Let's get started.
Let's see what it looks like to embed a variable into a string and display the value as part of it.
The code above would print to the console the string created above using the template literal and the variable above it; the output of this code can be seen below.
Before template literals were introduced, embedding values into a string was more arduous and also suffered from limitations. Consider the following code below.
This example would result in the same output as the code above.
Interpolation using template literals allows developers to embed expressions into strings, facilitating a way to create strings that can perform on-the-fly expressions within the string.
The code above uses two fundamental concepts together to create robust interpolation. The first thing to consider is using backticks to declare the string, which dictates that this string is a template literal. The second is the use of the mathematic equation wrapped in curly braces with a dollar sign in front.
The code above is the syntax used to interpolate a value or expression into a string; using this syntax, and you can embed almost anything into a string.
You can also add variables together on the fly instead of static values, further expanding the usefulness of interpolation.
The code above creates a very powerful string that can provide a dynamic way to perform an equation and a message about it to the user. The output of the code above can be seen below.
String interpolation can be a powerful tool for your software development process and provide dynamic ways to create messages for your users. But that isn't the only way you can use them. You can also use them to develop valuable messages for developers too.