Donleeve NPM | npm.io

Donleeve

Allows you to perform an action when your website visitor is about to leave (exit intent). Even on mobile. Uses localStorage to prevent the action from occurring too often.

Installation

npm install donleeve

git clone https://github.com/hdodov/donleeve

Dependencies

The first several seconds of a user's visit are crucial and it would be bad if you pissed him off with an exit intent modal that was triggered by a false positive. That's why the event listeners who watch the user's behavior are bound after a set delay.

However, your user might have opened your site in a new tab for later reading. In that case, the bind delay would be useless and would pass while the user was inactive.

That's why this library is used. It allows you to invoke a function after a set amount of active time. That is, time that passed while the user was viewing the page.

Blocking

For better user experience, there are two types of blocking that can prevent the exit intent action from happening even if the conditions are met.

Flag blocking

This is a short-term block. When the user sees the exit intent for the first time, the Donleeve.acted flag is raised. If ignoreFlagBlocking in the options is not enabled, the visitor won't be seeing any exit intents until he refreshes the page.

Storage blocking

This is a long-term block that utilizes localStorage. It's an array of objects with two values inside:

Regex string. Controls which pages a block affects. If the regex matched the current URL it will block the current page. If not, this block will be ignored. The default value is * and blocks all pages.
UNIX timestamp. Defines a point in the future until which this block is going to be active.

Example

If an exit intent is triggered on a page with storageBlockingRegex set to \\?para\\=[0-9] and storageBlockingMinutes set to 10, something like this would be created:

["\\?para\\=[0-9]", 1501680075442]

When Donleeve tries to emit the onAction event, it would check all listed blocks that have their specified regex match the current URL. If a block matches it and its time is greater than Date.now(), the action would be blocked. After 10 minutes have passed since the block's creation, the block will be obsolete.

API

Properties

Donleeve.options    // The configuration object.
Donleeve.enabled    // Set to `false` to disable Donleeve.
Donleeve.acted      // Whether the exit intent action fired on this page visit.

Methods

/**
 * Loops through all the keys of an object and saves them in `_conf`.
 * @param {object} options
 */
Donleeve.setOptions(options)

/**
 * Optionally configures the library, gives it an action callback and binds
 * the exit intent triggers after the initial bind delay.
 * @param  {object}   config   Optional configuration object used to modify
 *                             `_conf`.
 * @param  {function} callback Function to call when the exit intent must be
 *                             activated.
 */
Donleeve.init(config, callback)

/**
 * This function gives you the ability to remove old storage blocks. For
 * example, if you set a block for 2 weeks and later decide to reduce it to
 * 5 minutes, any visitor who came while the block was 2 weeks will have to
 * wait for it to pass.
 *
 * With this function, you can pass a string that is saved in the storage.
 * If its new value differs from the old one, the blocks are purged.
 *
 * Back to our example. You release version 1 of your site with the 2 week
 * block and pass "v1" to this function. It is saved. Then, when you release
 * version 2 with the 5 minute block, you pass "v2" to this function. It
 * notices the difference and clears the previous blocks.
 * @param  {string} purge The purge string.
 */
Donleeve.purgeBlocks(purge)

Events

// Fired after the user tracking events have been attached.
Donleeve.onBound

// Fired when any event triggered and met the exit intent condition.
// Receives one argument - the DOM event that was triggered.
Donleeve.onTrigger 

// Fired when the action was blocked by localStorage.
// Receives two arguments - the regex string used to check the URL, the time remaining on the block.
Donleeve.onStorageBlock 

// The main action callback. Set via `init()`.
// Receives one argument - the DOM event that triggered the action.
Donleeve.onAction

Options

bindDelay               // Time to wait before binding the user tracking events.
bindEventBlur           // Whether to use the "onblur" event.
bindEventMouseLeave     // Whether to use the "onmouseleave" event.
bindEventMouseMove      // Whether to use the "onmousemove" event.
storageBlockingRegex    // What blocking regex to apply on this page. Default is "*" and blocks on all URLs.
storageBlockingMinutes  // For how many minutes the storage block lasts.
ignoreStorageBlocking   // Whether to ignore storage blocks.
ignoreFlagBlocking      // Whether to fire the action once per page visit. `Donleeve.acted` is the flag.

Usage

Start by including active-timeout.js and Donleeve in your page:

<script src="node_modules/active-timeout.js/dist/active-timeout.min.js"></script>
<script src="node_modules/donleeve/dist/donleeve.min.js"></script>

After that, initialize Donleeve:

Donleeve.init({
    bindDelay: 2000
}, function (e) {
    alert("STAY ON MY PAGE, PLEASE.");
});

Note: If you couldn't do your exit intent action for some reason, you can return false in the callback function to make Donleeve act as if nothing happened and add no blocks.