1D0-735 Verified 2026 Edition

CIW JavaScript Specialist Practice Test

CIW JavaScript Specialist (1D0-735) is a specialist certification for web developers who already have HTML experience. It follows the earlier 1D0-635 exam and tests essential and intermediate JavaScript, applied scripting and technology extensions. The practice test works through variables, functions, events and the Document Object Model. CIW has introduced 1D0-835 as a newer v3 version of this exam.

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Exam Information

Official specifications published by CIW

Exam Format

90 min
55
70.91%
Specialist

Registration

$175 USD
CTC Online (academic testing centers), Certiverse/Rosalyn.ai (remote proctoring), or online proctoring

Validity

3 years (effective October 1, 2024)
Retake the same exam (1D0-735 or current version); If the exam has been retired, take the newer version of the program

1D0-735 Exam Topics and Domains

1D0-735 is organized into 4 weighted domains.

1

Essential JavaScript Principles and Practices

25%

Identify characteristics of JavaScript and common programming practices

List key JavaScript characteristics, including object-based nature, events, platform-independence, and differences between scripting languages and programming languagesIdentify common programming concepts, including objects, properties and methodsDescribe various JavaScript versions and flavors, including ECMA standards, JScript and similarities with proprietary scripting languagesDistinguish between server-side and client-side JavaScript applications, including JavaScript interpreters and rendering enginesDescribe acceptable coding practices, including appropriate use of comment tags and the <noscript> tagExamine the evolution of the role of JavaScript in simple Web page design, such as gaming, virtual reality (VR), native development, mobile device scripting and backend development
  • List key JavaScript characteristics including object-based nature, events, and platform independence
  • Identify common programming concepts including objects, properties, and methods
  • Describe JavaScript versions, ECMA standards, and proprietary scripting languages
  • Distinguish between server-side and client-side JavaScript applications
  • Describe acceptable coding practices including comments and the noscript tag
  • Examine the evolution of JavaScript in gaming, VR, native and backend development

Work with variables and data in JavaScript

Use attributes and methods to communicate with users, including the type attributeDefine variables, data types and scopeList keywords and reserved wordsStore user input in variables and evaluate for appropriate responses using the console and built-in methods such as alert() and prompt()Distinguish between concatenation and additionApply operators, including string concatenation (+=), strict comparison (===, !==), mathematical precedence and bitwise operatorsDemonstrate how to use expressionsImplement simple event handlers, including keyboard, mouse and mobile (gestures or touch) events
  • Use attributes and methods to communicate with users
  • Define variables, data types, and scope
  • List JavaScript keywords and reserved words
  • Store user input in variables using alert(), prompt(), and console methods
  • Distinguish between string concatenation and numeric addition
  • Apply operators including strict comparison, mathematical precedence, and bitwise operators
  • Demonstrate the use of JavaScript expressions
  • Implement simple event handlers for keyboard, mouse, and mobile events

Use JavaScript functions, methods, and events

Define and use methods as functionsDemonstrate the use of various types of functions and function elements including prototype functions, anonymous functions, closure functions, arguments and the use of return valuesDistinguish between global and local variablesUse the conditional operatorIdentify user events and event handlersDemonstrate the use of function specific methods including calling, binding and applyingUse built-in functions and cast variables
  • Define and use methods as functions
  • Use prototype, anonymous, and closure functions with arguments and return values
  • Distinguish between global and local variables
  • Use the conditional (ternary) operator
  • Identify user events and event handlers
  • Use call(), apply(), and bind() function methods
  • Use built-in functions and cast variables between types
2

Intermediate JavaScript Programming Techniques

35%

Debug and troubleshoot JavaScript code

Demonstrate common steps for debugging JavaScript code, including reviewing code and testing code in different browsers and various devicesDemonstrate how to use various native and supplemental debugging tools, including enabling/disabling display
  • Demonstrate common debugging steps including cross-browser testing
  • Use native and supplemental debugging tools effectively

Use JavaScript statements to control program flow

Use the if...else statementUse the while statementUse the do...while statementUse the for statementUse the forEach statementUse the break and continue statementsUse the switch statement
  • Use if...else statements for conditional logic
  • Use while and do...while loops
  • Use for loops and forEach for iteration
  • Use break and continue to control loop execution
  • Use switch statements for multi-way branching

Use the JavaScript Document Object Model (DOM)

Use JavaScript to manipulate the Document Object Model (DOM)Use the window object of the DOMManipulate properties and methods of the document object within the DOMUse the image object of the DOM, including image rollover creationUse the history object of the DOMEvaluate and change URL information with the location object of the DOMUse the navigator object of the DOMDescribe virtual DOM
  • Manipulate the DOM using JavaScript
  • Use the window object and its methods
  • Manipulate document object properties and methods
  • Create image rollovers using the image object
  • Navigate browser history with the history object
  • Evaluate and modify URLs with the location object
  • Detect browser capabilities with the navigator object
  • Understand the concept of the virtual DOM

Use JavaScript language objects and create expressions

Use the String object to test user inputEvaluate strings, including use of the length property, and use of the indexOf(), lastIndexOf(), substring() and charAt() methodsImplement basic regular expressions and the RegExp objectUse the Array object to create more efficient codeUse the map methodApply the Date and Math objects
  • Use the String object to test and validate user input
  • Evaluate strings using length, indexOf, lastIndexOf, substring, and charAt
  • Implement basic regular expressions with the RegExp object
  • Use the Array object and its methods efficiently
  • Use the map method for array transformation
  • Apply the Date and Math objects for time and mathematical operations

