1、在拓展商店里搜索“minify”，安装，安装成功后点重新加载
2、使用：F1运行文件缩小器Minify压缩js代码。
使用Minify的方法介绍：
缩小您的js，css和html文件以节省传输带宽。直接调用每个缩小器，以允许传递设置：
JS： uglify -js v2.7.4
CSS： clean-css v3.4.21
HTML： html-minifier v3.2.2
使用F1 运行文件缩小器Minify。
包含Javascript和CSS文件的文件夹可以{dirname}.min.[css|js]使用F1 缩小为一个文件Minify Directory。可以为Javascript和CSS减少一个目录是可以接受的。
（可选）在已存在匹配的缩小文件（和/或目录）时，在保存时运行minify。启用您的用户或工作空间设置。设置默认值如下所示：
"minify.minifyExistingOnSave": false,"minify.js": {
"mangle": true,
"compress": {
"sequences": true,
"properties": true,
"dead_code": true,
"drop_debugger": true,
"unsafe": false,
"unsafe_comps": false,
"conditionals": true,
"comparisons": true,
"evaluate": true,
"booleans": true,
"loops": true,
"unused": true,
"hoist_funs": true,
"keep_fargs": true,
"keep_fnames": false,
"hoist_vars": false,
"if_return": true,
"join_vars": true,
"collapse_vars": false,
"reduce_vars": false,
"side_effects": true,
"pure_getters": false,
"pure_funcs": null,
"negate_iife": false,
"drop_console": false,
"passes": 1,
"global_defs": {}
},
"output": {
"ascii_only": false,
"inline_script": false,
"max_line_len": 32000,
"braces": false,
"semicolons": true,
"comments": false,
"shebang": true,
"preamble": null,
"quote_style": "best"
}},"minify.css": {
"advanced": true,
"aggressiveMerging": true,
"compatibility": "*",
"inliner": {},
"keepBreaks": false,
"keepSpecialComments": "*",
"mediaMerging": true,
"processImport": true,
"processImportFrom": ["all"],
"rebase": true,
"restructuring": true,
"root": "${workspaceRoot}",
"roundingPrecision": 2,
"semanticMerging": false,
"shorthandCompacting": true},"minify.html": {
"caseSensitive": false,
"collapseBooleanAttributes": true,
"collapseWhitespace": true,
"conservativeCollapse": false,
"customAttrAssign": [],
"customAttrCollapse": "",
"customAttrSurround": [],
"customEventAttributes": [ "^on[a-z]{3,}$" ],
"decodeEntities": false,
"html5": true,
"ignoreCustomComments": [ "^!" ],
"ignoreCustomFragments": ["<%[\s\S]*?%>", "<\?[\s\S]*?\?>"],
"includeAutoGeneratedTags": true,
"keepClosingSlash": false,
"maxLineLength": false,
"minifyCSS": true, //uses minify.css settings if true
"minifyJS": true, //uses minify.js settings if true
"minifyURLs": false,
"preserveLineBreaks": false,
"preventAttributesEscaping": false,
"processConditionalComments": false,
"processScripts": [],
"quoteCharacter": """,
"removeAttributeQuotes": false,
"removeComments": false,
"removeEmptyAttributes": false,
"removeEmptyElements": false,
"removeOptionalTags": false,
"removeRedundantAttributes": false,
"removeScriptTypeAttributes": false,
"removeStyleLinkTypeAttributes": false,
"sortAttributes": false,
"sortClassName": false,
"useShortDoctype": false}minifiy.css.root接受“ ${workspaceRoot}/ some / path”定义内部@import绝对根。
由于html-minifier还采用了clean-css和uglify-js，设置minifyJS或minifyCSS以true意志嵌入你为那些minifiers自动提供的设置。如果要使用一些其他方法，可以提供自己的设置作为对象。
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