Intermediate JavaScript Archives https://openjavascript.info/category/intermediate-javascript/ Learn the language of the web. Mon, 05 Dec 2022 10:17:24 +0000 en-US hourly 1 https://wordpress.org/?v=6.4.2 https://openjavascript.info/wp-content/uploads/2023/12/cropped-android-chrome-192x192-1-32x32.png Intermediate JavaScript Archives https://openjavascript.info/category/intermediate-javascript/ 32 32 How to Remove Duplicate Objects from an Array https://openjavascript.info/2022/12/01/how-to-remove-duplicates-from-an-array-of-objects/ https://openjavascript.info/2022/12/01/how-to-remove-duplicates-from-an-array-of-objects/#respond Thu, 01 Dec 2022 09:57:23 +0000 https://openjavascript.info/?p=6197 When deciding which method to choose, object type should be taken into account.

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]]> https://openjavascript.info/2022/12/01/how-to-remove-duplicates-from-an-array-of-objects/feed/ 0 How to Remove Falsy Values from an Array https://openjavascript.info/2022/11/27/remove-falsy-values-from-an-array/ https://openjavascript.info/2022/11/27/remove-falsy-values-from-an-array/#respond Sun, 27 Nov 2022 20:18:31 +0000 https://openjavascript.info/?p=6172 How to remove falsy values or only some falsy values.

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]]> https://openjavascript.info/2022/11/27/remove-falsy-values-from-an-array/feed/ 0 How to check if a property exists in a JavaScript object https://openjavascript.info/2022/10/13/how-to-check-if-a-property-exists-in-a-javascript-object/ https://openjavascript.info/2022/10/13/how-to-check-if-a-property-exists-in-a-javascript-object/#respond Thu, 13 Oct 2022 07:14:06 +0000 https://openjavascript.info/?p=6028 Learn methods for searching an object and its prototype for the existence of properties.

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]]> https://openjavascript.info/2022/10/13/how-to-check-if-a-property-exists-in-a-javascript-object/feed/ 0 Insert an element or HTML block before or after an existing element https://openjavascript.info/2022/09/13/insert-an-element-before-another-in-the-dom-with-javascript/ https://openjavascript.info/2022/09/13/insert-an-element-before-another-in-the-dom-with-javascript/#respond Tue, 13 Sep 2022 08:49:12 +0000 https://openjavascript.info/?p=5720 Using the insertAdjacentElement() or insertAdjacentHTML() methods.

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]]> https://openjavascript.info/2022/09/13/insert-an-element-before-another-in-the-dom-with-javascript/feed/ 0 What’s wrong with using ‘var’ in JavaScript? https://openjavascript.info/2022/08/30/whats-wrong-with-using-var-in-javascript/ https://openjavascript.info/2022/08/30/whats-wrong-with-using-var-in-javascript/#respond Tue, 30 Aug 2022 05:04:19 +0000 https://openjavascript.info/?p=5546 Using 'var' to declare variables can lead to scope leakage and silent errors in your code.

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]]> https://openjavascript.info/2022/08/30/whats-wrong-with-using-var-in-javascript/feed/ 0 Emptying a JavaScript array https://openjavascript.info/2022/04/15/emptying-a-javascript-array/ https://openjavascript.info/2022/04/15/emptying-a-javascript-array/#respond Fri, 15 Apr 2022 13:41:20 +0000 https://openjavascript.info/?p=4001 Emptying an array is easy, but methods vary in their impact on references made to the array in other variables.

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]]> https://openjavascript.info/2022/04/15/emptying-a-javascript-array/feed/ 0 Find the index of an element in a JavaScript array by value https://openjavascript.info/2022/04/14/find-the-index-of-any-element-in-a-javascript-array-by-value/ https://openjavascript.info/2022/04/14/find-the-index-of-any-element-in-a-javascript-array-by-value/#respond Thu, 14 Apr 2022 11:36:34 +0000 https://openjavascript.info/?p=3994 Get the index value of any element in an array by value and instance of its appearance.

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]]> https://openjavascript.info/2022/04/14/find-the-index-of-any-element-in-a-javascript-array-by-value/feed/ 0 Self-executing functions in JavaScript https://openjavascript.info/2022/03/21/self-executing-functions-in-javascript/ https://openjavascript.info/2022/03/21/self-executing-functions-in-javascript/#respond Mon, 21 Mar 2022 06:49:58 +0000 https://openjavascript.info/?p=3549 Self-executing functions are ideal for making a one-time process self-contained.

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]]> https://openjavascript.info/2022/03/21/self-executing-functions-in-javascript/feed/ 0 Higher-order array methods with simple examples: map, filter, sort and reduce https://openjavascript.info/2022/01/03/map-filter-sort-and-reduce-with-simple-examples/ https://openjavascript.info/2022/01/03/map-filter-sort-and-reduce-with-simple-examples/#respond Mon, 03 Jan 2022 12:56:13 +0000 https://openjavascript.info/?p=2363 Use flexible higher-order array methods to help achieve your programming objectives.

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]]> https://openjavascript.info/2022/01/03/map-filter-sort-and-reduce-with-simple-examples/feed/ 0 All you need to know about JavaScript arrow functions https://openjavascript.info/2021/10/01/everything-you-need-to-know-about-javascript-arrow-functions/ https://openjavascript.info/2021/10/01/everything-you-need-to-know-about-javascript-arrow-functions/#respond Fri, 01 Oct 2021 05:55:06 +0000 https://openjavascript.info/?p=1033 Arrow functions use efficient syntax but are best avoided when using "this"

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