--- title: "Javascript Tips and Tricks" url: https://daily.dev/posts/javascript-tips-and-tricks-p83urt4he source_url: https://jesssica.hashnode.dev/javascript-tips-and-tricks type: article source: "Hashnode" published: 2021-04-24T16:09:10.933Z updated: 2021-10-07T14:17:10.317Z tags: ["general-programming", "javascript"] reading_time: 3 upvotes: 29 comments: 1 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Javascript Tips and Tricks **[Hashnode](https://daily.dev/sources/hashnode)** · 3 min read · 29 upvotes · 1 comments ## Summary In this post, we will be looking at some popular and must use Javascript Tips and tricks to boost your productivity and write clean code. Getting an array of unique values is probably easier than you think in Javascript, wherein in other programming languages you have to sort the array, then iterate over to copy not duplicate values. To Resize an Array we can simply shorten the length of the array. To merge multiple objects, you can simply use the rest operator. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Community discussion Top comments from developers on daily.dev. **@prashantbhat84** · 0 upvotes > I think you would get an  error as you  have declared array as {} instead of []. ## Similar posts on daily.dev - [Don’t just attend KubeCon \+ CloudNativeCon, Merge Forward your experience\!](https://daily.dev/posts/don-t-just-attend-kubecon-cloudnativecon-merge-forward-your-experience--l0rpp73x8) · CNCF · 0 upvotes · 0 comments - [Announcing H2 2026 KCDs](https://daily.dev/posts/announcing-h2-2026-kcds-m96goajm1) · CNCF · 1 upvotes · 0 comments - [Two months of Open Community Groups](https://daily.dev/posts/two-months-of-open-community-groups-asf52zhbs) · CNCF · 0 upvotes · 0 comments --- Tags: [#general-programming](https://daily.dev/tags/general-programming), [#javascript](https://daily.dev/tags/javascript) [View this post on daily.dev](https://daily.dev/posts/javascript-tips-and-tricks-p83urt4he)