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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Variables, Types, and Collections | 23% | - Variable declarations and initialization - Truthy and falsy evaluations - Primitive and complex data types - Strings, numbers, and dates - Type coercion and conversion - Arrays and collections - JSON parsing and manipulation |
| Topic 2: Asynchronous Programming | 13% | - Asynchronous patterns for business requirements - Event loop and execution flow - Callbacks - Async/Await syntax - Promises (creation, chaining, error handling) |
| Topic 3: Testing | 7% | - Writing and modifying unit tests - Test effectiveness evaluation - Unit testing concepts - Test coverage and reliability |
| Topic 4: Browser and Events | 17% | - Interacting with forms and user input - Event handling and listeners - DOM manipulation - Browser Developer Tools usage - Event propagation (bubbling and capturing) - Browser-specific APIs |
| Topic 5: Server Side JavaScript | 8% | - Server-side JavaScript implementations - CLI commands - Node.js fundamentals - Core Node.js modules - Package management (npm) |
| Topic 6: Objects, Functions, and Classes | 25% | - ES6 classes and inheritance - Object creation and manipulation - Execution flow and context - Function declarations and expressions - Variable scope and closures - Higher-order functions - Modules and decorators - Arrow functions - Prototypal inheritance |
| Topic 7: Debugging and Error Handling | 7% | - Breakpoints and code inspection - Console methods for debugging - Custom error types - Error handling techniques (try/catch/finally) |
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NEW QUESTION # 113
Given the code below:
What is logged to the console'
Answer: A
NEW QUESTION # 114
A developer needs to test this function:
01 const sum3 = (arr) => (
02 if (!arr.length) return 0,
03 if (arr.length === 1) return arr[0],
04 if (arr.length === 2) return arr[0] + arr[1],
05 return arr[0] + arr[1] + arr[2],
06 );
Which two assert statements are valid tests for the function?
Choose 2 answers
Answer: A,B
NEW QUESTION # 115
Refer to the code below:
<html lang="en">
<tableonclick="console.log(Table log');">
<tr id="row1">
<td>Click me!</td>
</tr>
<table>
<script>
functionprintMessage(event) {
console.log('Row log');
}
Let elem = document.getElementById('row1');
elem.addEventListener('click', printMessage, false);
</script>
</html>
Which code change should be made for the console to log only Row log when 'Click me! ' is clicked?
Answer: C
NEW QUESTION # 116
Which statement accurately describes an aspect of promises?
Answer: C
NEW QUESTION # 117
Given the following code:
is the output of line 02?
Answer: D
NEW QUESTION # 118
......
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