JS Viewport Utils v3

Includes:

• A standalone, plain JavaScript object, viewportUtils
• AMD and Node/CommonJS support

Installation

AMD, Node.js, CommonJS

NPM

npm install js-viewport-utils

And then:

var viewportUtils = require('js-viewport-utils');

Bower:

bower install js-viewport-utils

Traditional include

<script src="path-to/js-viewport-utils.js"></script>

In Angular projects / Typescript / ES6

import {inViewport, inViewportBottom} from "js-viewport-utils";

Usage

Basic, with optional settings

var foo = document.getElementById("foo");
viewportUtils.inViewport(foo, {sides: "left"});

If working with jQuery

var $foo = jQuery("#foo");
viewportUtils.inViewport($foo[0], {sides: "left"});

Sides can be passed as unique string with spaces

var options = {sides: "top right left bottom"}

###Use another element as viewport

var bar = document.querySelector("#bar"); // Alternative for `getElementById`
viewportUtils.inViewport(elem, {container: bar});

###Custom thresholds

viewportUtils.inViewport(elem, {top: 12, right: 12});

For more options, see Settings section below.

Shorthand notation

viewportUtils.inViewportLeft(elem);
viewportUtils.inViewportTop(elem);

These will check for the matching side, with default settings

Browser Support

• IE 8+
• All the others except Opera Mini
  • Tested in the latest stable Chrome, Firefox, Safari, and IE
  • No "new" JavaScript or quirky techniques are employed so it should work in all other modern browsers not specifically mentioned above

License

MIT © Tony Samperi

This library is free, open source, and GPL friendly. You can use it for commercial projects, open source projects, or really almost whatever you want.

Attribution is required by MIT, SIL OLF, and CC BY licenses. Downloaded files already contain embedded comments with sufficient attribution, so you shouldn't need to do anything additional when using these files normally.

Author

Tony Samperi, tonysamperi.github.io