function-bind

What is function-bind?

The function-bind npm package is a polyfill for Function.prototype.bind, which is a method in JavaScript used to create a new function that, when called, has its 'this' keyword set to the provided value. The bind method can also prepend a fixed set of arguments to the arguments passed to the bound function when it is called.

What are function-bind's main functionalities?

Binding a function to a context

This feature allows you to bind a function to a specific context, so that the 'this' keyword inside the function refers to the provided context object.

var bind = require('function-bind');

function greet() {
  return 'Hello, ' + this.name;
}

var context = { name: 'Alice' };
var boundGreet = bind.call(greet, context);

console.log(boundGreet()); // 'Hello, Alice'

Prepending arguments to the bound function

This feature allows you to create a new function by not only binding it to a context but also prepending arguments to it. When the new function is called, these arguments are passed in front of any other provided arguments.

var bind = require('function-bind');

function add(a, b) {
  return a + b;
}

var addOne = bind.call(add, null, 1);

console.log(addOne(2)); // 3

Other packages similar to function-bind

lodash.bind

lodash.bind is a method from the Lodash library that provides similar functionality to function-bind. It allows you to bind functions to a context and optionally prepend arguments. Lodash offers a more extensive set of utility functions, whereas function-bind focuses solely on the bind functionality.

README

function-bind

Implementation of function.prototype.bind

Old versions of phantomjs, Internet Explorer < 9, and node < 0.6 don't support Function.prototype.bind.

Example

Function.prototype.bind = require("function-bind")

Installation

npm install function-bind

Contributors

• Raynos

MIT Licenced

Changelog

v1.1.2 - 2023-10-12

Merged

• Point to the correct file #16

Commits

• [Tests] migrate tests to Github Actions 4f8b57c
• [Tests] remove jscs 90eb2ed
• [meta] update .gitignore 53fcdc3
• [Tests] up to node v11.10, v10.15, v9.11, v8.15, v6.16, v4.9; use nvm install-latest-npm; run audit script in tests 1fe8f6e
• [meta] add auto-changelog 1921fcb
• [Robustness] remove runtime dependency on all builtins except .apply f743e61
• Docs: enable badges; update wording 503cb12
• [readme] update badges 290c5db
• [Tests] switch to nyc for coverage ea360ba
• [Dev Deps] update eslint, @ljharb/eslint-config, tape cae5e9e
• [meta] add funding field; create FUNDING.yml c9f4274
• [Tests] fix eslint errors from #15 f69aaa2
• [actions] fix permissions 99a0cd9
• [meta] use npmignore to autogenerate an npmignore file f03b524
• [Dev Deps] update @ljharb/eslint‑config, eslint, tape 7af9300
• [Dev Deps] update eslint, @ljharb/eslint-config, covert, tape 64a9127
• [Tests] use aud instead of npm audit e75069c
• [Dev Deps] update @ljharb/eslint-config, aud, tape d03555c
• [meta] add safe-publish-latest 9c8f809
• [Dev Deps] update @ljharb/eslint-config, tape baf6893
• [meta] create SECURITY.md 4db1779
• [Tests] add npm run audit c8b38ec
• Revert "Point to the correct file" 05cdf0f