考试代码：302 JavaScript 考试大纲

ITS认证考试考什么？考试内容？

ITS认证考试是分科目的，现在我们要看得就是Certiport给出的ITS考试代码：302 考试名称：JavaScript的大纲，如果你通过了这科考试之后，将会获得JavaScript的ITS证书

本ITS考试的考生将证明他们可以读懂，编写和调试JavaScript的代码。

JavaScript Operators, Methods, and Keywords

  1. Complete and debug code that uses assignment and arithmetic operators
    • Assignment, increment, decrement, addition, subtraction, division, multiplication, modulus, compound assignment operators (+=, -=, *=, /=, %=)
  2. Apply JavaScript best practices
    • Comments, indentation, naming conventions, noscript, constants, reserved keywords, debugger keyword, setting breakpoints, console.log
  3. Evaluate the use of internal and external scripts
    • When to use, how to use, and what happens when scripts are used at multiple levels
  4. Implement exception handling
    • try, catch, finally
  5. Complete and debug code that interacts with the Browser Object Model (BOM)
    • Displaying dialogs, determining screen size

Variables, Data Types, and Functions

  1. Declare and use variables of primitive data types
    • Number, Boolean, String, null, undefined, type of operator, type-checking functions, use strict, converting between data types (parseInt, parseFloat), formatting numbers, string operations, eval(), toFixed(), toLocaleString(), toPrecision(), single quote vs. double quote (nesting), initialization
  2. Declare and use arrays
    • Single-dimensional arrays; multi-dimensional arrays; iteration; initialization; defining, sorting, and searching an array; push, pop, shift, and unshift methods; length property; accessing an array element
  3. Complete and debug code that uses objects
    • Properties, methods, instantiation, Date object, retrieving date and time parts, localizing date format (MM/DD vs DD/MM), adding and subtracting dates
  4. Complete and debug code that uses built-in Math functions
    • random, round, abs, floor, ceil, min, max, pow, sqrt
  5. Complete and debug functions that accept parameters and return values
    • Reusable code, local vs. global scope, redefining variables, passing parameters, value vs. reference, return values

Decisions and Loops

  1. Evaluate expressions that use logical and comparison operators
    • !=, <, >, <=, >=, !, ==, &&, ||
  2. Complete and debug decision statements
    • Single alternative (if), dual alternative (if else), multiple alternative (switch), nested if
  3. Complete and debug loops
    • for, for in, while, do while, break, continue

Document Object Model

  1. Identify and construct the Document Object Model (DOM) tree
    • window, document, body, other HTML elements
  2. Identify and handle document, form, keyboard, and mouse events
    • onload, onfocus, onblur, onchange, onkeydown, onkeyup, onkeypress, onclick, onmouseover, onmouseout
  3. Complete and debug code that outputs to an HTML document
    • document.write, innerHTML, textContent
  4. Complete and debug code that locates, modifies, and adds HTML elements and attributes to documents
    • getElementByld, getElementsByTagName, getElementsByClassName, setAttribute, createElement
  5. Create events using event handlers and listeners
    • DOM events, HTML attribute event, addEventListener

HTML Forms

  1. Complete and debug code that retrieves form input and sets form field values
    • Retrieving form values; identifying the DOM path; getting values from different types of elements; prepopulating, masking, and updating values
  2. Complete and debug code that performs input validation
    • Case, string comparisons, Not-A-Number (NaN), not blank
  3. Describe the form submission process
    • onsubmit, POST vs. GET, potential targets for submission

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