Lodash - quick experiments in Chrome DevTools

Want to try out a Lodash method quickly without creating a project? You can inject Lodash into any page using the Chrome DevTools console.

Step 1: Allow JavaScript on the page (if blocked)

If you’re on a page that blocks scripts, navigate to:

1	chrome://settings/content/javascript

And enable JavaScript for that site.

Step 2: Inject Lodash via the console

Open DevTools (Cmd + Option + J on Mac, Ctrl + Shift + J on Windows), then paste:

var el = document.createElement('script');
el.src = "https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.20/lodash.min.js";
el.type = "text/javascript";
document.head.appendChild(el);

Now _ is available in the console.

Step 3: Experiment with Lodash methods

Some useful ones to try:

Remove specific keys from an object:

1	_.omit(obj, ['key1', 'key2'])

Split an array into chunks:

1 2	_.chunk([1, 2, 3, 4, 5], 2) // => [[1, 2], [3, 4], [5]]

Remove elements from an array by index:

1	_.pullAt(array, [0, 2])

Bookmarklet version

Save this as a bookmark to inject Lodash into any page with one click:

1	javascript:var el=document.createElement('script');el.src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.20/lodash.min.js";el.type="text/javascript";document.head.appendChild(el);

Don’t always need Lodash?

Many Lodash methods have native JavaScript equivalents. See:
You Don’t Need Lodash/Underscore