Extract Method

When the Extract Method refactoring is invoked in the JavaScript context, WebStorm analyses the selected block of code and detects variables that are the input for the selected code fragment and the variable that is the output for it. The detected output variable is used as a return value for the extracted function.

• Example
• Extracting a function

function multiplication(a,b) {
                    c = a + b;
                    d = c * c;
                    return d;
}
                

function sum(a,b);
    return a + b;  

function multiplication(a,b) {
                    c = sum(a,b);
                    d = c * c;
                    return d;
}