辅助功能在 Javascript 中不起作用

Question

I want to use 2 helper functions for a function. Output is not showing any error but the output is showing the function syntax instead of return value

        function cuboidlwsidesSurfaceArea(length,width,height) {
            return 2*length*width
        }    
        function cuboidwhsidesSurfaceArea(length,width,height) {
            return cuboidlwsidesSurfaceArea(length,width,height) + 2*width*height
        }
        function cuboidsurfaceArea(length,width,height) {
            return cuboidwhsidesSurfaceArea(length,width,height) +2*length*height
        }
        document.write = cuboidsurfaceArea(10,5,20)
    </script>

Answer 1

document.write = cuboidsurfaceArea(10,5,20)

document.write is a function . Call it as such.

document.write(cuboidsurfaceArea(10,5,20));

If you want the value returned somewhere, assign it to a variable or return it from a function. Append it to a DOM element. You need to be specific about the use case if you want additional help on what to do with it.