需要从 js 文件中引用 Java 全局变量

Question

I simply need to refer to a variable from a Java class in my js file, but I am not able to do it. Here is what I have:

public class MyClass.java{
    public final static String JAVA_VARIABLE = "abc";
}

testJsp has script.js included

I need to declare the variable x, from the java file, something like below:

script.js :

function this_is_called(){
    //The below is not working
    var x = '<%=MyClass.JAVA_VARIABLE %>'; 
}

Is there some way in which I can refer to the variable declared in MyClass.java from script.js ?

Answer 1

In your test.jsp file you can assign your Java variable to a global JavaScript variable.

<script>var JAVA_VARIABLE = '<%=MyClass.JAVA_VARIABLE %>';</script>

Then access it in your script.js file

function this_is_called(){
    //The below is not working
    var x = JAVA_VARIABLE;
}

You just need to ensure the first step is before the script.js file is loaded.

Answer 2

Check this link where you can find answer to this question.

Passing java value to javascript function

Hope this must be Helpful!