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Please enable JavaScript in your browser settings or update your browser.Challenge: Array Element Accessor | Mastering Arrays
JavaScript Data Structures
course content

Course Content

JavaScript Data Structures

JavaScript Data Structures

1. Introduction and Prerequisites
Introduction to the CoursePrerequisites for the CourseWhat Will Be CoveredTips for Success
2. Objects Fundamentals
Understanding ObjectsObject CreationNested PropertiesChallenge: Creating an ObjectAccessing Object PropertiesChallenge: Accessing Object PropertiesWorking with PropertiesChallenge: Modifying and Extending ObjectObject MethodsProperties in MethodsChallenge: Working with Object MethodsObject Fundamentals Sum Up
3. Advanced Object Manipulation
Object Iteration with for...in LoopChallenge: Object Property ExplorerMethod hasOwnProperty()Challenge: hasOwnProperty() for Object Property IterationSpread OperatorChallenge: Merging Objects and Adding PropertiesObject DestructuringChallenge: DestructuringAdvanced Object Manipulation Sum Up
4. Mastering Arrays
Understanding ArraysChallenge: Array Element AccessorWorking with Array ElementsChallenge: Array Element Modifierfor LoopChallenge: Array Element Iterationfor...of LoopChallenge: Iteration with for...ofMastering Arrays Sum Up
5. Advanced Array Operations
map() MethodChallenge: Array Element Transformationfilter() MethodChallenge: Filtering Students by Exam Scoresfind() MethodChallenge: Discovering Featured Productssort() MethodChallenge: Sorting and Extracting PropertiesAdvanced Array Operations Sum UpCourse Sum Up

bookChallenge: Array Element Accessor

Task

  1. Create an array called stars with the following star names:
    • "Sirius";
    • "Alpha Centauri";
    • "Betelgeuse";
    • "Polaris".
  2. Log individual star names using different indices (0, 1, 2, and 3) using console.log

              
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const stars = ___;

console.log("First element:", ___); // Output: Sirius
console.log("Second element:", ___); // Output: Alpha Centauri
console.log("Third element:", ___); // Output: Betelgeuse
console.log("Forth element:", ___); // Output: Polaris
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Expected output:

  1. Use square brackets [] to create an array.
  2. Separate each element with the comma ,.
  3. Use console.log() to log the value of the array element at the specified index.

              
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const stars = ["Sirius", "Alpha Centauri", "Betelgeuse", "Polaris"];

console.log("First element:", stars[0]); // Output: Sirius
console.log("Second element:", stars[1]); // Output: Alpha Centauri
console.log("Third element:", stars[2]); // Output: Betelgeuse
console.log("Forth element:", stars[3]); // Output: Polaris
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Section 4. Chapter 2
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