Learning JavaScript tutorial – JavaScript Expressions and Operators
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JavaScript Expressions and Operators are very similar with most popular programming languages like C, C++, or Java. In this chapter we take an overview of the basic building blocks of JavaScript: operators, expressions.
JavaScript Expressions
JavaScript Expression is a combination of values, variables, operators, and functions that are interpreted (evaluated) as per the program logic define(develop) by JavaScript programmer. For example consider mathematical expression: 4+3 is an arithmetic and programming expression which evaluates to 7. The assignment expression x=4+3 also evaluates to 7 and assign that value to variable x. The expression is use to evaluate the the values for pre-define JavaScript program logic.
var intNum; //Expression to declare a variable
var intNum=10; //Expression to declare a variable with assigned initial value
var x=5, y=4, z=x+y; //Expressions to declared multiple variables
JavaScript Operators
JavaScript supports a variety of operators like arithmetic, logical and comparison etc. An operator is a function which acts on any number of operands (inputs) to produce a pre-define operation.
