Miscellaneous

Iterating through an array of objects to find a specific one.

Create a sortable list whose items can be dragged and dropped inside it.

Convert a string into an array by splitting it after a specific character (or characters).

Use RegExp.prototype.test() with an appropriate regular expression to check if the given string contains any whitespace characters.

The replace() method accepts two arguments: the string to find, and the string to replace it with.

Use String.toLowerCase() to transform all text in a string to lowercase.

Instead of using the indexOf() method to check if an element is in the array, you can use the includes() method.

Use Array.prototype.slice(0, -1) to return all but the last element of the array.

This post demonstrates a common case where we show a loading indicator while an iframe is being loaded.

Remove leading and trailing whitespace from a string.