最實用的JavaScript-Developer-I認證考試的參考資料

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Salesforce JavaScript-Developer-I Exam Syllabus Topics:

Section	Weight	Objectives
Objects, Functions, and Classes	25%	- Class syntax, inheritance, and prototypes - Closures and execution context - Modules and imports/exports - Function definitions, parameters, and scope - Decorators and advanced function patterns - Object creation, properties, and methods
Browsers and Events	17%	- Script loading and execution order - Document Object Model (DOM) manipulation - Window and document object properties - Browser APIs and Web Storage - Event handling, propagation, and delegation
Testing	7%	- Testing frameworks and assertions - Test doubles and mocks - Code coverage and best practices - Unit testing concepts
Variables, Types, and Collections	23%	- Variable declaration and initialization - Array methods and data manipulation - Type coercion and conversion rules - Working with strings, numbers, dates, and booleans - JSON parsing and usage - Truthy and falsy values
Server-Side JavaScript	8%	- Command-line tools and scripts - Core Node.js modules - Node.js fundamentals and runtime - Module system and require/import
Asynchronous Programming	13%	- Event loop and micro/macro tasks - Fetch API and HTTP requests - Async/await syntax - Callbacks and callback hell - Promises and chaining
Debugging and Error Handling	7%	- Console methods and logging - Defensive programming practices - Error types and exception handling - Debugging tools and breakpoints

>> 最新JavaScript-Developer-I題庫資源 <<

JavaScript-Developer-I考古題，JavaScript-Developer-I學習資料

Salesforce JavaScript-Developer-I 認證試題庫學習資料根據最新的知識點以及輔導資料進行整編，覆蓋面廣，蘊含了眾多最新的 Salesforce 考試知識點。如果你正在準備 JavaScript-Developer-I 考試並且像我一樣急需通過，那 JavaScript-Developer-I 認證試題剛好可以幫助你。因為完善的 JavaScript-Developer-I 學習資料資料覆蓋 Salesforce 考試所有知識點，減少你考試的時間成本和經濟成本，助你輕松通過考試

最新的 Salesforce Developer JavaScript-Developer-I 免費考試真題 (Q95-Q100):

問題 #95
Refer to the code below:

What is the value of result when the code executes?

A. 10-5
B. 5-5
C. 5-10
D. 10-10

答案：D

問題 #96
Given the HTML below:
< div >
< div id= " row-uc " > Universal Containers < /div >
< div id= " row-as " > Applied Shipping < /div >
< div id= " row-bt " > Burlington Textiles < /div >
< /div >
Which statement adds the priority-account CSS class to the Applied Shipping row?

A. document.querySelector( ' #row-as ' ).classes.push( ' priority-account ' );
B. document.querySelector( ' #row-as ' ).classList.add( ' priority-account ' );
C. document.getElementById( ' row-as ' ).addClass( ' priority-account ' );
D. document.querySelectorAll( ' #row-as ' ).classList.add( ' priority-account ' );

答案：B

解題說明：
* document.querySelector( ' #row-as ' ) returns the single element with id row-as.
* That element has a classList property with add, remove, etc.
Correct usage:
document.querySelector( ' #row-as ' ).classList.add( ' priority-account ' ); Why others are wrong:
* A: querySelectorAll returns a NodeList, not a single element, so it does not have a classList property.
* C: DOM elements do not have a classes array or push; they have classList.
* D: document.getElementById( ' row-as ' ) is fine to get the element, but there is no addClass method in standard DOM; that's a jQuery-style API, not vanilla JS.

問題 #97
Given the code below.

What is logged to the console?

A. 0
B. 1
C. 2
D. 3

答案：C

問題 #98
Refer to the code below:
Let foodMenu1 = ['pizza', 'burger', 'French fries'];
Let finalMenu = foodMenu1;
finalMenu.push('Garlic bread');
What is the value of foodMenu1 after the code executes?

A. [ 'Garlic bread' , 'pizza','Burger', 'French fires' ]
B. [ 'pizza','Burger', 'French fires', 'Garlic bread']
C. [ 'pizza','Burger', 'French fires']
D. [ 'Garlic bread']

答案：C

問題 #99
Given the JavaScript below:

Which code should replace the placeholder comment on line 05 to highlight accounts that match the search string'

A. 'none1 : "yellow'
B. 'yellow' : null
C. 'yellow : 'none'
D. null : 'yellow'

答案：C

問題 #100
......

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