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Is it possible to find the memory address of a JavaScript variable? The JavaScript code is part of (embedded into) a normal application where JavaScript is used as a front end to C++ and does not run on the browser. The JavaScript implementation used is SpiderMonkey.
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Usually memory addresses are represented in hexadecimal. In c++ you can get the memory address of a variable by using the & operator, like: cout << &i << endl; The output of that cout is the memory address of the first byte of the variable i we just created.
When a variable is created in C, a memory address is assigned to the variable. The memory address is the location of where the variable is stored on the computer. When we assign a value to the variable, it is stored in this memory address.
Getting the memory addresses of variables is meaningless within Java, since the JVM is at liberty to implement objects and move them as it seems fit (your objects may/will move around during garbage collection etc.) Integer.
If it would be possible at all, it would be very dependent on the javascript engine. The more modern javascript engine compile their code using a just in time compiler and messing with their internal variables would be either bad for performance, or bad for stability.
If the engine allows it, why not make a function call interface to some native code to exchange the variable's values?
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