本文介绍如何使用JavaScript正则表达式验证文件夹名称是否符合规范。重点讲解kebab-case（小写加中划线）和大驼峰命名法（PascalCase）的正则匹配逻辑，并结合关键字黑名单机制，确保文件名既符合格式要求又避开保留字。
背景：
在Git提交代码时，通常需要验证新增的文件或文件夹名称是否符合特定的命名规范。
具体规范如下：全部采用小写方式，以中划线分隔，使用kebab-case格式（小写、短横线连接）。正例如：
scripts / styles / components / images / utils / layouts / demo-styles / demo-scripts / img / doc；反例如：script / style / demo_scripts / demoStyles / imgs / docs。【特殊】VUE项目中的components目录下的组件文件夹需使用PascalCase格式（与驼峰法相似，单词首字母大写）。
因此，需要验证普通文件名是否符合中划线命名法（kebab-case），以及Vue组件文件夹是否符合大驼峰命名法（PascalCase）。
中划线命名法（kebab-case）：
思路：
1、排除文件名中包含空格的情况。
2、排除包含大写字母的情况。
3、排除其他连接方式（如——、_、.等），反向推导：命名中只能包含小写字母和连字符（-）。
4、排除保留关键字：如script、style、imgs、docs等。
结论：
1、限定以小写字母开头，中间只包含小写字母和连字符（-），并以小写字母结尾。正则表达式为：/^[a-z]{1}[a-z-]+[a-z]$/。
2、需额外排除关键字。
// 关键字
const KEYWORDS = ["script","style","imgs","docs","break","else","new","var","case","finally","return","void","catch","for","switch","while","continue","function","this","with","default","if","throw","delete","in","try","do","instranceof","typeof","abstract","enum","int","short","boolean","export","interface","static","byte","extends","long","super","char","final","native","synchronized","class","float","package","throws","const","goto","private ","transient","debugger","implements","protected ","volatile","double","import","public"]
// 正则：限定以小写字母开头，并且中间只包括小写字母和-，以小写字母结尾
let reg = /^[a-z]{1}[a-z-]*?[a-z]$/;
// /^[a-z]{1}[a-z-0-9]*?[a-z0-9]$/ (这个是限定以小写字母开头，中间小写or数字，结尾数字。两位数的情况下中间可以省略)
// 要判断的文件名
let fileName = `xxxxx`
if(KEYWORDS.indexOf(fileName) > -1){
// 文件名是关键字
}else if( reg.test(fileName) ){ // 判断：限定以小写字母开头，并且中间只包括小写字母和-，以小写字母结尾
// 符合要求
}else{
// 不符合要求
}大驼峰命名法（PascalCase）：
// 正则：限定以大写字母开头，并且中间只包括大写or小写字母，以小写字母结尾
let reg = /^[A-Z]{1}[a-zA-Z]*?[a-z]$/;
// 关键字
const KEYWORDS = ["script","style","imgs","docs","break","else","new","var","case","finally","return","void","catch","for","switch","while","continue","function","this","with","default","if","throw","delete","in","try","do","instranceof","typeof","abstract","enum","int","short","boolean","export","interface","static","byte","extends","long","super","char","final","native","synchronized","class","float","package","throws","const","goto","private ","transient","debugger","implements","protected ","volatile","double","import","public"]
// 大写首字母字母的关键字
let up_keywords = KEYWORDS.map(item=>{
return item.charAt(0).toUpperCase() + item.slice(1);
})
// 要判断的文件名
let fileName = `xxxxx`
if(up_keywords.indexOf(fileName) > -1){
// 文件名是关键字
}else if( reg.test(fileName) ){ // 判断：限定以小写字母开头，并且中间只包括小写字母和-，以小写字母结尾
// 符合要求
}else{
// 不符合要求
}小驼峰命名法（lowerCamelCase）：
// 正则：限定以大写字母开头，并且中间只包括大写or小写字母，以小写字母结尾
let reg = /^[a-z]{1}[a-zA-Z]*?[a-z]$/;
// 关键字
const KEYWORDS = ["script","style","imgs","docs","break","else","new","var","case","finally","return","void","catch","for","switch","while","continue","function","this","with","default","if","throw","delete","in","try","do","instranceof","typeof","abstract","enum","int","short","boolean","export","interface","static","byte","extends","long","super","char","final","native","synchronized","class","float","package","throws","const","goto","private ","transient","debugger","implements","protected ","volatile","double","import","public"]
// 要判断的文件名
let fileName = `xxxxx`
if(KEYWORDS .indexOf(fileName) > -1){
// 文件名是关键字
}else if( reg.test(fileName) ){ // 判断：限定以小写字母开头，并且中间只包括小写字母和-，以小写字母结尾
// 符合要求
}else{
// 不符合要求
}补充：JS正则匹配获取文件名。
//获取文件名，不带后缀
var file_name=file_path.replace(/(.*\/)*([^.]+).*/ig,"$2");
//获取文件后缀
1.var FileExt=file_path.replace(/.+\./,"");
2.var fileExtension = file_path.substring(file_path.lastIndexOf('.') + 1);
//截取文件后缀
var reg = /\.\w+$/;
var file_name = file_path.replace(reg,'');总结
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