I'm having trouble using mixpanel.track_links with links added dynamically (after page load).
For a general example, given this page:
<div id="link-div"></div>
<input type="button" id="add-link" />
<script type="text/javascript">
mixpanel.track_links(".mixpanel-event", "event name", function(ele) { return { "type": $(ele).attr("type")}});
</script>
At some user action, links are added to the page using jquery. For example:
$('#add-link).click(function() {
$('#link-div').html('<a class="mixpanel-event" type="event-type" href="#>Link to track</a>');
})
The problem is that track_links isn't triggered on click of the newly created link. I'm hoping someone can share their experience in enabling the track_link function to work for dynamically added links.
I was curious so I checked out their code and went ahead and did as they suggested. I tested it, and it worked fine. This requires jQuery though.
Example usage: mixpanel.delegate_links(document.body, 'a', 'clicked link');
// with jQuery and mixpanel
mixpanel.delegate_links = function (parent, selector, event_name, properties) {
properties = properties || {};
parent = parent || document.body;
parent = $(parent);
parent.on('click', selector, function (event) {
var new_tab = event.which === 2 || event.metaKey || event.target.target === '_blank';
properties.url = event.target.href;
function callback() {
if (new_tab) {
return;
}
window.location = properties.url;
}
if (!new_tab) {
event.preventDefault();
setTimeout(callback, 300);
}
mixpanel.track(event_name, properties, callback);
});
};
I had a somewhat hard time trying to get tracking links working as expected on react. The main caveat I noticed was that duplicated events may be sent to mixpanel in bursts. I used a slightly modified version of @Kyle to solve my problem. Additionally, this accounts for properties
being possibly a function as supported by the mixpanel API.
// mixpanelSetup.js
import md5 from "md5";
const setup = () => {
mixpanel.init(TOKEN);
// Sets ensure unique items
mixpanel.delegated_links = new Set();
mixpanel.delegate_links = (parent, selector, eventName, eventProperties, {ignoreUrl=false}) => {
// Hash by whatever thing(s) the use case considers 'unique' (e.g md5(`${selector}__${eventName}`))
const linkHash = md5(selector);
parent = parent || document.body;
parent = $(parent);
// Do not add additional trackers for an already tracked event.
if (mixpanel.delegated_links.has(linkHash)) {
return;
}
mixpanel.delegated_links.add(linkHash);
parent.on("click", selector, (event) => {
const newTab = event.which === 2 || event.metaKey || event.target.target === "_blank";
if (typeof eventProperties === "function") {
eventProperties = eventProperties(event.target) || {};
}
eventProperties.url = event.target.href;
// In case we don't want the url on the properties.
if (ignoreUrl) {
delete eventProperties.url;
}
const callback = () => {
if (newTab) {
return;
}
window.location = event.target.href;
};
if (!newTab) {
event.preventDefault();
setTimeout(callback, 300);
}
console.debug("Tracking link click!");
mixpanel.track(eventName, eventProperties, callback);
});
};
}
And can be used as:
// MyComponent.jsx
import React, { useEffect } from "react";
import { Link, useLocation } from "@reach/router";
const MyComponent = ({ moduleName, key, ...props }) => {
const id = `#${id}__${moduleName}`;
useEffect(() => {
mixpanel.delegate_links(document.parent, id, event => {
return {
module: event.id.split("__").pop(),
...props.otherPropsToTrack
};
})
}, [])
return <>
<Link {...props} to="/some/path" id={id}>My Page</Link>
</>
}
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