Snippets

These are a collection of tips and tricks you can use to improve the performance and readability of your code.

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JavaScript

Assignment operators shorthand

We commonly increment a number using the += operator. Did you know there are assignment shorthands for other operations as well?

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JavaScript

Removing the largest number from an array

To remove the largest value from an array of numbers we first need to find that number and can then filter it out.

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JavaScript

Sorting arrays by object properties

We can pass an array to JavaScript’s sort function to sort an array of objects by one of their properties.

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JavaScript

Short-circuiting Boolean expressions

As soon as a concatenation of conditions is clear, JavaScript stops the evaluation. It does not do work that does not change the result.

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JavaScript

Quickly removing values from an array

Instead of removing elements from an array one by one, we can modify the array itself to clear it in one operation.

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General

Extracting complex logic to named functions

Putting complex logic into a function increases code readability. By giving that function a descriptive name, it can explain what is happening in it.

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JavaScript

Freezing objects for immutability

We can “freeze” objects to make it impossible to change them after their creation.

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JavaScript

Padding strings

We no longer need to install dependencies to pad a string with characters to the left or right of it.

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