下划线命名和驼峰命名的相互转化

 

 

源代码：

let s1 = 'CamelCaseStringInThisStuffParagraph'

let s2 = 'user_define_under_score_fun'

// 从underscore到camelcase比较简单

function toCameCase(s2) {

let segments = s2.split('_')

for (let i = 0; i < segments.length; i++) {

segments[i] = segments[i][0].toUpperCase() + segments[i].slice(1)

}

return segments.join('')

}

const r1 = toCameCase(s2)

console.log(r1);

// 从CamelScore到under_score

function toUnderScore(s1) {

let reg = /[A-Z]/g

let tmp

while (tmp = reg.exec(s1)) {

/*

tmp:

*/

let index = tmp.index

if (index === 0) {

s1 = s1[index].toLowerCase() + s1.slice(index + 1)

} else {

s1 = s1.slice(0, index) + '_' + s1[index].toLowerCase() + s1.slice(index + 1)

}

}

return s1

}

const r2 = toUnderScore(s1)

console.log(r2);