https://github.com/andrewjbateman/javascript-click-drag

:clipboard: Javascript30 tutorial 27 of 30 to click and drag on a html page
https://github.com/andrewjbateman/javascript-click-drag

css html javascript javascript30 tutorial-code

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:clipboard: Javascript30 tutorial 27 of 30 to click and drag on a html page

• Host: GitHub
• URL: https://github.com/andrewjbateman/javascript-click-drag
• Owner: AndrewJBateman
• Created: 2018-11-26T21:14:24.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2022-03-21T14:58:56.000Z (about 4 years ago)
• Last Synced: 2024-12-27T02:45:01.964Z (over 1 year ago)
• Topics: css, html, javascript, javascript30, tutorial-code
• Language: CSS
• Homepage:
• Size: 1020 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# :zap: Javascript Click Drag

* Wes Bos Youtube Tutorial: [JavaScript Interface Challenge: Click and Drag to Scroll - #JavaScript30 27/30](https://www.youtube.com/watch?v=C9EWifQ5xqA&index=27&list=PLu8EoSxDXHP6CGK4YVJhL_VWetA865GOH).

* **Note:** to open web links in a new window use: _ctrl+click on link_

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## :page_facing_up: Table of contents

* [:zap: Javascript Click Drag](#zap-javascript-click-drag)

  * [:page_facing_up: Table of contents](#page_facing_up-table-of-contents)

  * [:books: General info](#books-general-info)

  * [:camera: Screenshots](#camera-screenshots)

  * [:signal_strength: Technologies](#signal_strength-technologies)

  * [:floppy_disk: Setup](#floppy_disk-setup)

  * [:computer: Code Examples](#computer-code-examples)

  * [:cool: Features](#cool-features)

  * [:clipboard: Status & To-Do List](#clipboard-status--to-do-list)

  * [:clap: Inspiration](#clap-inspiration)

  * [:file_folder: License](#file_folder-license)

  * [:envelope: Contact](#envelope-contact)

## :books: General info

* Tutorial Code to scroll horizontally using click and drag.

## :camera: Screenshots

![Example screenshot](./img/drag.png).

## :signal_strength: Technologies

* [Javascript v1.9 ECMA-262 ECMAScript 2018](http://www.ecma-international.org/publications/standards/Ecma-262.htm)

## :floppy_disk: Setup

* Open `index.html` in browser. If any code is changed the browser needs to be refreshed.

## :computer: Code Examples

* calculate slider scroll left value from cursor position

```javascript

slider.addEventListener('mousemove', (e) => {

  if (!isDown) return; //stop the function from running

  console.log(isDown);

  e.preventDefault(); // prevent selection of text etc inside area.

  const x = e.pageX - slider.offsetLeft;

  const scrollMultiple = 3; // scroll 3 pixels for each pixel moved by the mouse.

  const walk = (x - startX)*scrollMultiple;

  slider.scrollLeft = scrollLeft - walk;

  console.log('slider scrollleft', slider.scrollLeft); //max value 4207.2001953125

});

```

## :cool: Features

* Scroll speed can be changed.

## :clipboard: Status & To-Do List

* Status: Working

* To-Do: Nothing

## :clap: Inspiration

* Wes Bos Youtube Tutorial: [JavaScript Interface Challenge: Click and Drag to Scroll - #JavaScript30 27/30](https://www.youtube.com/watch?v=C9EWifQ5xqA&index=27&list=PLu8EoSxDXHP6CGK4YVJhL_VWetA865GOH).

## :file_folder: License

* This project is licensed under the terms of the MIT license.

## :envelope: Contact

* Repo created by [ABateman](https://github.com/AndrewJBateman), email: gomezbateman@yahoo.com