描述

将字符串转成蛇形命名法

1.示例

import { snakeCase } from 'sf-utils2'

console.log(snakeCase('string')) // => string
console.log(snakeCase('camelCase')) // => camel_case
console.log(snakeCase('param-case')) // => param_case
console.log(snakeCase('PascalCase')) // => pascal_case
console.log(snakeCase('UPPER_CASE')) // => upper_case
console.log(snakeCase('snake_case')) // => snake_case
console.log(snakeCase('sentence case')) // => sentence_case
console.log(snakeCase('Title Case')) // => title_case
console.log(snakeCase('dot.case')) // => // dot_case

console.log(snakeCase('')) // => ''
console.log(snakeCase(null)) // => ''
console.log(snakeCase(undefined)) // => ''

console.log(snakeCase('Abc ___ 123 ___ xYz')) // => abc_123_x_yz
console.log(snakeCase('123__abc  ... ?// {#} def 12')) // => 123_abc_def_12
console.log(snakeCase('	tab space ??? ________')) // => tab_space
console.log(snakeCase('___?||123  abc|| 123..123')) // => 123_abc_123_123
console.log(snakeCase('!@#$%  {}|":;" ABC XyZ G123H')) // => abc_xy_z_g123h
console.log(snakeCase(' ^&* #DEFine x: 15 + ==')) // => define_x_15
console.log(snakeCase('123456789')) // => 123456789

2.入参说明

参数	说明	类型	是否必填	默认值
str	要调整的字符串	String	-	-

3.源码

源码，点开查看 👈

/**
 * 将字符串转成蛇形命名法
 * @param {String} str
 * @returns {string}
 */
function snakeCase(str) {
  if (!str) return ''
  return String(str)
    .replace(/^[^A-Za-z0-9]*|[^A-Za-z0-9]*$/g, '')
    .replace(/([a-z])([A-Z])/g, (m, a, b) => a + '_' + b.toLowerCase())
    .replace(/[^A-Za-z0-9]+|_+/g, '_')
    .toLowerCase()
}