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

Error handling with try-catch

By wrapping code that can fail in try-catch, we can react to and recover from any errors that happen.

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JavaScript

Accessing object properties with bracket notation

We can’t access object properties using dot notation if the property name is dynamic. In those situations, we can use bracket notation instead.

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JavaScript

Splitting strings

When splitting strings, the sequence of characters we split at does not appear in the result. We can get all letters by splitting at the empty string.

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JavaScript

Omitting optional else-branches

When the if-branch already returns, we can omit the keyword else. The execution will only go beyond the if-branch if it doesn’t apply anyways.

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JavaScript

Passing parameters as a single object

Instead of passing a list of parameters to a function, we can pass it an object. That way, we have to explicitly label each parameter we pass to it.

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JavaScript

Implicit return in arrow functions

If an arrow function immediately returns a value, we don’t have to write the return keyword. The function will still implicitly return that value.

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JavaScript

Hiding repetition with helper functions

We can hide the repetition in a function’s parameters in a higher-order function.

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JavaScript

Interpolation in template literals

Template literals allow us to put the values of variables, the results of calculations, and even return values of function calls into strings.

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