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Salesforce JS-Dev-101 Exam Syllabus Topics:

Section	Weight	Objectives
Objects, Functions, and Classes	25%	- ES6 classes, inheritance, modules, decorators - Function types, scope, closures, arrow functions - Object creation, properties, prototypes
Debugging and Error Handling	7%	- Error types and handling strategies - Console usage, breakpoints and debugging techniques
Asynchronous Programming	13%	- Event loop and execution flow - Callbacks, promises, async/await
Testing	7%	- Test coverage and improvement - Unit test structure and effectiveness
Server Side JavaScript	8%	- Node.js fundamentals and core modules - Package management and CLI tools
Variables, Types, and Collections	23%	- Variable declaration and scope - Strings, numbers, dates, arrays and methods - JSON parsing and manipulation - Data types, type coercion, truthy/falsy values
Browser and Events	17%	- Browser APIs and developer tools - Event handling, propagation, listeners - DOM selection and manipulation

>> Latest JS-Dev-101 Questions <<

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Salesforce Certified JavaScript Developer - Multiple Choice Sample Questions (Q95-Q100):

NEW QUESTION # 95
Given the following code:

What will be the first four numbers logged?

A. 0123
B. 0112
C. 0012
D. 0122

Answer: D

NEW QUESTION # 96
In the browser, the window object is often used to assign variables that require the broadest scope in an application Node.js application does not have access to the window object by default.
Which two methods areused to address this ?
Choose 2 answers

A. Create a new window object in the root file.
B. Assign variables to the global object.
C. Use the document object instead of the window object.
D. Assign variables to module.exports and require them as needed.

Answer: B

NEW QUESTION # 97
Refer tofollowing code:
class Vehicle {
constructor(plate) {
This.plate =plate;
}
}
Class Truck extends Vehicle {
constructor(plate, weight) {
//Missing code
This.weight = weight;
}
displayWeight() {
console.log('The truck ${this.plate} has a weight of${this.weight} lb.');}} Let myTruck = new Truck('123AB', 5000); myTruck.displayWeight(); Which statement should be added to line 09 for the code to display 'The truck 123AB has a weight of 5000lb.'?

A. Vehicle.plate = plate;
B. super(plate);
C. Super.plate =plate;
D. This.plate =plate;

Answer: B

NEW QUESTION # 98
Which three browser specific APIs are available for developers to persist data between page loads ?
Choose 3 answers

A. IIFEs
B. Global variables
C. indexedDB
D. Cookies
E. localStorage.

Answer: A,C,E

NEW QUESTION # 99
A developer is setting up a Node,js server and is creating a script at the root of the source code, index,js, that will start the server when executed. The developer declares a variable that needsthe folder location that the code executes from.
Which global variable can be used in the script?

A. _dirname
B. this.path
C. window.location
D. _filename

Answer: D

NEW QUESTION # 100
......

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