By Francis Cheng, Jen deHaan, Robert L. Dixon, Shimul Rahim
The ActionScript 2.0 Language Reference for Macromedia Flash eight is a accomplished reference guide that describes the applying programming interface (API) for Macromedia Flash participant, the main pervasive consumer runtime surroundings on the earth. It contains worthwhile syntax and utilization details; distinctive descriptions of sessions, features, houses, and occasions; and copy-and-paste code samples for each aspect within the ActionScript language. The ActionScript 2.0 Language Reference for Macromedia Flash eight may help you: • how one can use particular APIs successfully and successfully • comprehend the diversity and diversity of performance ActionScript bargains • Repurpose Macromedia-tested code on your personal purposes strong improvement and layout instruments require thorough and authoritative technical suggestion and documentation. by way of Macromedia Flash, not anyone is extra authoritative than Macromedia improvement and writing groups. Now their reputable documentation is accessible to you in revealed ebook shape. As you're employed, maintain this consultant by means of your facet for prepared entry to precious info on utilizing Flash. we now have designed it in order that it is easy to annotate as you move.
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Additional resources for ActionScript 2.0 Language Reference for Macromedia Flash 8
Returns Boolean - A Boolean value. POSITIVE_INFINITY) ) // returns false The following example shows how you can use isNAN() to check whether a mathematical expression contains an error: var dividend:Number; var divisor:Number; divisor = 1; trace( isNaN(dividend/divisor) ); // output: true // The output is true because the variable dividend is undefined. // Do not use isNAN() to check for division by 0 because it will return false. POSITIVE_INFINITY). NEGATIVE_INFINITY). NaN property) 42 43 length function length(expression:String)length(variable) Deprecated since Flash Player 5.
Use the _xmouse and _ymouse properties to determine the current mouse position. • mouseDown The action is initiated when the left mouse button is pressed. • mouseUp The action is initiated when the left mouse button is released. • keyDown The action is initiated when a key is pressed. getCode() to retrieve information about the last key pressed. • keyUp The action is initiated when a key is released. getCode() method to retrieve information about the last key pressed. • data The action is initiated when data is received in a loadVariables() or loadMovie() action.
The presence of infinity or negative infinity indicates a mathematical error condition such as division by 0. 0; Flash Player 5 Parameters expression:Object - A Boolean value, variable, or other expression to be evaluated. Returns Boolean - A Boolean value. POSITIVE_INFINITY) //returns false isNaN function isNaN(expression:Object) : Boolean Evaluates the parameter and returns true if the value is NaN(not a number). This function is useful for checking whether a mathematical expression evaluates successfully to a number.
ActionScript 2.0 Language Reference for Macromedia Flash 8 by Francis Cheng, Jen deHaan, Robert L. Dixon, Shimul Rahim