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Key-Value Pairs in JavaScript Objects
JavaScript objects have keys (or properties), and values. Let’s take a look at this JS object example with some keys and values, keys are on the left, values on the right : Now let’s add some additional key value pairs to the object. Here’s one way to do that: So, if you add the above…
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Reversing a string in JavaScript – Explanation
Say you want to reverse a string passed in a JavaScript functionality as below: There are various ways to reverse the string passed above. Let’s look at them and break them down for you to understand. So the first and the most popular method used to achieve the reverse string functionality is using the split-reverse-join…
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The Spread Operator (…) or the three dots in JavaScript
The Spread Operator in JavaScript simply copies all the elements of an array and outputs them to the console. It is represented by … i.e., the three dots. Let’s understand it better using the simple code below: The spread Operator has been around since JavaScript ES6. It helps in extracting properties from old objects or…
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JavaScript Array splice() vs slice() methods
The splice() method is used to add or remove multiple elements in an array. It can add in or remove any number of consecutive elements from anywhere inside the array. It also overwrites the original array. It can take up to three parameters, the third one basically comprising of elements to add to an array.…
