**How to access JavaScript variable value from C?**<\/p>\n
Accessing JavaScript variable values from C can be achieved through a combination of JavaScript\u2019s `external` object and C functions. By utilizing this approach, the value of a JavaScript variable can be passed from the web page to a C function.<\/p>\n
Here is a step-by-step guide on how to access JavaScript variable values from C:<\/p>\n
1. **Define a JavaScript function:** Begin by creating a JavaScript function in the web page that will retrieve the value of the desired variable. For example, let’s assume we have a JavaScript variable called `myVariable` that we want to access from C.<\/p>\n
“`javascript
\nfunction getVariableValue(){
\n return myVariable;
\n}
\n“`<\/p>\n
2. **Expose the JavaScript function to C:** In order to access the JavaScript function from C, we need to use the `external` object. This object acts as a bridge between JavaScript and C.<\/p>\n
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