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@keworks/string-utils

v0.1.1

Published

javascript string utils

Downloads

14

Readme

string-utils.js

Npm version Gitee Go gitee-go-test Build Status

原 php-trim-plus

Javascript 字符串处理的实用程序。保留原 php-trim-plus 的所有特性,并扩展了对 Buffer、ArrayBuffer、TypedBuffer的支持。

目前主要提供如下的函数工具:

  • toSafeString
  • isBufferObject, bufferToString
  • trim, ltrim, rtrim
  • isEmptyString, isEmptyStringOrWhitespace
  • isString, isSymbol (from lodash)

使用说明

toSafeString

  • unicode 正规化处理
  • 传入数组打扁,实用 join 处理
  • Symbol 提取字符
  • 函数转为空字符
  • 对象,优先尝试执行对象的 toString 方法
toSafeString(value)

// 处理数组时,第二个字符为数组拼接的连接符
toSafeString(['a', 'b', 'c'], '/'); // 'a/b/c'

// 处理 buffer 时,第二个参数为 encoding
toSafeString(Buffer.from('hello'), 'base64');

trim

trim(str, charList, isPlus)
ltrim(str, charList, isPlus)
rtrim(str, charList, isPlus)
trim(' 开源中国 '); // '开源中国'
trim(' 红薯-- ', '-'); // '红薯'

str: string 要截取的字符串 charList: string 要额外截取的字符串 isPlus: boolean 对 charList 是在现有空字符的基础上追加 charList,默认为 true,trim.Replace or trim.Plus

isEmptyString, isEmptyStringOrWhitespace

isEmptyString(value);

isEmptyString(null); // true
isEmptyString(undefined); // true
isEmptyString(''); // true
isEmptyString([]); // true 当前版本修改
isEmptyString({}); // false

是否为空白字符串,这里不会对 value 进行trim,如果需要检查是否为纯粹的空格,请使用 isEmptyStringOrWhitespace

isEmptyStringOrWhitespace(value);

isEmptyStringOrWhitespace(null); // true
isEmptyStringOrWhitespace(undefined); // true
isEmptyStringOrWhitespace(''); // true
isEmptyStringOrWhitespace(' '); // true
isEmptyStringOrWhitespace('\t'); // true
isEmptyStringOrWhitespace('\n'); // true
isEmptyStringOrWhitespace([]); // true 当前版本修改
isEmptyStringOrWhitespace({}); // false

是否为空白字符串或者是只包含空格符号的空白字符串,这里对 value 进行trim。

isSymbol(value); 

判断值是否为Symbol