Create and use custom JavaScript objects

Create a custom JavaScript objectDefine properties and methods of custom objectsCreate new object instancesCreate client-side arrays using custom objectsCreate functions and methods for manipulating client-side arraysUse the prototype property, concept of classes, constructors, iterators and generators
  • Create custom JavaScript objects
  • Define properties and methods of custom objects
  • Create new object instances using constructors
  • Create and manage client-side arrays of custom objects
  • Create functions for manipulating arrays of objects
  • Use prototypes, classes, constructors, iterators, and generators
3

Applied JavaScript

21%

Modify HTML with JavaScript

Identify steps and methods for changing HTML on the fly, including the getElementById, getElementsByName, getElementsByTagName and getElementsByClassName methods of the DOMModify form object values
  • Use DOM methods to access and modify HTML elements dynamically
  • Modify form object values using JavaScript

Use JavaScript to develop interactive forms

Identify and use form controls, including HTML5 form elementsDefine the form objectRefer to form objects, including input, text, textarea, radio, checkbox, select, button, password, hidden, file, and submitUse form objects, including radio, select, button, text, input, textarea, checkbox, password, hidden, file and submitConduct form validationIdentify common form security issues
  • Identify and use HTML5 form controls
  • Define and access the form object
  • Reference all form element types
  • Use and manipulate all form element types
  • Conduct comprehensive form validation
  • Identify common form security issues

Address JavaScript security issues involving browsers and cookies

Distinguish between the browser and the operating system in relation to the elements responsible for securityDiscuss browser security issues relevant to JavaScript, including script blocking, frame-to-frame URL changing, and document.write behavior differences among browsersDefine signed scriptsPerform client-side browser detection and determine browser compatibilityIdentify common issues and procedures for creating secure JavaScript codeDefine cross-site scripting and the associated security risksDefine the functions and common uses of cookiesManipulate cookies effectively, including testing for presence of cookies, clearing cookies, enabling/disabling cookies in the browser, and deleting cookies from your hard driveDiscuss ethics in collecting, storing, using and protecting user data
  • Distinguish browser and OS security responsibilities
  • Discuss browser-specific JavaScript security issues
  • Define signed scripts and their purpose
  • Perform browser detection and determine compatibility
  • Identify procedures for creating secure JavaScript code
  • Define cross-site scripting (XSS) and prevention methods
  • Define cookie functions and common uses
  • Manipulate cookies including creating, reading, and deleting
  • Discuss ethics in collecting, storing, and protecting user data
4

JavaScript Technology Extensions

19%

Implement JavaScript libraries and frameworks

Identify and evaluate the benefits and drawbacks of using predefined libraries and frameworks, such as jQuery, Spry, Dojo, React.js, Angular.js and PrototypeIdentify steps for using libraries (such as jQuery), frameworks and available plug-ins, including optimization for faster JavaScript manipulationIdentify steps for loading and referencing external scripts and pre-made external scriptsIdentify and evaluate the benefits and drawbacks of Server-side JavaScript technologiesOptimize page load time and user experience on various devices
  • Evaluate benefits and drawbacks of JavaScript libraries and frameworks
  • Use libraries like jQuery and install plug-ins
  • Load and reference external scripts properly
  • Evaluate server-side JavaScript technologies
  • Optimize page load time and user experience across devices

Use JavaScript and AJAX to create interactive Web applications

Define synchronous and asynchronous, fundamental AJAX elements, and proceduresExplain the Fetch API, Promises and callback functionsUse the XMLHttpRequest object to retrieve dataDescribe typical AJAX-based requestsIdentify key server response issues related to AJAX-based requestsUse JavaScript to communicate with databasesIdentify and compare XML and JSON
  • Define synchronous vs asynchronous and AJAX fundamentals
  • Explain the Fetch API, Promises, and callback functions
  • Use XMLHttpRequest to retrieve data
  • Describe typical AJAX-based requests
  • Identify server response issues with AJAX requests
  • Use JavaScript to communicate with databases
  • Compare XML and JSON data formats

Implementing Web APIs

Define Web API (Application Programming Interface) and benefitsIdentify and use Web APIs, including session storage, local storage, and GEO locationIdentify and use the Canvas API
  • Define Web APIs and their benefits
  • Use Web Storage API (localStorage and sessionStorage)
  • Use the Geolocation API
  • Use the Canvas API for drawing and animation

How do I earn this certification?

Passing 1D0-735 earns the CIW JavaScript Specialist certification. It sits in the Web Development track.

Current Level Exams
  • 1D0-541 - CIW Database Design Specialist Required alongside JavaScript Specialist for CIW Web Development Professional
  • 1D0-720 - CIW Advanced HTML5 & CSS3 SpecialistRequired alongside JavaScript Specialist for CIW Web Development Professional
Next Level Options
CIW Web Development Professional This is the advanced certification earned by passing all three exams in the Web Development track
Alternative Paths

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The most effective way to prepare for 1D0-735 is by using the PlanetCert Simulator to practice questions and review detailed explanations.

What's changed on this exam?

Current Status
ACTIVE
Updates
  • JavaScript ES6+ Features
  • Web APIs (Storage, Geolocation, Canvas)
  • AJAX and Fetch API
  • JavaScript Libraries and Frameworks

Who should take this exam?

This exam is typically taken by Web developers and Software developers.

  • Familiarity with using the Internet
  • Experience developing Web pages
  • Experience configuring networks (consistent with CIW Web Foundations series)
  • Knowledge of HTML code development (required)

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