JavaScript Essentials for SAP ABAP Developers A Guide to Mobile and Desktop Application Development
Easily master JavaScript (JS) with this quick guide and develop mobile and desktop applications for SAP Fiori. The book equips ABAP/SAP developers with the essential topics to get started with JS. The focus of JavaScript Essentials for SAP ABAP Developers is on the parts of the JS language that are...
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| Format: | E-Book |
| Sprache: | Englisch |
| Veröffentlicht: |
Berkeley, CA
Apress L. P
2017
Apress |
| Ausgabe: | 1 |
| Schlagworte: | |
| ISBN: | 9781484222195, 1484222199, 9781484222201, 1484222202 |
| Online-Zugang: | Volltext |
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Inhaltsangabe:
- while Loop -- do...while Loop -- for Loop -- for...in Loop -- Label Statement -- Summary -- Chapter 5: Regular Expressions and String Methods -- Regular Expressions: An Overview -- String Methods -- search Method -- replace Method -- match Method -- split Method -- Regular Expression Object -- Regular Expression Object Properties -- constructor Property -- global Property -- ignoreCase Property -- lastIndex Property -- multiline Property -- source Property -- Regular Expression Object Methods -- exec Method -- test Method -- toString Method -- Summary -- Chapter 6: Functions -- Functions: An Overview -- Declaring Functions -- Using a Function Expression -- Self-Invoking Functions -- Named Function Expression -- Anonymous Function -- Using a Function Declaration -- Summary Comparison of the Function Declaration and Function Expression -- Function Parameters and Arguments -- Missing Parameters and the undefined Value -- arguments Array -- Simulating Optional Parameter Passing -- return Statement -- Function Call -- Parameter Pass by Value or Pass by Reference? -- Function Naming -- Summary -- Chapter 7: Doing More with Functions -- Hoisting in the Context of Functions -- First-Class Citizens -- Nested Functions -- Lexical Scoping -- Closures -- Recursive Functions -- Summary -- Chapter 8: Object-Oriented Programming in JavaScript -- Object-Oriented Programming in General -- Object Instances and Constructors -- Approach 1: Using an Object Literal -- Approach 2: Using a Constructor Function -- Approach 3: Using the Object() Constructor -- Approach 4: Using the create() Method -- JavaScript: A Prototype-Based Language -- Prototypal Inheritance -- Summary -- Chapter 9: Objects -- Array -- Properties of Array Object -- Property constructor -- Property length -- Array Methods -- Method concat -- Method pop -- Boolean -- Boolean Properties -- Boolean Methods
- Method valueOf -- String -- String Properties -- Property length -- String Methods -- Method charAt -- Method repeat -- Method slice -- Date -- Date Properties -- Property constructor -- Date Methods -- Using Property prototype with Method getDay() -- Method setMonth -- Summary -- Chapter 10: JavaScript Object Notation (JSON) -- JSON: An Overview -- JSON Data Types -- JSON Objects -- JSON Arrays -- JSON parse Method -- JSON stringify Method -- Summary -- Chapter 11: Miscellaneous Topics -- Strict Mode -- Debugging JavaScript -- Code Formatting Tips -- Use a Semicolon at the End of Each Statement -- Usage of Blanks -- Usage of Comparison Operators -- Function Curly Brackets -- Correctly Formatted Code Example -- Naming Convention for Variables -- Runtime Error and Exception Handling -- Best Practices in JavaScript -- Avoid Use of Global Variables -- Never Declare Objects for Numbers, Strings, or Booleans -- Use of default Clause in switch Statements -- Assigning Default Values in Parameter -- Use === Comparison -- Avoid Usage of Closures -- Summary -- Index
- Intro -- Contents at a Glance -- Contents -- About the Author -- About the Technical Reviewer -- Acknowledgments -- Introduction -- Chapter 1: Introduction to JavaScript -- Brief JavaScript Background -- Inside a JavaScript Program -- Creating a Simple JS Program -- A Quick Look at HTML -- Putting JavaScript in HTML Code -- Writing JS Code Within the < -- HEAD> -- and < -- /HEAD> -- Tags -- Writing JS Code Within the < -- BODY> -- and < -- /BODY> -- Tags -- Creating JS Code in a Separate File -- Variable Declaration in JavaScript -- Using Eclipse -- Summary -- Chapter 2: A Step Ahead in JavaScript -- Window Object -- Data Types in JavaScript -- String -- Number -- Undefined -- Null -- Object -- Objects Within Objects -- Boolean -- The typeof Operator -- Method console.log -- Taking Input from the User -- Commonly Used Keywords in JavaScript -- Summary -- Chapter 3: Operators in JavaScript -- Arithmetic Operators -- Addition Operator -- Subtraction Operator -- Multiplication Operator -- Division Operator -- Remainder Operator -- Exponentiation Operator -- Increment Operator -- Decrement Operator -- Unary Negation Operator -- Comparison Operators -- Greater Than Operator -- Less Than Operator -- Greater Than or Equal To Operator -- Less Than or Equal To Operator -- Equality and Inequality Operators -- Equality Operator -- Inequality Operator -- Strict Equality (Identity) Operator -- Non-identity/Strict Inequality Operator -- Logical Operators -- Bitwise Operators -- Bitwise AND -- Bitwise OR -- Bitwise XOR -- Bitwise NOT -- Bitwise Left Shift -- Bitwise Unsigned Right Shift -- Bitwise Signed Right Shift -- Coding Example -- Assignment Operators -- String Operator -- Summary -- Chapter 4: Control Structures in JavaScript -- Block Statement -- Conditional Statements -- if...else Statement -- switch Statement -- Loops in JavaScript