Jquery Array of all selected checkboxes (by class)

Advanced methods and elephant traps

The .each() function: When precision matters

.map() is a sleek and efficient tool. However, for greater control or conditional logic within your loop, you can turn to .each():

// Wisdom elf🧝‍♂️ says: Use .each() for customizable adventures
var checkedValues = [];
$('.my-checkbox:checked').each(function() {
  checkedValues.push(this.value);
});


Checkbox haiku: Handling checkboxes without values

Sometimes checkboxes do not have a value attribute. Here's how you handle that, with a default value to catch these little buggers:

// Bennie the default value is here😎: There's no escape, check all checkboxes!
var checkedValues = $('.my-checkbox:checked').map((_, el) => $(el).attr('value') || 'default').get();
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Dealing with dynamism: The lurking dragons

In a dynamic world where checkboxes might appear after the page has loaded, delegate events like a pro:

// Knight's command: Challenge all lurker checkboxes added later🛡
$(document).on('change', '.my-checkbox', function() {
  // Your code to army up new checkboxes
});


March of the visualizers

Here's a visualization to demystify how to select checkboxes with a certain class:

// Meet your loyal soldiers ready for battle⚔
$('.checkbox-class:checked').toArray();


Here's our HTML army formation:

[🪖🗹, 🪖, 🪖🗹, 🧝‍♀️, 🧝‍♀️🗹, 🐉]

Post-battle report:

Surviving fighters: [🪖🗹, 🪖🗹, 🧝‍♀️🗹]

To sum up, jQuery handpicks the finest, checked combatants from your army.

Delving deeper: Edge cases and performance hacks

Jumbo forms? Here's the giant slayer

Huge forms can be a clumsy, stomping giant. Smite them down with some performance optimization:

// Giant Slayer Scroll: No giants are too big🪓
var $checkboxes = $('.my-checkbox');
var checkedValues = $checkboxes.filter(':checked').map((_, el) => el.value).get();


Chaining: A double-edged sword

jQuery method chaining might look masterful, but beware, it can cripple performance:

// Blacksmith advice: Don't forge swords too long, it might get heavy⚔️💨
var checkedValues = $('.my-checkbox').filter(':checked').map((_, el) => el.value).get();


The Underscore.js sidekick

Sworn libraries like underscore.js can provide a refreshing way to solve challenges:

// Underscore.js sings: Why work hard when you can work smart?😉🎻
var checkedValues = _.map($('.my-checkbox:checked'), (el) => el.value);
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