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| Section | Weight | Objectives |
|---|---|---|
| Asynchronous Programming | 13% | - Asynchronous patterns for business requirements - Async/Await syntax - Promises (creation, chaining, error handling) - Event loop and execution flow - Callbacks |
| Debugging and Error Handling | 7% | - Console methods for debugging - Error handling techniques (try/catch/finally) - Custom error types - Breakpoints and code inspection |
| Variables, Types, and Collections | 23% | - JSON parsing and manipulation - Truthy and falsy evaluations - Arrays and collections - Variable declarations and initialization - Strings, numbers, and dates - Primitive and complex data types - Type coercion and conversion |
| Objects, Functions, and Classes | 25% | - Function declarations and expressions - Variable scope and closures - Arrow functions - Modules and decorators - Execution flow and context - Higher-order functions - ES6 classes and inheritance - Prototypal inheritance - Object creation and manipulation |
| Testing | 7% | - Writing and modifying unit tests - Unit testing concepts - Test coverage and reliability - Test effectiveness evaluation |
| Browser and Events | 17% | - DOM manipulation - Browser-specific APIs - Interacting with forms and user input - Browser Developer Tools usage - Event propagation (bubbling and capturing) - Event handling and listeners |
| Server Side JavaScript | 8% | - Package management (npm) - CLI commands - Core Node.js modules - Node.js fundamentals - Server-side JavaScript implementations |
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NEW QUESTION # 135
Given the following code:
Which replacement for the conditional statement on line 02 allows a developer to correctly determine that a button on the page is clicked?
Answer: A
NEW QUESTION # 136
Refer to the code below:
Function Person(firstName, lastName, eyecolor) {
this.firstName =firstName;
this.lastName = lastName;
this.eyeColor = eyeColor;
}
Person.job = 'Developer';
const myFather = new Person('John', 'Doe');
console.log(myFather.job);
What is the output after the code executes?
Answer: C
NEW QUESTION # 137
Which two code snippets showworking examples of a recursivefunction?
Choose 2 answers
Answer: A,C
NEW QUESTION # 138
Refer to the code below:
let car1 = new Promise((_ ,reject)=> setTimeout(reject,2000,"Car1 crashed in")); let car2 = new Promise(resolve => setTimeout(resolve,1500,"Car2 completed")); let car3 = new Promise(resolve => setTimeout(resolve,3000,"Car3 completed")); Promise.race([car1,car2,car3])
.then(value=>{
let result = `${value} the race.`;
}).catch(err=>{
console.log('Race is cancelled.',err);
});
What is the value of result when promise.race execues?
Answer: A
NEW QUESTION # 139
Refer to the code:
Given the code above, which three properties are set pet1?
Choose 3 answers:
Answer: B,D,E
NEW QUESTION # 140
......
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