascript后会自动打开一个JSON格式的配置文件

{
	// Place your snippets for javascript here. Each snippet is defined under a snippet name and has a prefix, body and 
	// description. 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": {
	// 	"prefix": "log",
	// 	"body": [
	// 		"console.log('$1');",
	// 		"$2"
	// 	],
	// 	"description": "Log output to console"
	// },
}

根据自身需要修改内容如下：

{
	// Place your snippets for javascript here. Each snippet is defined under a snippet name and has a prefix, body and 
	// description. 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:
	"Page Header": {
		"prefix": "ducx",
		"body": [
			"/**",
			" * $1",
			" * ",
			" * @author ducx",
			" * @created $CURRENT_YEAR/$CURRENT_MONTH/$CURRENT_DATE $CURRENT_HOUR:$CURRENT_MINUTE:$CURRENT_SECOND",
			" */",
			"$2"
		],
		"description": "page header"
	}
}

保存之后，打开一个 js 文件，输入前缀 ducx 出现快捷提示窗后回车，此时已经生成了我们自定义的代码片段结构，依次按 tab 。

/**
 * 
 * 
 * @author ducx
 * @created 2018/08/31 17:08:37
 */

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