Here’s a list of all string methods in JavaScript. All methods have an example or two that demonstrate how to use that particular method. Length To get the length of a string in JavaScript, you need to access the length property of a string. Notice that the length is not a method! However, because many […]
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In JavaScript, objects are reference values. This means you cannot use the assignment operator (=) to clone objects. If you do, you are just creating an alias for the existing object. To clone a JavaScript object correctly, you have 4 different options: Here is a quick example of each approach: Important: But how do these
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In JavaScript, you can use the built-in Array.forEach() method to act upon each element in the array. For instance, given an array of numbers, let’s print all the values one number at a time: Output: The forEach() method does not create a new array. Instead, it just operates for each element. If you want to
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To learn JavaScript or any other programming language, the number one thing you must do is write a lot of code. Learning JavaScript is not possible without loads of repetition and consistent practice. This guide teaches you how to learn JavaScript fast. Of course, you can become a proficient self-taught JavaScript developer at your own
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To add a reusable Gutenberg block to the desired location in a WordPress post using JavaScript: For example, to add a paragraph in a blog post using JavaScript, run this piece of code: This example adds a new paragraph below any block you have selected in the post editor in WordPress. Detailed Description You may
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In JavaScript, there are three types of popup boxes: Here is the syntax for using each of them: This is a complete guide to popups in JavaScript. You will learn how and why to use the three different popup types in JavaScript. The guide shows you simple and illustrative examples. JavaScript Popup Modals Here is
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The difference between undefined and undeclared variables in JavaScript is: This is a comprehensive guide to understanding the differences between undefined and undeclared in JavaScript. Examples The best way to understand the difference between undefined and undeclared in JavaScript is by having a look at examples. Example 1: Undefined Variable To see an example of
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To limit decimal places in JavaScript, use the toFixed() method by specifying the number of decimal places. This method: For instance, let’s round to 2 decimals: Output: But this is just one way to do it. Also, it has some caveats. This is a comprehensive guide to rounding values in JavaScript. You will learn how
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This quick guide teaches you how to loop through a table of URLs and put the URLs into an array of strings using JavaScript. Here’s a piece of code that loops through a table of URLs on an HTML table of a webpage’s sitemap. It turns the table of URLs into an array of strings
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JSON is a popular text-based data format that is used to transmit data in network requests. JSON has an easy-to-read syntax and it’s a lightweight data format. This is what makes JSON such a favorable data format. As a web developer, dealing with JSON is almost impossible to avoid. When dealing with JSON, one of
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