@44north/utilities 中文文档教程

Question

@44north/utilities

包含许多小实用程序的模块可在您的应用程序中使用，

Install

npm install @44north/utilities

或者

yarn add @44north/utilities

capitalize

import { capitalize } from "@44north/utilities";

const value = "foo bar";

console.log(capitalize(value)); // -> Foo bar

uppercase

import { uppercase } from "@44north/utilities";

const value = "foobar";

console.log(uppercase(value)); // -> FOOBAR

lowercase

import { lowercase } from "@44north/utilities";

const value = "FOOBAR";

console.log(lowercase(value)); // -> foobar

camelCase

import { camelCase } from "@44north/utilities";

const value = "foo-bar";

console.log(camelCase(value)); // -> fooBar

pascalCase

import { pascalCase } from "@44north/utilities";

const value = "foo_bar";

console.log(pascalCase(value)); // -> FooBart

formatPrice

import { formatPrice } from "@44north/utilities";

const value = 1000;

console.log(formatPrice(value)); // -> "$1,000.00"

可以选择将某些选项传递给格式化程序，然后

import { formatPrice } from "@44north/utilities";

const value = 1000.99;

console.log(
    formatPrice(value, {
        minimumFractionDigits: 0,
        maximumFractionDigits: 0
    })
); // -> "$1,001"

doesKeyExists

import { doesKeyExists } from "@44north/utilities";

const obj = { foo: "bar" };

console.log(doesKeyExists(obj, "foo")); // -> true

slugify

import { slugify } from "@44north/utilities";

const value = "Foo Bar Baz";

console.log(slugify(value)); // -> foo-bar-baz

isValidEmailAddress

import { isValidEmailAddress } from "@44north/utilities";

const value = "Foo Bar Baz";

console.log(isValidEmailAddress(value)); // -> false
console.log(isValidEmailAddress("test@example.com")); // -> true

asBool

import { asBool } from "@44north/utilities";

const value = "True";

console.log(asBool(value)); // -> true: boolean

sortObjectArrayByKey

import { sortObjectArrayByKey } from "@44north/utilities";

const startingData = [
    {
        label: "1/2",
        value: "50"
    },
    {
        label: "1",
        value: "100"
    },
    {
        label: "1/4",
        value: "25"
    }
];

// SORT BY LABEL KEY ASC
const sortedDataDesc = sortObjectArrayByKey(startingData, "label");
console.log(sortedDataDesc.map((o) => o.value).join(",")); // -> 100,50,25

// SORT BY LABEL KEY DESC
const sortedDataDesc = sortObjectArrayByKey(startingData, "label", "desc");
console.log(sortedDataDesc.map((o) => o.value).join(",")); // -> 25,50,100

// SORT BY VALUE WITH A FUNCTION
const sortedDataCustom = sortObjectArrayByKey(startingData, "value", (a, b) => {
    if (Number(a) < Number(b)) {
        return -1;
    }
    if (Number(a) > Number(b)) {
        return 1;
    }
    return 0;
});
console.log(sortedDataCustom.map((o) => o.value).join(",")); // -> 25,50,100

startsWith

如果提供的值包含提供的条件字符串，则

import { startsWith } from "@44north/utilities";

const value = "foobar";
if (startsWith(value, "foo")) {
    // it's true!
}

返回一个布尔值。 您可以选择将 RegExp 标志作为第三个参数传递。 不区分大小写是我的默认设置。

endsWith

如果提供的值包含提供的条件字符串，则返回一个布尔值。

import { endsWith } from "@44north/utilities";

const value = "foobar";
if (endsWith(value, "bar")) {
    // it's true!
}

您可以选择将 RegExp 标志作为第三个参数传递。 不区分大小写是我的默认设置。

contains

如果提供的值包含提供的条件字符串，则返回一个布尔值。

import { contains } from "@44north/utilities";

const value = "foobar";
if (contains(value, "oba")) {
    // it's true!
}

您可以选择将 RegExp 标志作为第三个参数传递。 不区分大小写是我的默认设置。

validatePageSlug

如果提供的 URI 的所有段都是 slug，则返回。

import { validatePageSlug } from "@44north/utilities";

console.log(validatePageSlug("/foo/bar/baz")); // -> true
console.log(validatePageSlug("/foo//bar/baz")); // -> false
console.log(validatePageSlug("/foo/bar baz")); // -> false