Conteúdo do Curso
Introduction to JavaScript
Introduction to JavaScript
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
5. Looping Through Data in JavaScript
Challenge: Perform Array Operations
Task
Create an array named
myArray
with the given data:["Heine", 25, "Bob", 16]
.Remove the last element,
16
, from the array.Add a new element with the value
21
to the end of the array.Replace the second element with the value
27
using indexing .Print the updated array to the console.
let ___ = ["Heine", 25, "Bob", 16]; myArray.___(); myArray.___(21); myArray[___] = 27; console.log(___);
The output should be :
python
Use the
pop()
method to remove an element from the end of an array.Use the
push()
method to add an element to the end of an array.Access the second element in the array using the index
1
.To log the array data to the console, use the
console.log()
with the array name.
let myArray = ["Heine", 25, "Bob", 16]; // Step 1 myArray.pop(); // Step 2 myArray.push(21); // Step 3 myArray[1] = 27; // Step 4 console.log(myArray); // Step 5
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Seção 2. Capítulo 8