By Kishori Sharan
Scripting in Java teaches you the way to exploit the Java Scripting API and JavaScript to execute scripts and benefit from the good points of a scripting language whereas constructing Java functions. The ebook additionally covers issues that permit scripting languages to exploit Java positive aspects and the Java category library, together with the recent Java Collections and JavaFX eight APIs. many of the examples during this booklet use JavaScript at the Nashorn engine.
Author Kishori Sharan will express you scripts in JavaScript to illustrate its strength and use on your Java purposes. many of the examples use the jrunscript and jjs command-line instruments. additionally, debugging is mentioned to equip you for events whilst or for those who come upon any matters with this type of Java scripting. After analyzing and utilizing this ebook, you've so much of what you must do scripting in Java.
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Extra info for Scripting in Java: Integrating with Groovy and JavaScript
Example text
We put in the setTimeout method, which will call the off1 function after a delay of 700 milliseconds. 4. We created the off1 function. This function runs two tests using if statements: First, it checks that the value of over_checker is set to “off,” and then it checks that the user's browser supports rollovers. If both of these tests return a value of true, then the function sets the Prod ucts image to the on position. We have been introduced to some new aspects of JavaScript in this script: • • The setTimeout method.
The first thing we want our event handler to do is to call our on function. To call a function you simply call its name and enclose any values you wish to pass along to the function in parentheses separated by commas. on('Products'); The preceding statement will call the on function and pass it the value Products; again, we are passing it Products because that is the name of the image that we want our function to affect. Another common addition to rollovers is the displaying of a relevant phrase in the browser's status bar.
Therefore, when the user rolls over one of the other categories, both that graphic and the graphic for the section that the user is currently in will be highlighted. This could lead to some confusion on the part of the user, so what we need to do is turn off the graphic of the section we are currently in while the user rolls over one of the other categories. To do this we are going to have to make slight modifications to both the on and the off functions, as well as create a new function, off1, that will handle some of the extra functionality we are going to need.