Cristian Salcescu in Frontend Essentials

Apr 12, 2021

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How to Know If an Array Has Duplicates in JavaScript

Set collections, equality on objects, the map…

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115

1 response

Cristian Salcescu in Frontend Essentials

Apr 11, 2021

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How to Know If an Array is Not Empty in JavaScript

This short post shows how to check the size of an…

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262

1 response

Cristian Salcescu in Frontend Essentials

Apr 27, 2021

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4 Ways to Create Objects in JavaScript

Object literals, prototypes, classes, factory functions, and…

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72

Cristian Salcescu in Frontend Essentials

Apr 20, 2021

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How to Concatenate All Strings From an Array, The Bad and The Good Way

for loop, the join array…

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58

Cristian Salcescu in Frontend Essentials

Apr 18, 2021

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How to Check If a Property Is Not Null

Using optional chaining and the Boolean function to test for…

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9

Cristian Salcescu in Frontend Essentials

Apr 25, 2021

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How to Know If an Object is Empty or Not

Object.keys, JSON.stringify and more

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102

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Cristian Salcescu in Frontend Essentials

Apr 15, 2021

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How to Convert Values into Strings in JavaScript

The String built-in function, the toString method…

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28

Cristian Salcescu in Frontend Essentials

Apr 26, 2021

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How to Convert a String Into an Array of Characters

The split string method, Unicode characters…

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79

Cristian Salcescu in Frontend Essentials

Apr 29, 2021

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How to (Not) Convert Between Strings and Numbers

Using the built-in Number and String functions

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35

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Cristian Salcescu in Frontend Essentials

Apr 28, 2021

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How to Access and Change a Dynamic Property

Object literal syntax, dot and bracket notation, property…

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11

These were the top 10 stories published by Frontend Essentials in April of 2021. You can also dive into daily archives for April of 2021 by using the calendar at the top of this page.