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详解vscode中console.log的两种快速写法

51自学网 2022-02-21 13:38:08
  javascript

(一)方法一:直接在script标签中提前定义,仅适用于该html文件!

 let add = function(a,b){ 	return a + b; }; console.log(add(20,300));  const { ['log']:C } = console; C(add(20,300));

(二)方法二:按tab键快速生成console.log,且光标在()内部,再次按tab键光标自动跳转到下一行!
1、打开vscode编辑器,选择文件->首选项->用户片段,输入javascript.json并按下enter进入。
初次使用我们会发现一段被注释的代码如下:

{	// 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:	// "Print to console": {	// 	"prefix": "log",	// 	"body": [	// 		"console.log('$1');",	// 		"$2"	// 	],	// 	"description": "Log output to console"	// }}

2、解除Example以下的区间代码如下,其中部分参数意义如下:
①prefix:代码快捷键的入口,在这里我们根据个人习惯进行设置即可,如我设置的cl,那么配合tab健就可以直接生成console.log;
②body表示代码主体:
$1表示生成代码快速生成后后光标首次出现的位置
$2写在"console.log('$1');"下面,表示在快速生成console.log()后,代码后会空出一行,并且再次按tab键时,光标会跳转到$2(空出的一行)的位置

{	// 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": "cl",		"body": [			"console.log('$1');",			"$2"		],		"description": "Log output to console"	}}

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