What Concatenation is in JavaScript

What Concatenation is in JavaScript

In JavaScript, concatenation is the process of joining two or more strings together into a single string. The most commonly used operator for concatenation is the plus sign (+).

Here is an example of concatenating two strings:

In the example above, we declared two variables str1 and str2 which contain the strings "Hello" and "World" respectively. We then used the plus operator to concatenate the two strings and added a space between them. The result of the concatenation is "Hello World" which is stored in the result variable.

We can also use concatenation to combine strings with other data types. Here is an example:

In the example above, we declared a variable num which contains the number 42. We then declared a variable str and used the plus operator to concatenate the string "The answer is: " with the num variable. The result is "The answer is: 42".

Concatenation can also be used to join an array of strings into a single string. Here is an example:

In the example above, we declared an array arr containing three strings. We then used the join() method to concatenate the strings together with a comma and a space. The resulting string is "apple, banana, orange".

Note that concatenation can be an expensive operation, especially when dealing with large strings. In such cases, it is recommended to use other methods such as template literals or array join() method.

That's it for JavaScript Concatenation. Thanks ❤️

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