Lightweight library with various utilities for userscripts - register listeners for when CSS selectors exist, intercept events, create persistent & synchronous data stores, modify the DOM more easily and much more
目前为
此脚本不应直接安装，它是一个供其他脚本使用的外部库。如果您需要使用该库，请在脚本元属性加入：// @require https://update.gf.qytechs.cn/scripts/472956/1525262/UserUtils.js
Lightweight library with various utilities for userscripts - register listeners for when CSS selectors exist, intercept events, create persistent & synchronous data stores, modify the DOM more easily and much more.
Contains builtin TypeScript declarations. Supports ESM and CJS imports via a bundler and global declaration via @require
The library also works in any DOM environment without the GreaseMonkey API, but some features will be unavailable or limited.
You may want to check out my template for userscripts in TypeScript that you can use to get started quickly. It also includes this library by default.
If you like using this library, please consider supporting the development ❤️
View the documentation of previous major releases:
8.0.0, 7.0.0, 6.0.0, 5.0.0, 4.0.0, 3.0.0, 2.0.0, 1.0.0, 0.5.3
SelectorObserver - class that manages listeners that are called when selectors are found in the DOMgetUnsafeWindow() - get the unsafeWindow object or fall back to the regular window objectaddParent() - add a parent element around another elementaddGlobalStyle() - add a global style to the pagepreloadImages() - preload images into the browser cache for faster loading later onopenInNewTab() - open a link in a new tabinterceptEvent() - conditionally intercepts events registered by addEventListener() on any given EventTarget objectinterceptWindowEvent() - conditionally intercepts events registered by addEventListener() on the window objectisScrollable() - check if an element has a horizontal or vertical scroll barobserveElementProp() - observe changes to an element's property that can't be observed with MutationObservergetSiblingsFrame() - returns a frame of an element's siblings, with a given alignment and sizesetInnerHtmlUnsafe() - set the innerHTML of an element using a Trusted Types policy without sanitizing or escaping itclamp() - constrain a number between a min and max valuemapRange() - map a number from one range to the same spot in another rangerandRange() - generate a random number between a min and max boundarydigitCount() - calculate the amount of digits in a numberDataStore - class that manages a hybrid sync & async persistent JSON database, including data migrationDataStoreSerializer - class for importing & exporting data of multiple DataStore instances, including compression, checksumming and running migrationsDialog - class for creating custom modal dialogs with a promise-based API and a generic, default styleNanoEmitter - tiny event emitter class with a focus on performance and simplicity (based on nanoevents)Debouncer - class for debouncing function calls with a given timeoutdebounce() - function wrapper for the Debouncer class for easier usageautoPlural() - automatically pluralize a stringpauseFor() - pause the execution of a function for a given amount of timefetchAdvanced() - wrapper around the fetch API with a timeout optioninsertValues() - insert values into a string at specified placeholderscompress() - compress a string with Gzip or Deflatedecompress() - decompress a previously compressed stringcomputeHash() - compute the hash / checksum of a string or ArrayBufferrandomId() - generate a random ID of a given length and radixrandomItem() - returns a random item from an arrayrandomItemIndex() - returns a tuple of a random item and its index from an arraytakeRandomItem() - returns a random item from an array and mutates it to remove the itemrandomizeArray() - returns a copy of the array with its items in a random ordertr() - simple JSON-based translation system with placeholder and nesting supporttr.forLang() - translate with the specified language instead of the currently active onetr.setLanguage() - set the currently active language for translationstr.getLanguage() - returns the currently active languagetr.addTranslations() - add a language and its translationstr.getTranslations() - returns the translations for the given language or the currently active onetr.deleteTranslations() - delete the translations for the given language or the active onetr.hasKey() - check if a translation key exists for the given or active languagetr.addTransform() - add a transformation function to dynamically modify the translation valuetr.deleteTransform() - delete a transformation function that was previously addedhexToRgb() - convert a hex color string to an RGB or RGBA value tuplergbToHex() - convert RGB or RGBA values to a hex color stringlightenColor() - lighten a CSS color string (hex, rgb or rgba) by a given percentagedarkenColor() - darken a CSS color string (hex, rgb or rgba) by a given percentageStringifiable - any value that is a string or can be converted to one (implicitly or explicitly)NonEmptyArray - any array that should have at least one itemNonEmptyString - any string that should have at least one characterLooseUnion - a union that gives autocomplete in the IDE but also allows any other value of the same typePrettify - expands a complex type into a more readable format while keeping functionality the sameValueGen - a "generator" value that allows for super flexible value typing and declarationStringGen - a "generator" string that allows for super flexible string typing and declaration, including enhanced support for unionsShameless plug: I made a template for userscripts in TypeScript that you can use to get started quickly. It also includes this library by default.
If you are using a bundler (like webpack, rollup, vite, etc.), you can install this package in one of the following ways:
npm i @sv443-network/userutils
pnpm i @sv443-network/userutils
yarn add @sv443-network/userutils
npx jsr install @sv443-network/userutils
deno add jsr:@sv443-network/userutils
Then import it in your script as usual:
// on Node:
import { addGlobalStyle } from "@sv443-network/userutils";
// on Deno:
import { addGlobalStyle } from "jsr:@sv443-network/userutils";
// you can also import the entire library as an object (not recommended because of worse treeshaking support):
import * as UserUtils from "@sv443-network/userutils";
If you are not using a bundler, want to reduce the size of your userscript, or declared the package as external in your bundler, you can include the latest release by adding one of these directives to the userscript header, depending on your preferred CDN:
Versioned (recommended):
// @require https://cdn.jsdelivr.net/npm/@sv443-network/userutils@INSERT_VERSION/dist/index.global.js
// @require https://unpkg.com/@sv443-network/userutils@INSERT_VERSION/dist/index.global.js
Non-versioned (not recommended because auto-updating):
// @require https://update.gf.qytechs.cn/scripts/472956/UserUtils.js
// @require https://openuserjs.org/src/libs/Sv443/UserUtils.js
Note:
In order for your userscript not to break on a major library update, use one the versioned URLs above after replacingINSERT_VERSIONwith the desired version (e.g.8.3.2) or the versioned URL that's shown at the top of the GreasyFork page.
Then, access the functions on the global variable UserUtils:
UserUtils.addGlobalStyle("body { background-color: red; }");
// or using object destructuring:
const { clamp } = UserUtils;
console.log(clamp(1, 5, 10)); // 5
If you're using TypeScript and it complains about the missing global variable UserUtils, install the library using the package manager of your choice and add the following inside a .d.ts file somewhere in the directory (or a subdirectory) defined in your tsconfig.json's baseUrl option or include array:
declare const UserUtils: typeof import("@sv443-network/userutils");
declare global {
interface Window {
UserUtils: typeof UserUtils;
}
}
UserUtils not being defined. To fix this, add the following to your ESLint configuration file:
json
"globals": {
"UserUtils": "readonly"
}
This library is licensed under the MIT License.
See the license file for details.
Made with ❤️ by Sv443
If you like this library, please consider supporting the development
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