what is a statement in javascript code example

Example 1: javascript statement

// STATEMENT: Code that performs actions (generally something that ends in ";"
// example:
const str = `String assigned to str`;

// EXPRESSION: Code that produces a value
// example(s):
3 + 4
1991
true && false && false

Example 2: statement javascript

JavaScript statements are composed of Expressions.
All expressions are statements composed of Expressions. 
A statement is a bunch of statments but 
statements are not a bunch of statements.
Some statements are not really statements.