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js-wrench

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JS函数库

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import ltrim from './ltrim' import toUpperCase from './toUpperCase' /** * @description 首字母大写 * * @param {string} str 传入一个字符串 * @return {*} {string} 返回一个新的首字母大写的字符串 * @example toFirstUpper("abc") => Abc toFirstUpper("ABC") => ABC */ const toFirstUpper = (str: string): string => { str = ltrim(str) //去掉左边的空格 return toUpperCase(str.slice(0, 1)) + str.slice(1) } export default toFirstUpper