Answer :
Since you are writing a program in JavaScript, and you notice suggestions for functions appear as you type certain letters or words, this can be attributed to a feature of some editors known as syntax highlighting
What is Syntax highlighting?
Making interactive web pages is possible with JavaScript, a text-based computer language used both on the client-side and server-side.
JavaScript adds interactive aspects to online pages that keep users interested, whereas HTML and CSS are languages that give web pages structure and style.
The color and style of source code displayed in the Visual Studio Code editor depend on the syntax highlighting. It is in charge of coloring JavaScript's if and for keywords differently from strings, comments, and variable names.
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