Larger Expressions in JavaScript
Simple expressions such as literals, variable references, and property accesses can be combined with operators to produce larger expressions.
In JavaScript, you can use operators to combine smaller expressions into larger ones. Here are some examples:
 Arithmetic operators: Arithmetic operators like
+
, 
, *
, /
, and %
(modulo) can be used to combine number literals and variables into larger expressions:
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 let x = 5;
let y = x + 10; // This combines the variable 'x' and the literal '10' into a larger expression.

 String operators: The
+
operator can be used to concatenate strings. It can combine string literals, variables containing strings, and even property accesses:
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5
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 let name = "John";
let greeting = "Hello, " + name + "!"; // This combines literals and a variable into a larger expression.
let person = {
firstName: "John",
lastName: "Doe"
};
let fullName = person.firstName + " " + person.lastName; // This combines property accesses and literals.

 Logical operators: Logical operators like
&&
(and), 
(or), and !
(not) can combine boolean expressions into larger expressions:
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 let x = 5;
let y = 10;
let isInRange = x > 0 && y < 20; // This combines two comparison expressions into a larger logical expression.

 Comparison operators: Comparison operators like
==
, !=
, <
, >
, <=
, and >=
can combine literals and variables into expressions that produce boolean values:
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 let age = 20;
let isAdult = age >= 18; // This combines the variable 'age' and the literal '18' into a larger expression.

 Ternary operator (conditional operator): This operator takes three operands and can be used to make more complex expressions:
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 let age = 20;
let type = age >= 18 ? "Adult" : "Minor"; // This combines the variable 'age', the comparison expression 'age >= 18', and two string literals into a larger expression.

These are just a few examples of how operators can be used to combine smaller expressions into larger expressions in JavaScript. The key is that every expression, no matter how large or small, produces a value, and these values can be used as the inputs to other expressions, forming the building blocks of your JavaScript code.