JavaScriptSource

When you are assigning keys to an object, if the key is the same name as the variable that holds the value you want to assign you can omit the value assignment altogether. This prevents you from having to repeat yourself, something we all hate doing. Let’s take a look at an example using some […]

Creates a new array with n elements removed from the right. Source https://www.30secondsofcode.org/js/s/drop-right

Call the append() method on the reference node, and pass in the new node as an argument. Source https://vanillajstoolkit.com/reference/dom-injection/element-append/

Assigning variables from an array one-by-one is time consuming and silly. Just use destructuring assignment to accomplish this quicker and easier: Source https://levelup.gitconnected.com/6-javascript-code-snippets-for-solving-common-problems-33deb6cacef3

Finds the last n elements for which the provided function returns a truthy value. Use a for loop to execute the provided matcher for each element of arr. Use Array.prototype.unshift() to prepend elements to the results array and return them if its length is equal to n. Source https://www.30secondsofcode.org/js/s/find-last-n

Call the prepend() method on the reference node, and pass in the new node as an argument. Source https://vanillajstoolkit.com/reference/dom-injection/element-prepend/

If you have a large array of data and want to filter out items based on a specific condition then you can simply use the filter function. In this example we have an array of file paths. Some files are in ‘dir1’ while others are in ‘dir2’. Let’s say we want to filter for only a specific directory: Filtering for […]

Insert an element in the DOM after another one. Call the after() method on the reference node, and pass in the new node as an argument. Source https://vanillajstoolkit.com/reference/dom-injection/element-after/

Sometimes your data structure might be a complex object that contains a bunch of key/value pairs. Iterating over each pair is a little odd at first glance depending on what languages you’re used to but its straightforward once you get used to using the functions of Object. After you grab the objects keys you can loop […]