In this article, we will learn about all three clauses of try catch finally in JavaScript with examples that will cover almost all cases. The try…catch statement consists of a try block, which contains one or more statements. The body {} of try…catch statement is required and must always be used, even for single statements.
In this article, we will talk about JavaScript Dynamic Import that introduced in ES10/2019, we will cover basics and different types of examples also we will take a look at static and Dynamic Import in JavaScript. And don’t worry I’m not going to give you a long lecture, we will cover this with small points
We can use JavaScript matchAll method on any string and it returns all the matching results as an iterator that works easily with for…of loops and has properties like index, input and groups. It will return an empty iterator object if nothing matched. Simple Example As I said before JavaScript matchAll method will return an iterator of
JavaScript flatMap method is basically a combination of map() and flat() method with the depth of 1, flatMap() method first maps each element using a mapping function, then flattens the result into a new array. This method is quite useful, as merging both methods into one method is a little more efficient. Also, read Guide to
The rest parameter syntax or Rest Operator in JavaScript allows us to handle the infinite number of parameters as an array. Basically, It improved the way of handling parameters of the function. Basic Example In the above example of the Rest Operator in JavaScript, we created the function called fun and receiving the arr parameter
This is an advance guide of JavaScript Arrow Function and If you directly visited this page so I’ll suggest you first read part 1 here. Let’s continue, #4 This Keyword #4.1 No separate this Every function in Javascript defined its own this value, but that’s the beauty of arrow function it doesn’t do that. Let’s understand
An Arrow Function in JavaScript also called a “Fat arrow” function is a syntactically compact alternative to a regular function expression. It allows us to write shorter function syntax. Arrow functions are anonymous and change the way this binds in functions. Arrow functions doesn’t support its own bindings to the this, arguments, super, or new.target
JavaScript includes method is very handy when you need to search or find something in the array or string, yes it works on both. It returns the Boolean value true if the array contains the value and false if not, and the same applied to the strings. Note: When comparing strings and characters JavaScript includes
The JavaScript array forEach method accepts the callback method and executes it once for each element of the array, in order to skip non-existent entries in sparse arrays. Here is a quick and simple example. Although I only used one argument above. But, it takes three arguments: The value of each entry, the index of
Swapping two variables normally requires a temporary variable or XOR swap algorithm as shown in example #2. We will learn two types of condition and 5 types of methods of swapping two variables in JavaScript. 1. #2 and #3 examples are valid if the variable is a type of number 2. And the rest of the
