Download e-book for kindle: Microsoft Jscript .NET programming by Justin Rogers

By Justin Rogers

ISBN-10: 0672321483

ISBN-13: 9780672321481

This booklet presents a accomplished transition from JScript to the .NET Framework/platform together with insurance of JScript.NET (language), ASP.NET, and home windows kinds. The publication will speak about the language alterations to ease the developer into operating with the recent syntax. after which numerous chapters on ASP.NET will correlate the variations among the previous ASP programming version and the hot .NET programming version

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Microsoft Jscript .NET programming - download pdf or read online

This booklet presents a entire transition from JScript to the . internet Framework/platform together with insurance of JScript. web (language), ASP. web, and home windows types. The e-book will talk about the language adjustments to ease the developer into operating with the hot syntax. after which numerous chapters on ASP. internet will correlate the diversities among the previous ASP programming version and the recent .

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Because the declaration in the preceding example occurs in global code, it creates a global variable named UnknownVar of type Object. This doesn’t provide any performance benefits, and the variable isn’t strongly typed. To strongly type a variable, you use the syntax name:type (where name is the name of the variable and type is the variable type). The colon after name tells the compiler that you want to strongly type the variable. The following is an example of strongly typing several variables (notice that whitespace doesn’t matter to the compiler): 30 Chapter 3 Providing Initial Values for Variables You can initialize variables with default values.

Catch blocks (discussed in Chapter 8, “Exception Handling”) and handle the exceptions. It also means that in well-programmed code, several operations are saved for each variable operation. NET. All String variables, for instance, are stored as JScript strings and are converted to CLR strings as needed at runtime. This conversion is completed by some helper functions in the JScript namespace that are called whenever a complex conversion needs to be made. Array object is considered to be a CLR array.

NET, which can exist side-by-side with JScript arrays, offer both performance and flexibility, but never both at the same time. NET Arrays The first step in working with arrays is to declare the array. Let’s start by declaring a traditional JScript-style array: var _JScriptArray:Array = new Array(); The type of this array is Array, and the example creates a new instance of the Array class. Note that all the assignments in this example are valid, and that JScript-style arrays are not strongly typed.

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Microsoft Jscript .NET programming by Justin Rogers

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