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Introduction to JavaScript
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Course Content

Introduction to JavaScript

Introduction to JavaScript

1. JavaScript Fundamentals
About JavaScriptUnderstanding JavaScript SyntaxChallenge: Console Output in JavaScriptUsing Comments to Document CodeChallenge: Write a Single-Line CommentChallenge: Write a Multi-Line Comment
2. Variables and Data Types in JavaScript
Understanding Variables in JavaScriptChallenge: Define the VariableUsing const for ConstantsExploring JavaScript Data TypesWorking with null in JavaScriptIntroduction to ArraysArray Methods and ManipulationChallenge: Perform Array Operations
3. Performing Operations in JavaScript
Understanding Assignment OperatorsMathematical Operations in JavaScriptAssignment Operators in JavaScriptIncrement and Decrement OperatorsChallenge: Variable Operations PracticeComparison Operators in JavaScriptLogical Operators ExplainedChallenge: Compare Variables in JavaScriptConcatenating Strings in JavaScriptChallenge: Build Sentences with JavaScript
4. Controlling Program Flow with Conditional Statements
Mastering if Statements in JavaScriptUsing else for Alternative OutcomesApplying else if for Multiple ConditionsChallenge: Determine Sizes with Conditionals
5. Looping Through Data in JavaScript
Understanding the while Loop in JavaScriptUsing the do while Loop for IterationChallenge: Print Numbers from 5 to 9Mastering the for Loop in JavaScriptChallenge: Console Tigers with LoopsBreaking Out of Loops with breakSkipping Iterations with continueChallenge: Stop and Skip in Loops
6. Functions in JavaScript
What Are Functions in JavaScript?Defining Functions in JavaScriptChallenge: Write a Function – My NameUsing Function Arguments EffectivelyReturning Values from FunctionsChallenge: Create a Sum FunctionCourse Summary & Next Steps

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Skipping Iterations with continue

The continue keyword allows you to skip the remaining code within a loop for the current iteration and proceed to the next iteration.

Example 1: Skipping Early Iterations


              
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for (let i = 0; i < 10; i++) {
  if (i < 5) {
    continue;
  }

  console.log("i =", i);
}
copy

In this example, the continue keyword is used to skip iterations of the loop where i is less than 5. As a result, only iterations with i values in the range [5, 9] execute the code inside the loop.

Example 2: Skipping a Specific Iteration


              
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for (let i = 1; i <= 5; i++) {
  console.log("Iteration started:", i);  

  if (i == 3) {
    continue;  // Skip the end of the 3rd iteration
  }

  console.log("- Iteration ended:", i);
}
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Here, the continue statement is used to skip the end of the 3rd iteration, resulting in the output of "Iteration started" and "Iteration ended" messages for all iterations except the one where i equals 3.

Note

The continue keyword works similarly to break, but instead of terminating the loop entirely, it only skips the current iteration and proceeds with the next one. This behavior can be handy for fine-grained control of loop execution.

question mark

You are printing a list of registered usernames but want to skip the ones that are marked as "BANNED". What will the following code print?

Select the correct answer

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Section 5. Chapter 7
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