常见的代码片段

TypeScipt的用户代码片段

{
	"create class":{
		"prefix": "crtc",
		"body": [
			"/** Created by Naiking.",
			" *  $CURRENT_YEAR-$CURRENT_MONTH-$CURRENT_DATE $CURRENT_HOUR:$CURRENT_MINUTE:$CURRENT_SECOND",
			" *  ",
			" */",
			"//Learn TS:https://docs.cocos.com/creator/manual/zh/scripting/typescript.html",
			"//Learn Attribute:https://docs.cocos.com/creator/manual/zh/scripting/reference/attributes.html",
			"//Life-cycle:https://docs.cocos.com/creator/manual/zh/scripting/life-cycle-callbacks.html",
			"const {ccclass, property} = cc._decorator;",
			"@ccclass",
			"export default class $TM_FILENAME_BASE extends cc.Component {",
			"\t//@property(cc.Label)",
			"\t//label: cc.Label = null;",
			"\t//onLoad(){}",
			"\tstart(){",
			"\t\t",
			"\t}",
			"\tupdate(dt){}",
			"}"]
	},
}

提供一套较常见的“用户代码片段”
“文件”--“首选项”--“用户代码片段”--选择一个你需要设置的开发语言
本例是以javascript为例。（typesciprt的也同样的定义关键字）

其实这个文件，已经提供的一个最基础的示例了。
我的自定义添加了：创建文件块，加入作者，创建时间，设置光标，缩进符号

{
	// 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"
	// }
	"import namespace":{
		"prefix": "import",
		"body": "let $1=require('$1');",
		"description": "import"
	},
	"create class":{
		"prefix": "crtc",
		"body": [
			"/** Created by Naiking.",
			" *  $CURRENT_YEAR-$CURRENT_MONTH-$CURRENT_DATE $CURRENT_HOUR:$CURRENT_MINUTE:$CURRENT_SECOND",
			" *  ",
			" */",
			"var $TM_FILENAME_BASE = cc.Class({",
			"// extends: cc.Component,",
			"\tname: '$TM_FILENAME_BASE',",
			"\tproperties: {",
			"\t\t$1",
			"\t},",
			"\tctor: function () {",
			"\t\t//this.xxx=arguments[0];",
			"\t}",
			"});",
			"module.exports =$TM_FILENAME_BASE;"]
	},
	"signal instance":{
		"prefix": "signal",
		"body": [
		"_instance:null,",
        "getInstance:function(){",
            "\tif(!$TM_FILENAME_BASE._instance)",
            "\t{",
                "\t\t$TM_FILENAME_BASE._instance=new $TM_FILENAME_BASE();",
            "\t}",
            "\treturn $TM_FILENAME_BASE._instance;",
        "}"
		]
	},
	"add new event type":{
		"prefix": "evttype",
		"body": "$1:'$1'"
	}
}

更详细的请参阅：
https://blog.csdn.net/maokelong95/article/details/54379046