This document defines constructor functions and functions that take typed values as arguments.
A conforming implementation of this Standard shall interpret characters in conformance with the Unicode Standard, Version 3. If the adopted encoding form is not otherwise specified, it presumed to be the UTF encoding form. A conforming implementation of ECMAScript is permitted to provide additional types, values, objects, properties, and functions beyond those described in this specification.
In particular, a conforming implementation of ECMAScript is permitted to provide properties not described in this specification, and values for those properties, for objects that are described in this specification. A conforming implementation of ECMAScript is permitted to support program and regular expression syntax not described in this specification.
For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document including any amendments applies.
ECMAScript is an object-oriented programming language for performing computations and manipulating computational objects within a host environment.
ECMAScript as defined here is not intended to be computationally self-sufficient; indeed, there are no provisions in this specification for input of external data or output of computed results.
Instead, it is expected that the computational environment of an ECMAScript program will provide not only the objects and other facilities described in this specification but also certain environment-specific host objects, whose description and behaviour are beyond the scope of this specification except to indicate that they may provide certain properties that can be accessed and certain functions that can be called from an ECMAScript program.
A scripting language is a programming language that is used to manipulate, customise, and automate the facilities of an existing system. In such systems, useful functionality is already available through a user interface, and the scripting language is a mechanism for exposing that functionality to program control.
In this way, the existing system is said to provide a host environment of objects and facilities, which completes the capabilities of the scripting language. A scripting language is intended for use by both professional and non-professional programmers. ECMAScript was originally designed to be a Web scripting language, providing a mechanism to enliven Web pages in browsers and to perform server computation as part of a Web-based client-server architecture.
ECMAScript can provide core scripting capabilities for a variety of host environments, and therefore the core scripting language is specified in this document apart from any particular host environment.
Addison Wesley Publishing Co. Ungar, David, and Smith, Randall B. The Power of Simplicity. Further, the host environment provides a means to attach scripting code to events such as change of focus, page and image loading, unloading, error and abort, selection, form submission, and mouse actions.
Scripting code appears within the HTML and the displayed page is a combination of user interface elements and fixed and computed text and images.
The scripting code is reactive to user interaction and there is no need for a main program. A web server provides a different host environment for server-side computation including objects representing requests, clients, and files; and mechanisms to lock and share data.
By using browser-side and server-side scripting together, it is possible to distribute computation between the client and server while providing a customised user interface for a Web-based application. This overview is not part of the standard proper. An ECMAScript object is a collection of properties each with zero or more attributes that determine how each property can be used—for example, when the Writable attribute for a property is set to false, any attempt by executed ECMAScript code to change the value of the property fails.
Properties are containers that hold other objects, primitive values, or functions. A primitive value is a member of one of the following built-in types: Undefined, Null, Boolean, Number, and String; an object is a member of the remaining built-in type Object; and a function is a callable object.
A function that is associated with an object via a property is a method. ECMAScript also defines a set of built-in operators.In Growing, Growing, Growing, students write equations for exponential functions and learn to recognize the patterns of exponential growth or decay from tables, graphs, and equations.
These experiences with different relationships give students opportunities to compare linear and nonlinear patterns and to compare nonlinear patterns with each other. Chapter 6 Exponential Functions and Sequences Lesson Exponential Growth Functions A function of the form y = a(1 + r)t, where a > 0 and r > 0, is an exponential growth function.
initial amount time growth factor rate of growth (in decimal form). a) Write an exponential function to represent the amount of caffeine remaining after drinking a cup of green tea. b) Estimate the amount of caffeine in a teenager’s body 3 hours after drinking a cup of green. Function overloading.
In general, the specifications named above do not support function overloading in the sense that functions that have multiple signatures with the same name and the same number of parameters are not supported.
Exponential Regression An exponential regression is the process of finding the equation of the exponential function that fits best for a set of data. As a result, we get an equation of the form y . Mathematics Curriculum ALGEBRA I • MODULE 5 Students interpret features of a graph in order to write an equation that can be used to model it and the function (including step functionsand absolute value functions), and exponential functions with domains in the integers.