Introduction to JavaScript – Variables: String Interpolation II
In the newest version of JavaScript (ES6) we can insert variables into strings with ease, by doing two things:
1) Instead of using quotes around the string, use backticks (this key is usually located on the top of your keyboard, left of the 1 key (see images below).
Backtick key on most keyboards.
Backtick key on Mac Keyboard
2) Wrap your variable with ${myVariable}, followed by a sentence. No +s necessary.
ES6 string interpolation is easier than the method you used in our last exercise.
With ES6 interpolation we can insert variables directly into our text.
It looks like this:
let myPet = 'armadillo'
console.log(`I own a pet ${myPet}.`) //Since ES6, you can just do this.
// Output: 'I own a pet armadillo.'
The resulting string is:
I own a pet armadillo.
In the example above, the backticks ( ` ) wrap the entire string. The variable (myPet) is inserted using ${}.
Review: In computer programming, string interpolation (or variable interpolation, variable substitution, or variable expansion) is the process of evaluating a string literal containing one or more placeholders, yielding a result in which the placeholders are replaced with their corresponding values.
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