如何使用js正则表达式验证文件夹名是否符合规范
作者：yaya小小狸
众所周知正则表达式非常强大,下面这篇文章主要给大家介绍了关于如何使用js正则表达式验证文件夹名是否符合规范的相关资料,文中通过实例代码介绍的非常详细,需要的朋友可以参考下
背景：
git提交代码时需要验证新增的文件名称是否复合规范。具体规范如下：
全部采用小写方式， 以中划线分隔，用 kebab-case方式 （小写、短横线连接方式） 正例：
scripts / styles / components / images / utils / layouts / demo-styles / demo-scripts / img / doc反例：script / style / demo_scripts / demoStyles / imgs / docs【特殊】VUE 的项目中的 components 中的组件目录使用PascalCase格式（与驼峰法相似，单词大写开头）
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vvue的component下的文件夹 大驼峰命名法（CamelCase）
中划线命名法（kebab-case）：
思路：
1、排除文件名有空格
2、排除大写字母
3、连接方式为其他方式比如：—— _ . 等（反推：命名中只能有小写字母和-）
4、排除关键字：script style imgs docs等等
结论：
1、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：/^[a-z]{1}[a-z-]+[a-z]$/。
2、排除关键字。
// 关键字
const KEYWORDS = ["script","style","imgs","docs","break","else","new","var","case","finally","return","void","catch","for","switch","while","continue","function","this","with","default","if","throw","delete","in","try","do","instranceof","typeof","abstract","enum","int","short","boolean","export","interface","static","byte","extends","long","super","char","final","native","synchronized","class","float","package","throws","const","goto","private ","transient","debugger","implements","protected ","volatile","double","import","public"]
// 正则：限定以小写字母开头，并且中间只包括小写字母和-，以小写字母结尾
let reg = /^[a-z]{1}[a-z-]*?[a-z]$/;
// /^[a-z]{1}[a-z-0-9]*?[a-z0-9]$/ (这个是限定以小写字母开头，中间小写or数字，结尾数字。两位数的情况下中间可以省略)
// 要判断的文件名
let fileName = `xxxxx`
if(KEYWORDS.indexOf(fileName) > -1){
// 文件名是关键字
}else if( reg.test(fileName) ){ // 判断：限定以小写字母开头，并且中间只包括小写字母和-，以小写字母结尾
// 符合要求
}else{
// 不符合要求
}大驼峰命名法（CamelCase）：
// 正则：限定以大写字母开头，并且中间只包括大写or小写字母，以小写字母结尾
let reg = /^[A-Z]{1}[a-zA-Z]*?[a-z]$/;
// 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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