utils-gear

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string ​

source code

常用 string 处理函数

encryptedPhone ​

隐藏手机中文四位数

signature:

typescript
function encryptedPhone(num: string | number, placeholder = '*'): string;

example:

typescript
encryptedPhone(13311112222); // '133****2222'
encryptedPhone(13311112222, '#'); // '133####2222'

transFirstLetterTo ​

字符串首字母大小写转换

signature:

typescript
function transFirstLetterTo(str: string, to: 'upper' | 'lower'): string;

example:

typescript
transFirstLetterTo('abc', 'upper'); // Abc
transFirstLetterTo('abc-de', 'upper'); // Abc-de''
transFirstLetterTo('ABC', 'lower'); // aBC

whiteSpace ​

返回指定数量的空格。 num 需要大于 0，默认 num = 1

signature:

typescript
function whiteSpace(num: number): string;

camelCase ​

字符串转为 camelCase 格式

signature:

typescript
function camelCase(str: string): string;

example:

typescript
camelCase('foo-bar'); // fooBar
camelCase('FooBar'); // fooBar

pascalCase ​

字符串转为 pascalCase 格式

signature:

typescript
function pascalCase(str: string): string;

example:

typescript
pascalCase('foo-bar'); // FooBar
pascalCase('Foo-Bar'); // FooBar

kebabCase ​

字符串转 kebab-case

signature:

typescript
function kebabCase(str: string): string;
typescript
kebabCase('FooBar'); // foo-bar
kebabCase('foo bar'); // foo-bar

snakeCase ​

字符串转 snake_case

signature:

typescript
function snakeCase(str: string): string;

example:

typescript
snakeCase('fooBar'); // foo_bar
snakeCase('FooBar'); // foo_bar

replaceAt ​

替换字符串中指定索引位置的字符

signature:

typescript
function replaceAt(str: string, index: number, char: string): string;

example:

typescript
replaceAt('footbar', 3, 'T'); // fooTbar

deleteAt ​

删除字符串中指定索引位置的字符

signature:

typescript
function deleteAt(str: string, index: number): string;

example:

typescript
deleteAt('footbar', 3); // foobar

removeSpaces ​

移除字符串中指定位置的空格

signature:

typescript
function removeSpaces(str: string, option: 'start' | 'end' | 'both' | 'all' = 'all'): string;

example:

typescript
removeSpaces('  hello world  '); // "helloworld"
removeSpaces('  hello world  ', 'start'); // "hello world  "
removeSpaces('  hello world  ', 'end'); // "  hello world"
removeSpaces('  hello world  ', 'both'); // "hello world"

uuid ​

随机生成一个uuid(v4)

signature:

typescript
function uuid(): string;

example:

typescript
uuid(); // '4e5f6f7f-8f9a-11ec-9dcb-0242ac120002'

encodeBase64 ​

将字符串编码为base64格式
signature:

typescript
function encodeBase64(str: string): string;

example:

typescript
encodeBase64('hello 😁 世界'); // aGVsbG8g8J+YgSDkuJbnlYw=

decodeBase64 ​

解码base64

signature:

typescript
function decodeBase64(base64: string): string;

example:

typescript
decodeBase64('aGVsbG8g8J+YgSDkuJbnlYw='); // hello 😁 世界

countChar ​

统计字符串中指定字符出现的次数

signature:

ts
function countChar(str: string, char: string): number;

example:

ts
countChar('hello world', 'o'); // 2

formateBytes ​

格式化字节数

signature:

ts
function formatBytes(bytes: number, decimals: number = 2): string;

example:

ts
formatBytes(1024); // 1KB
formatBytes(1048576); // 1MB