JScript includes several ways to execute a statement or block of statements repeatedly. In general, repetitive execution is called looping or iteration. An iteration is simply a single execution of a loop. It is typically controlled by a test of a variable, where the value is changed each time the loop is executed. JScript supports four types of loops: for loops, for...in loops, while loops, and do...while loops.

In This Section

for Loops: Discusses how JScript uses for loops and provides some practical examples.

for...in Loops: Describes the concept of for...in loops and explains how to use them in JScript.

while Loops: Discusses the two types of while loops and explains how they differs from for loops.

break and continue Statements: Describes how to use the break and continue statements to override the behavior of a loop.

Related Sections

JScript Conditional Structures: Describes how JScript normally handles program flow and provides links to information that explains how to regulate the flow of a program's execution.

JScript Reference: Lists elements that compose JScript Language Reference and links to topics that explain the details behind the proper use of language elements.